Journal articles: 'Electrospinning – Research'

1

Liu, Da Li, Chang Juan Jing, Yuan Yuan Liu, and Qing Xi Hu. "Algorithm Research of Pattern Recognition for Process Control of Electrospinning." Advanced Materials Research 314-316 (August 2011): 1987–90. http://dx.doi.org/10.4028/www.scientific.net/amr.314-316.1987.

Full text

Abstract:

Electrospinning is kind of unique craft to fabricate nanoscale fiber in the condition of high-voltage electric field. However, due to the nanoscale diameter manufacturing, it is a challenge to get the whole manufacturing process stable at certain level. For that sake, this paper figures out the monitor method for the electrospinning equipment, which solves the former matter as well as makes the fiber generating process in control. According to the method, CCD camera is put forward to make the detection of the Taylor cone image continuously, while pattern recognition algorithm is used to real-time monitor the shape and size of Taylor cone which indicate the stable process of electrospinning. In order to get the stable Taylor cone shape, the processing result is used as feedback signal for control system of the electrospinning equipment to coordinate the feeding module or power supply module. As a result, the problem of nonuniformity and uncontrollable about electrospinning has been solved effectively; what's more, experiments testify that this method is reliable and effective.

APA, Harvard, Vancouver, ISO, and other styles

2

Sun, Xiao Bin, D. Jia, Wei Min Kang, Bo Wen Cheng, and Ya Bin Li. "Research on Electrospinning Process of Pullulan Nanofibers." Applied Mechanics and Materials 268-270 (December 2012): 198–201. http://dx.doi.org/10.4028/www.scientific.net/amm.268-270.198.

Full text

Abstract:

A kind of pullulan biopolymer nanofibers with diameter of 100～700nm were obtained using redistilled water as solvent through electrospinning technology in this paper. The effects of the spinning solution concentration, applied voltage, flow rate and capillary–screen distance on morphology and diameter distribution of pullulan nanofiber were studied by SEM. The results show that, different parameters had great influence on nanofibers’ morphology and diameter. The optimal parameters of pullulan nanofibers electrospinning were: 22wt.% spinning solution concentration, 31 kV voltage, 20 cm capillary–screen distance and 0.5ml/h flow rate.

APA, Harvard, Vancouver, ISO, and other styles

3

Song, Qing Song, Yue Xing Liu, You Chen Zhang, and Yong Liu. "Research and Development in Electrospinning Theory and Technology." Materials Science Forum 815 (March 2015): 695–700. http://dx.doi.org/10.4028/www.scientific.net/msf.815.695.

Full text

Abstract:

Based on the analysis of much related literature, the present article introduced some of the latest theoretical models and technologies. Meanwhile, it sums up two important issues in electrospinning development. One is that more studies will focus on melt fiber refinement and improving position accuracy. Another is orderly collection and spinning efficiency will be emphasized. This study provides a clear direction for further development of electrospinning.

APA, Harvard, Vancouver, ISO, and other styles

4

Wei, Na, Cheng Sun, Jing Wang, and Li Qiang Huang. "Research on Electrospinning of Cellulose Acetate Prepared by Acetone /DMAc Solvent." Applied Mechanics and Materials 469 (November 2013): 126–29. http://dx.doi.org/10.4028/www.scientific.net/amm.469.126.

Full text

Abstract:

Electrospinning is a technique that can be used to produce nanofibres from a polymeric solution or melt under the influence of a high electrostatic field [. In this paper, we used Acetone/N, N-Dimethyl acetamide (DMAc) and Acetic acid as the solvent, to explore the influencing factors of using electrospinning to prepare the nanofiber of cellulose acetate, and studied on how solvent, voltage and viscosity impact on the morphology and diameter of nanofiber. The results of the study show that: Acetone/DMAc as solvent, when the solvent ratio is 3:1, the spinning of the concentration is 4%～6%, the viscosity is 7.1～8.3 Poise, the voltage is 15kV, and deposition distance is 12cm, we could obtain the gelatin nanofibers with the diameter of 200-300 nanometer prepared by electrospinning. This study provided the theoretical basis for cellulose acetate prepared by electrospinning in antimicrobial food packaging materials development.

APA, Harvard, Vancouver, ISO, and other styles

5

Zhang, Yan, Chuan-Zheng Zhang, Fu-Juan Liu, Fei-Yan Wang, and Ping Wang. "Research on morphologies of polyvinyl alcohol/milk nanofibers." Thermal Science 20, no. 3 (2016): 961–66. http://dx.doi.org/10.2298/tsci1603961z.

Full text

Abstract:

In this paper, the surface morphologies of polyvinyl alcohol/milk nanofibers produced via electrospinning technique were investigated. The electrospinning process was performed at various processing parameters (flow rate, applied voltage) and different polyvinyl acetate to milk ratios (100/0, 90/10, 80/20, 70/30, and 60/40). The scanning electron microscopy and Image J software were used to characterize the surface morphologies, especially the diameter distribution of electro spun nanofibers. The results of scanning electron microscopy show that the diameter of polyvinyl acetate/milk nanofibers increases with the increase of the spinning speed and spinning voltage but decreases with the increase of the weight percentage of milk in the spinning solution. The potential applications of this bicomponent nanofibers are numerous and diverse. The research results in present paper can contribute to better control of the electrospinning process and thus expanding the applicabilities, such as dressings for wound healing in sports.

APA, Harvard, Vancouver, ISO, and other styles

6

Wang, Han, Shenneng Huang, Feng Liang, Peixuan Wu, Minhao Li, Sen Lin, and Xindu Chen. "Research on Multinozzle Near-Field Electrospinning Patterned Deposition." Journal of Nanomaterials 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/529138.

Full text

Abstract:

Multinozzle electrospinning systems are designed to increase productivity, while near-field electrospinning (NFES) systems are designed to deposit solid nanofibers in a direct, continuous, and controllable manner. In this paper, several multinozzle NFES setups are tested. The experiment reveals that the deposition distance becomes larger when working distance and needle spacing increase, and the influence of voltage is relatively weaker. The deposition of double nozzle NFES has been studied with Coulomb’s law and theoretical derivation has been verified by the experimental conclusion. The experiment result and theoretical derivation are helpful to get different distance of direct-written fibers by adjusting working distance or needle spacing to change distance of fibers largely and adjusting voltage to change distance slowly. Through these efforts, it is convenient to adjust the distance of straight fibers in multinozzle system.

APA, Harvard, Vancouver, ISO, and other styles

7

Mele, Elisa. "Electrospinning of Essential Oils." Polymers 12, no. 4 (April 14, 2020): 908. http://dx.doi.org/10.3390/polym12040908.

Full text

Abstract:

The extensive and sometimes unregulated use of synthetic chemicals, such as drugs, preservatives, and pesticides, is posing big threats to global health, the environment, and food security. This has stimulated the research of new strategies to deal with bacterial infections in animals and humans and to eradicate pests. Plant extracts, particularly essential oils, have recently emerged as valid alternatives to synthetic drugs, due to their properties which include antibacterial, antifungal, anti-inflammatory, antioxidant, and insecticidal activity. This review discusses the current research on the use of electrospinning to encapsulate essential oils into polymeric nanofibres and achieve controlled release of these bioactive compounds, while protecting them from degradation. The works here analysed demonstrate that the electrospinning process is an effective strategy to preserve the properties of essential oils and create bioactive membranes for biomedical, pharmaceutical, and food packaging applications.

APA, Harvard, Vancouver, ISO, and other styles

8

Krucińska, Izabella, Maciej Boguń, Olga Chrzanowska, Michał Chrzanowski, and Paulina Król. "Research concerning fabrication of fibrous osteoconductive plga/hap nanocomposite material using the method of electrospinning from polymer solution." Autex Research Journal 13, no. 3 (September 30, 2013): 57–66. http://dx.doi.org/10.2478/v10304-012-0027-3.

Full text

Abstract:

Abstract The aim of the work was to obtain nano fibrous structures from biodegradable polymer with the addition of hydroxyapatite using electrospinning technique. Research was conducted with two types of solvent: dichloromethane and 50:50 mixture of dimethyl sulfoxide and dichloromethane. As a polymer a copolymer of L-lactide and glycolide (PLGA), commercial product with trade name Resomer®LG 824, was used. The preliminary electrospinning tests enabled to match optimal polymer solution concentration of tested samples. Rheological properties of all tested polymer solutions has been determined. Influence of electrospinning conditions and the type of solvent on macroscopic structure has been investigated.

APA, Harvard, Vancouver, ISO, and other styles

9

Liu, Yuan Yuan, Qing Wei Li, Qing Xi Hu, Chang Juan Jing, and Qiang Gao Wang. "The Research on Macro Charged Jet Phenomenon and its Orderly Collection." Applied Mechanics and Materials 121-126 (October 2011): 1156–59. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.1156.

Full text

Abstract:

Macro charged jet molding combines with Rapid Prototyping and electrospinning together, it solved the problem of insufficient forming precision with RP molding and the difficulty of collection with electrospinning which caused by highly injection speed and small diameter. This article talks about Macro charged jet phenomena of PEO solution and its influence factors through experiment, detected diameter of the shoot fluid by using microscope, measured micro-injection speed by using the rotating disk with linear motion collection device, achieved orderly collection of Macro charged jet with different diameter and injection speed.

APA, Harvard, Vancouver, ISO, and other styles

10

Zhou, Gang, Guimin Zhang, Zhe Wu, Yongzhao Hou, Ming Yan, Haifeng Liu, Xufeng Niu, A. Ruhan, and Yubo Fan. "Research on the Structure of Fish Collagen Nanofibers Influenced Cell Growth." Journal of Nanomaterials 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/764239.

Full text

Abstract:

Electrospinning is highlighted in biomaterials field. The structures of nanofibers depend on various parameters, which are related closely to the bioactivity of biomaterials. The aim of this research is to analyze the structure of fish collagen nanofibers and to propose the new criterion for cell growth. This paper focused on the flow rate of solvent during the electrospinning. Through the cell culture, the relationship of the structure and cell growth is investigated. The results obtained in this study provide an understanding of the behaviors of cell growth under different structure of fish collagen nanofibers scaffold.

APA, Harvard, Vancouver, ISO, and other styles

11

Cheng, Ming Ming, Fei Wang, Lin Jing Ma, and Chao Fan. "Research Progress on Preparation Methods of Nanofibers." Advanced Materials Research 549 (July 2012): 543–47. http://dx.doi.org/10.4028/www.scientific.net/amr.549.543.

Full text

Abstract:

Research progress of preparation methods of nanofibers was briefly reviewed and discussed based on the classification of two component composite method, template synthesis method, polymer limited domain synthesis method, and electrospinning method. Research orientations related to preparation methods of nanofibers were also proposed.

APA, Harvard, Vancouver, ISO, and other styles

12

Xu, Lan. "A particle suspension model for nanosuspensions electrospinning." Thermal Science 22, no. 4 (2018): 1707–14. http://dx.doi.org/10.2298/tsci1804707x.

Full text

Abstract:

Polymeric composite nanofibers have been fabricated simply by the electrospinning of polymeric solutions containing a wide variety of suspended inclusions such as nanoparticles and nanotubes. The electrospinning process for fabrication of composite nanofibers is a multi-phase and multi-physics process. In this paper, a modified particle suspension model for electrospinning nanosuspensions is established to research the electrospinning process. The model can offer in-depth insight into physical understanding of the complex process which can not be fully explained experimentally.

APA, Harvard, Vancouver, ISO, and other styles

13

Nayak, Rajkishore, Ilias Louis Kyratzis, Yen Bach Truong, Rajiv Padhye, Lyndon Arnold, Gary Peeters, Lance Nichols, and Mike O'Shea. "Fabrication and Characterisation of Nanofibres by Meltblowing and Melt Electrospinning." Advanced Materials Research 472-475 (February 2012): 1294–99. http://dx.doi.org/10.4028/www.scientific.net/amr.472-475.1294.

Full text

Abstract:

Fabrication of nanofibres has become a growing area of research because of their unique properties (i.e. smaller fibre diameter and higher surface area) and potential applications in various fields such as filtration, composites and biomedical applications. Although several processes exist for fabrication of nanofibres, electrospinning is considered to be the simplest. Most of the research in electrospinning is based on solution rather than melt. The feasibility of fabricating nanofibres of polypropylene (PP) by meltblowing and melt electrospinning has been investigated in this paper. In meltblowing different fluids such as air and water were fed at different inlets along the extrusion barrel for the fabrication of nanofibres whereas in melt electrospinning it was achieved by using different additives. The results obtained by using water in meltblowing were better with respect to the morphology and fibre uniformity compared to air. In melt electrospinning although all the additives (i.e. sodium oleate (SO), polyethylene glycol (PEG) and polydimethyl siloxane (PDMS)) helped in reducing the fibre diameter, only SO was effective to reduce the diameter down to nanoscale. It was concluded that both the solvent-free processes have the potential to substantially increase the production of nanofibres compared to solution electrospinning.

APA, Harvard, Vancouver, ISO, and other styles

14

WU, JEN-CHIEH, and H. PETER LORENZ. "ELECTROSPINNING OF BIOMATERIALS AND THEIR APPLICATIONS IN TISSUE ENGINEERING." Nano LIFE 02, no. 04 (December 2012): 1230010. http://dx.doi.org/10.1142/s1793984412300105.

Full text

Abstract:

Electrospinning is a process for generating micrometer or nanometer scale polymer fibers with large surface areas and high porosity. For tissue engineering research, the electrospinning technique provides a quick way to fabricate fibrous scaffolds with dimensions comparable to the extracellular matrix (ECM). A variety of materials can be used in the electrospinning process, including natural biomaterials as well as synthetic polymers. The natural biomaterials have advantages such as excellent biocompatibility and biodegradability, which can be more suitable for making biomimic scaffolds. In the last two decades, there have been growing numbers of studies of biomaterial fibrous scaffolds using the electrospinning process. In this review, we will discuss biomaterials in the electrospinning process and their applications in tissue engineering.

APA, Harvard, Vancouver, ISO, and other styles

15

Gong, He, Cai Dong She, Jian Li, and Shi Jun Li. "The Research for Electrostatic Spinning Parameters Control System at High Voltage." Applied Mechanics and Materials 263-266 (December 2012): 776–80. http://dx.doi.org/10.4028/www.scientific.net/amm.263-266.776.

Full text

Abstract:

In electrospinning at high voltage, material temperature, the distance between needle and collecting plate and the situation on pushing on material within needle are factors affecting the spinning quality. The paper used the microcontroller as the core, adopted the stepping motor to regulate collecting plate position driving machinery, got feedback by the displacement sensor. During the spinning process, using the infrared temperature probe to measure the needle, meanwhile controlling miniature stepper motor to advance material within needle in constant speed driving piston. The experimental results show that the system has high control accuracy, temperature accuracy can achieve 0.1°C, spinning interval is 1cm and control accuracy is 0.05mm. It provides technical support for a comprehensive, in-depth a electrospinning research.

APA, Harvard, Vancouver, ISO, and other styles

16

Zhang, Zhi Ming, Ting Ting Li, and Ce Liu. "Preparation and Research of Polymolybdate/Polymer Composite Membrane by Electrospinning and its Photo-Catalytic Property." Applied Mechanics and Materials 395-396 (September 2013): 415–18. http://dx.doi.org/10.4028/www.scientific.net/amm.395-396.415.

Full text

Abstract:

Composite cellulosic membrane of PMMA and phosphomolybdic acid was prepared by electrospinning. During the progress, the factor of electrospinning and the optimum parameters was found out within the orthogonal combination experiment program. Then the morphology of the composite cellulosic membrane was observed by polarizing microscopy. To resolve PMMA, DMF and anhydrous alcohol were used. When their ratios were 1:1, the diameter of the fibre was the most homogeneous. During the electrospinning, the concentration of PMMA was the most important factor. When the concentrations were less then 10%, there were hardly fibres on the foil. The diameter of the fibre ranged from 0.5 to 1.2 μm along with the increment of the concentration of PMMA. The addition of phosphomolybdic acid made the diameter of the fibre decrease. IR-spectra showed that phosphomolybdic acid kept its Keggin structure, and it interacted with PMMA through hydrogen bond. The composite cellulosic membrane changed its color when imposed in bright space. UV spectra represented that the composite cellulosic membrane had a strong absorption peak at 700nm.

APA, Harvard, Vancouver, ISO, and other styles

17

Dou, Guan Xian, and Xiao Hong Qin. "Research on Water Resistance of Polyvinyl Alcohol Nanofiber Mats." Advanced Materials Research 175-176 (January 2011): 247–52. http://dx.doi.org/10.4028/www.scientific.net/amr.175-176.247.

Full text

Abstract:

In electrospinning, non-woven fabrics are commonly used as substrates to receive polymer nanofibers. Nanofiber mats formed in this process have many advantages, such as extensive application prospects in the thermal insulation, filtration, protection and so on. Polyvinyl alcohol (PVA) is the main electrospun material with excellent physical properties, biodegradable properties, chemical resistance, and good mechanical properties in the dry state. However, PVA has a poor water resistance which limits its application. In this study, The PVA nanofibrous mats prepared by electrospinning were chemically crosslinked with glutaraldehyde (GA) in acetone. Scanning Electron Micrograph (SEM) and Fourier Transform Infrared (FTIR) spectrometry were employed to characterize the morphology and structure of crosslinked PVA nanofiber mat and PVA nanofiber mat. The differences of morphology and structure between the modified and nonmodified nanofiber mat were revealed. Such nanofibrous mat has good water resistance and excellent warmth retention property. Thus, the practical applications of PVA nanofiber mats were broadened.

APA, Harvard, Vancouver, ISO, and other styles

18

Shahriar, S., Jagannath Mondal, Mohammad Hasan, Vishnu Revuri, Dong Lee, and Yong-Kyu Lee. "Electrospinning Nanofibers for Therapeutics Delivery." Nanomaterials 9, no. 4 (April 3, 2019): 532. http://dx.doi.org/10.3390/nano9040532.

Full text

Abstract:

The limitations of conventional therapeutic drugs necessitate the importance of developing novel therapeutics to treat diverse diseases. Conventional drugs have poor blood circulation time and are not stable or compatible with the biological system. Nanomaterials, with their exceptional structural properties, have gained significance as promising materials for the development of novel therapeutics. Nanofibers with unique physiochemical and biological properties have gained significant attention in the field of health care and biomedical research. The choice of a wide variety of materials for nanofiber fabrication, along with the release of therapeutic payload in sustained and controlled release patterns, make nanofibers an ideal material for drug delivery research. Electrospinning is the conventional method for fabricating nanofibers with different morphologies and is often used for the mass production of nanofibers. This review highlights the recent advancements in the use of nanofibers for the delivery of therapeutic drugs, nucleic acids and growth factors. A detailed mechanism for fabricating different types of nanofiber produced from electrospinning, and factors influencing nanofiber generation, are discussed. The insights from this review can provide a thorough understanding of the precise selection of materials used for fabricating nanofibers for specific therapeutic applications and also the importance of nanofibers for drug delivery applications.

APA, Harvard, Vancouver, ISO, and other styles

19

Li, Qingshan, Longlong Guan, Wei Hong, Jun Liu, and Guangzhong Xing. "Preparation and Research of Electrospinning Chitosan Nanofiber Sustained-Release Carrier." Integrated Ferroelectrics 144, no. 1 (January 2013): 48–55. http://dx.doi.org/10.1080/10584587.2013.787235.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Liu, Feng, Qifang Lu, Xiuling Jiao, and Dairong Chen. "Fabrication of nylon-6/POMs nanofibrous membranes and the degradation of mustard stimulant research." RSC Adv. 4, no. 78 (2014): 41271–76. http://dx.doi.org/10.1039/c4ra06800a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Lou, Ching Wen, Chien Lin Huang, Jin Jia Hu, Chao Tsang Lu, Zong Han Wu, and Jia Horng Lin. "Fiber Formation of the Biocompatible Polymer Nanofiber Membrane by Electrospinning." Advanced Materials Research 557-559 (July 2012): 1888–92. http://dx.doi.org/10.4028/www.scientific.net/amr.557-559.1888.

Full text

Abstract:

Electrospinning has been attributed to be one of the most effective method to prepare nano-fibers, and widely applied in assorted fields. The nanofiber membranes made by electrospinning feature high porosity and surface area, and are qualified for vascular grafts, biological scaffolds, and wound dressings. Chitosan is non-toxic and biodegradable, making it a good biocompatible material; in addition, it is also proved to be anti-bacterial and help cell growth in wounds. This research produced nanofiber membrane with polyethylene oxide (PEO) by electrospinning; the influence of the three parameters —mixture ratio of solution, electric field, and distance between the capillary tip and the collecting plate, on electrospinning was then explored. According to the results of the experiment, electrospinning formed the optimum nanofibers when the volume mixing ratio of PEO/chitosan was 60:40.

APA, Harvard, Vancouver, ISO, and other styles

22

Maurmann, Natasha, Juliana Girón, Bruna Borstmann Jardim Leal, and Patricia Pranke. "3D electrospinning used in medical materials." International Journal of Advances in Medical Biotechnology - IJAMB 2, no. 1 (March 1, 2019): 27. http://dx.doi.org/10.25061/2595-3931/ijamb/2019.v2i1.26.

Full text

Abstract:

Electrospinning (ES) is an interesting and efficient technique for biomedical use. This is a method used for the fabrication of polymer fibers used in tissue engineering (TE). The electrospun nano- and microfibers biomaterial, called scaffolds, are also used for regenerative medicine. The aim of the present mini-review is to present methods used to fabricate 3D fibers by electrospinning and their applications in TE. Also, discussed here are issues regarding the electrospinning limitations and research challenges.

APA, Harvard, Vancouver, ISO, and other styles

23

Liu, Li, Jie Zhou, Xing Huang, and Chang Fa Xiao. "Preparation of Aligned Polysulfonamide Nanofibers by Magnetic Electrospinning." Advanced Materials Research 332-334 (September 2011): 363–66. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.363.

Full text

Abstract:

Preparation of uniaxially aligned nanofibers by electrospinning has been a new research hot spot in recent years. Well-aligned polysulfonamide (PSA) nanofibers with the diameter of 200nm were successfully prepared by magnetic electrospinning with the distance between the two magnets of 8cm. The key to the success of this method was the use of a collector composed of two permanent magnets to suffer an applied magnetic field. And the mechanism of magnetic electrospinning was also discussed in detail.

APA, Harvard, Vancouver, ISO, and other styles

24

McCarty and Giapis. "An Adaptable Device for Scalable Electrospinning of Low- and High-Viscosity Solutions." Instruments 3, no. 3 (August 7, 2019): 37. http://dx.doi.org/10.3390/instruments3030037.

Full text

Abstract:

This paper summarizes the design and construction of an adaptable electrospinner capable of spinning fluids over a large range of viscosities. The design accommodates needless electrospinning technologies and enables researchers to explore a large range of testing parameters. Modular parts can be exchanged for alternative versions that adapt to the research question at hand. A rotating drum electrode immersed halfway into a solution bath provides the liquid film surface from which electrospinning occurs. We tested and assessed several electrode designs and their electrospinning performance at higher (< 500 poise) viscosities. Relative humidity was found to affect the onset of electrospinning of highly viscous solutions. We demonstrate robust device performance at applied voltage up to 90 kV between the electrospinning electrode and the collector. Design and fabrication aspects are discussed in practical terms, with the intent of making this device reproducible in an academic student machine shop.

APA, Harvard, Vancouver, ISO, and other styles

25

IMANGAZY, A. M., and B. KAIDAR. "OBTAINING CARBON FIBERS BASED ON COAL TAR BY ELECTROSPINNING METHOD." Chemical Journal of Kazakhstan 73, no. 1 (March 14, 2021): 151–59. http://dx.doi.org/10.51580/2021-1/2710-1185.16.

Full text

Abstract:

This research discusses the use of coal-processing wastes of the Shubarkol Deposit (Karaganda region, Kazakhstan) to produce valuable materials such as carbon fibers. Annually «Shubarkol Komir» JSC alone produces up to 35,000 tons of coal tar as byproduct. In this experiment, mesophase pitch was obtained by coal tar heat treatment at 200 o C. By cracking mesophase pitch into the pieces with the addition of poly (methyl methacrylate) as fiber-forming material and 1,2-dichloroethane as solvent, the spinnable solution was prepared. The elemental analysis of the mesophase pitch showed that the heat treatment up to 200 o C does not contribute to the full elimination of sulfur containing components that influence the forming of mesophase. From the Raman spectra of the pitch, the D peak appearance at ~ 1370 cm-1 and G peak at ~ 1600 cm-1 responsible for carbon products. Carbon fibers with an average diameter of 2.5-3.3 μm were obtained by electrospinning technique in laboratory settings.

APA, Harvard, Vancouver, ISO, and other styles

26

Anindyajati, Adhi. "ELECTROSPUN BIOMATERIALS AND RELATED TECHNOLOGIES." Jurnal Teknosains 8, no. 2 (July 24, 2019): 168. http://dx.doi.org/10.22146/teknosains.46652.

Full text

Abstract:

Electrospun Biomaterials and Related Technologies is a multi-contributed book containing review articles from worldwide authors with industry and academic background. This book is aimed to deliver a compiled overview in biomaterials electrospinning, including strategies, relevant technologies, and state-of-the-art research. The editor, Jorge Almodovar, has chemical engineering background with extensive research experiences and focus on engineering of biomimetic materials. The book consists of nine chapters in 282 content pages. Arranged in a concise format, it delivers a comprehensive but not exhaustive reading text. The chapters cover broad range of topics in electrospinning field, including process reproducibility and robustness, fibrous collagen scaffold, cellulose-based biomaterials, biopolymer nanofibres, green electrospinning, electrospun materials for cancer research, nanofibrous nerve conduits, scaffold for retinal tissue engineering, and smart material. These topics are mainly related to biomedical applications, but studies on environmental engineering are also conferred.

APA, Harvard, Vancouver, ISO, and other styles

27

Meghana, Bhadarge, Dhas Umesh, Shirode Abhay, and Kadam Vilasrao. "Electrospinning Nanotechnology-A Robust Method for Preparation of Nanofibers for Medicinal and Pharmaceutical Application." Asian Journal of Pharmaceutical Research and Development 8, no. 3 (June 15, 2020): 176–84. http://dx.doi.org/10.22270/ajprd.v8i3.747.

Full text

Abstract:

Nanotechnology has evolved as a preferred choice in current research arena due to the advantages offered by it. The current research in pharmaceutical development is all about exploring and/or adopting different approaches for preparation of nanostructured drug delivery systems. Electrospinning nanotechnology has made its mark as a technology of choice for preparation of nanofibers for different applications. Electrospinning is a novel, robust and efficient fabrication process that is widely accepted and used to assemble nanofibers with distinct features such as length of several kilometers and diameter less than 300 nm. One of the most striking features of nanofibers is that they provide exceptionally high surface area-to-volume ratio and high porosity, making them a robust and attractive candidate for many advanced applications. Many researchers working on development of medicinal and pharmaceutical product design and development have reported their studies indicating successful implementation of electrospinning nanotechnology for preparation of nanofibers with distinct medicinal and pharmaceutical drug delivery applications. Authors of this article aims to provide a comprehensive review of electrospinning method for preparation of nanofibers with respect to theoretical principle, mechanics of electrospinning, critical process parameters, polymers and drug loaded nanofibers incorporated in different drug delivery systems for various pharmaceutical application.

APA, Harvard, Vancouver, ISO, and other styles

28

Kalwar, Kaleemullah, and Ming Shen. "Electrospun cellulose acetate nanofibers and Au@AgNPs for antimicrobial activity - A mini review." Nanotechnology Reviews 8, no. 1 (November 12, 2019): 246–57. http://dx.doi.org/10.1515/ntrev-2019-0023.

Full text

Abstract:

Abstract Au@Ag nanoparticles decorated on cellulose paper could be worthful biomedical applications. Electrospinning technique is broadly employed for fabrication of nano and micro size fibers with a variety of biopolymers adding cellulose acetate nanofibers. Evolutions in cellulose research demonstrate that it is an anticipating material for the biomedical application. Nanofibers acquired by electrospinning technique were utilized in various biomedical applications. In this report, electrospinning of cellulose acetate, the solvent choice for cellulose acetate e-spun nanofabrication and decoration of AgNPs including shape and size for antimicrobial activity are argued.

APA, Harvard, Vancouver, ISO, and other styles

29

Wang, Chong, Sze Nga Tong, Yuk Hang Tse, and Min Wang. "Conventional Electrospinning vs. Emulsion Electrospinning: A Comparative Study on the Development of Nanofibrous Drug/Biomolecule Delivery Vehicles." Advanced Materials Research 410 (November 2011): 118–21. http://dx.doi.org/10.4028/www.scientific.net/amr.410.118.

Full text

Abstract:

Over the past decade, intensive research has been conducted on electrospinning of fibrous tissue engineering scaffolds and their applications in body tissue regeneration. For providing multifunctions and/or enhancing the biological performance, drugs or biomolecules can be incorporated in electrospun fibers using normally one of these techniques: (1) direct dissolution, (3) emulsion electrospinning, and (3) coaxial electrospinning. In this investigation, for constructing nanofibrous delivery vehicles, conventional electrospinning using polymer solutions with directly dissolved drugs or biomolecules and emulsion electrospinning were studied and compared. Bovine serum albumin (BSA) was used as a model protein and the drug was rifamycin, a hydrophobic antibiotic. A poly (lactic-co-glycolic acid) containing the protein or drug was electrospun into fibers. In these two routes of fabricating drug-or biomolecule-loaded nanofibers, different polymer concentrations and emulsion formulations were investigated. Various aspects of the fibrous delivery vehicles were investigated using several techniques and the in vitro release behaviour was studied.

APA, Harvard, Vancouver, ISO, and other styles

30

Hanumantharao and Rao. "Multi-Functional Electrospun Nanofibers from Polymer Blends for Scaffold Tissue Engineering." Fibers 7, no. 7 (July 19, 2019): 66. http://dx.doi.org/10.3390/fib7070066.

Full text

Abstract:

Electrospinning and polymer blending have been the focus of research and the industry for their versatility, scalability, and potential applications across many different fields. In tissue engineering, nanofiber scaffolds composed of natural fibers, synthetic fibers, or a mixture of both have been reported. This review reports recent advances in polymer blended scaffolds for tissue engineering and the fabrication of functional scaffolds by electrospinning. A brief theory of electrospinning and the general setup as well as modifications used are presented. Polymer blends, including blends with natural polymers, synthetic polymers, mixture of natural and synthetic polymers, and nanofiller systems, are discussed in detail and reviewed.

APA, Harvard, Vancouver, ISO, and other styles

31

Lin, Jia Horng, Jin Jia Hu, Chao Tsang Lu, Wen Cheng Chen, Chien Lin Huang, and Ching Wen Lou. "Manufacturing Technique of the Biocompatible Polymer Nanofiber Membrane by Electrospinning." Applied Mechanics and Materials 184-185 (June 2012): 1404–7. http://dx.doi.org/10.4028/www.scientific.net/amm.184-185.1404.

Full text

Abstract:

This research produced nanofiber membrane with polyethylene oxide (PEO) by electrospinning; the influence of the three parameters —mixture ratio of solution, electric field, and distance between the capillary tip and the collecting plate, on electrospinning was then explored. According to the results of the experiment, the fiber membrane with a diameter of 120 nm could be obtained when the optimum electric filed was 0.6 kV/cm and the distance between the capillary tip and the collecting board was 15 cm. Finally, the spunlace nonwoven was coated with the electrospinning solution with the optimum parameters, creating the asymmetric dressings.

APA, Harvard, Vancouver, ISO, and other styles

32

Sun, Xue Feng, Yong Liu, Jian Liu, Rui Wang, and Yan Li Hu. "Multi-Bubble Electrospinning of Nanofibers." Advanced Materials Research 843 (November 2013): 26–33. http://dx.doi.org/10.4028/www.scientific.net/amr.843.26.

Full text

Abstract:

Multi-bubble electrospinning is considered as one of efficient techniques which have potential for large scale production of nanofibers. However, there is a lack of published research to better understand the formation of bubbles and the mutual interference among these bubbles. In this paper, the formation methods of multiple bubbles on the free liquid surface were examined to determine which ones performed relatively well. The influence of solution concentration, applied voltage, gas pressure, liquid length and the shape of electrode on the process and morphology of nanofibers were also investigated. The results showed that multiple gas tubes in the solution was the best choice to produce stable multiple bubbles though the number of bubbles was less than that obtained by the other methods. Some important processing parameters, such as solution concentration, applied voltage and the shape of electrode, had an important influence on the morphologies of nanofibers. Finally, both experimental and theoretical investigations in this process proved that the mutual interference among bubbles existed during multi-bubble electrospinning process.

APA, Harvard, Vancouver, ISO, and other styles

33

Huling, Jennifer, Beate Lyko, Sabine Illner, Nicklas Fiedler, Niels Grabow, and Michael Teske. "Development of UV-Reactive Electrospinning Method Based on Poly(ethylene glycol) diacrylate Crosslinking." Current Directions in Biomedical Engineering 6, no. 3 (September 1, 2020): 189–92. http://dx.doi.org/10.1515/cdbme-2020-3048.

Full text

Abstract:

AbstractElectrospinning is a popular method for creating nonwoven fiber materials for a wide variety of applications. In the field of biomaterials, electrospun materials are favoured because of a high surface-to-volume ratio which can be useful for drug loading and release, and because nanoscale fibers mimic native tissue structures, improving cell interactions. However limitations exist with regards to traditional solvent evaporation-based electrospinning techniques. A new area of research into reactive electrospinning is investigating methods of electrospinning that rely on in situ crosslinking rather than solvent evaporation to stabilize fibers. These techniques can potentially reduce the waste of excess solvents and make it easier to electrospin water soluble polymers. In this work, UV photocrosslinked PEGDA is evaluated as a material for reactive electrospinning. To facilitate the electrospinning process poly(ethylene glycol) diacrylate (PEGDA) is combined with polyvinyl alcohol (PVA). PEGDA/PVA solutions can be successfully electrospun under constant UV light exposure to initiate the crosslinking of the PEGDA. Reactive electrospun fibers appear more stable immediately after spinning and after washing with water, indicating successful photo crosslinking.

APA, Harvard, Vancouver, ISO, and other styles

34

Al-Furaiji, Mustafa Hussein, and Khairi R. Kalash. "Desalination by Membrane Distillation Using Electrospun Membranes." Journal of Engineering 26, no. 1 (December 25, 2019): 35–42. http://dx.doi.org/10.31026/j.eng.2020.01.04.

Full text

Abstract:

Electrospinning is a novel technique that can be used to produce highly porous fibers with highly tunable properties. In this research, this technique is adopted to prepare the electrospun nanofiber membrane for membrane distillation application. A custom-built electrospinning setup was made to prepare the nanofibers membrane. Polyvinylidene fluoride (PVDF) polymer was used in the electrospinning process due to its high hydrophobicity. Electrospun (PVDF) nanofibers were tested in direct contact membrane distillation (DCMD) process using 0.6 M sodium chloride as a feed solution. The resulting nanofiber membrane exhibited high performance in DCMD (i.e. relatively high water flux and high salt rejection). It has been found that the prepared membrane has a uniform and fibrous structure as indicated by the scanning electron microscopy (SEM). Relatively thin fibers with a diameter of 250 nm were produced during the Electrospinning process.

APA, Harvard, Vancouver, ISO, and other styles

35

Wei, Liang, Haonan Yu, Lin Jia, and Xiaohong Qin. "High-throughput nanofiber produced by needleless electrospinning using a metal dish as the spinneret." Textile Research Journal 88, no. 1 (November 13, 2016): 80–88. http://dx.doi.org/10.1177/0040517516677232.

Full text

Abstract:

In the research field of functional materials, electrospinning has become one of the most effective methods to produce nanofiber. The traditional electrospinning method often uses a hollow metal needle to prepare nanofiber with minimal throughput. In this paper, we used needleless electrospinning technology to produce high-throughput nanofiber by using a metal dish as the spinneret. A finite element method has been adopted to investigate electric potential and electric field strength of the spinneret under different applied voltages and collection distance. The effects of different process parameters, including solution concentration, applied voltage and collection distance, on the throughput and diameter of nanofiber have been investigated in the experiment. Narrow distribution nanofiber can be prepared successfully. This novel method of using a metal dish as the spinneret will make a contribution to the development of needleless electrospinning for the production of high-throughput nanofiber.

APA, Harvard, Vancouver, ISO, and other styles

36

Hong, Wei, Qing Shan Li, Jian Jiao, Hui Long Guo, Jing Sun, Jun Liu, Bin Guo, and Guang Zhong Xing. "Research on the Preparation of Food-Grade Sea Cucumber/Gelatin Nanofiber Membrane with Electrospinning Method." Advanced Materials Research 427 (January 2012): 139–42. http://dx.doi.org/10.4028/www.scientific.net/amr.427.139.

Full text

Abstract:

In this paper, the Food-grade sea cucumber / gelatin nanofiber was for the first time successfully prepared with electrospinning method. With the help of the infrared spectroscopy and X-ray diffraction, this paper analyzed the content of the nanosea cucumber powder and gelatin as well as the impact of different preparation methods on the crystalline of the Fiber membrane. Furthermore, Scanning electron microscope (SEM) was utilized to observe the fiber morphology, and thus discuss the best content of gelatin. The Experimental result manifested that as electrospinning method was used in preparing the Food-grade sea cucumber / gelatin nanofiber membrane, the nanosea cucumber powder and gelatin dispersed well in the fiber membrane, while it did worse in the crystalline of membrane. As the Gelatin content of the spinning solution is 10 wt. %, the spinnabiliy as well as its fiber-forming properties is of optimum.

APA, Harvard, Vancouver, ISO, and other styles

37

Fan, Chengxu, Zhaoyang Sun, and Lan Xu. "Fluid-mechanic model for fabrication of nanoporous fibers by electrospinning." Thermal Science 21, no. 4 (2017): 1621–25. http://dx.doi.org/10.2298/tsci160403044f.

Full text

Abstract:

A charged jet in the electrospinning process for fabrication of nanoporous fibers is studied theoretically. A fluid-mechanic model considering solvent evaporation is established to research the effect of solvent evaporation on nanopore structure formation. The model gives a powerful tool to offering in-depth physical under-standing and controlling over electrospinning parameters such as voltage, flow rate, and solvent evaporation rate.

APA, Harvard, Vancouver, ISO, and other styles

38

Zhang, Jiarong, Han Wang, Zhifeng Wang, Honghui Yao, Guojie Xu, Shengyong Yan, Jun Zeng, et al. "Influence and evaluation of array-nozzle geometry on near- field electrospinning direct writing." Journal of Engineered Fibers and Fabrics 14 (January 2019): 155892501989564. http://dx.doi.org/10.1177/1558925019895640.

Full text

Abstract:

Near-field electrospinning direct writing of array-nozzle is an efficient method for preparing large-area aligned fibers. However, electric field between the array-nozzle interferes with the stability and uniformity of near-field electrospinning, and little research has been done in this field. To clarify the electric field interference generated by array-nozzle, the experimental results compared with the simulation are discussed. In this work, electric field interference between the five-nozzle linear arrangement near-field electrospinning process was demonstrated by the initial ejection behavior, the electric field distribution of near-field electrospinning environment and the deposition spacing of fibers. In addition, we developed a simple and flexible method serving as a quantitative evaluation index for evaluating the degree of electric field interference. Then, the mapping effects of electric field interference of nozzle structure on the surface morphology and uniformity of aligned fibers were studied, including the number of nozzle, nozzle spacing and nozzle length with linear and toothed arrangement. According to the result of experiment and characterization, suitable arrayed nozzle parameters for stably direct-write aligned array pattern with near-field electrospinning were available, whose geometric parameters are linear two-nozzle with a nozzle spacing of 2 mm and a nozzle length of 6.35 mm. Finally, on the basis of our previous research, a microfluidic channel was successfully prepared on polydimethylsiloxane by two-nozzle cooperation, which verified the rationality of the geometry.

APA, Harvard, Vancouver, ISO, and other styles

39

Berezina, O. Ya, N. P. Markova, E. N. Kolobova, A. L. Pergament, D. S. Yakovleva, V. P. Zlomanov, and N. V. Krivoshchapov. "Vanadium Oxide Nanofibers: Synthesis and Research on Functional Properties." Micro and Nanosystems 12, no. 1 (January 21, 2020): 68–74. http://dx.doi.org/10.2174/1876402911666190806104117.

Full text

Abstract:

Aim: Vanadium oxide nanofibers have been manufactured by the sol–gel electrospinning method followed by the thermal treatment in air and argon. Materials and Methods: The samples are characterized by optical, laser confocal and scanning electron microscopy, energy-dispersive X-ray elemental analysis, X-ray diffraction, cyclic voltammetry, and electrical conductivity measurements. Results: The obtained VO2 nanofibers demonstrate the semiconductor-to-metal phase transition. Also, the vanadium pentoxide nanofibers are examined as electrode materials for rechargeable Li-ion batteries.

APA, Harvard, Vancouver, ISO, and other styles

40

Bachs-Herrera, Anna, Omid Yousefzade, Luis J. del Valle, and Jordi Puiggali. "Melt Electrospinning of Polymers: Blends, Nanocomposites, Additives and Applications." Applied Sciences 11, no. 4 (February 18, 2021): 1808. http://dx.doi.org/10.3390/app11041808.

Full text

Abstract:

Melt electrospinning has been developed in the last decade as an eco-friendly and solvent-free process to fill the gap between the advantages of solution electrospinning and the need of a cost-effective technique for industrial applications. Although the benefits of using melt electrospinning compared to solution electrospinning are impressive, there are still challenges that should be solved. These mainly concern to the improvement of polymer melt processability with reduction of polymer degradation and enhancement of fiber stability; and the achievement of a good control over the fiber size and especially for the production of large scale ultrafine fibers. This review is focused in the last research works discussing the different melt processing techniques, the most significant melt processing parameters, the incorporation of different additives (e.g., viscosity and conductivity modifiers), the development of polymer blends and nanocomposites, the new potential applications and the use of drug-loaded melt electrospun scaffolds for biomedical applications.

APA, Harvard, Vancouver, ISO, and other styles

41

Rodoplu, Didem, and Mehmet Mutlu. "Effects of Electrospinning Setup and Process Parameters on Nanofiber Morphology Intended for the Modification of Quartz Crystal Microbalance Surfaces." Journal of Engineered Fibers and Fabrics 7, no. 2 (June 2012): 155892501200700. http://dx.doi.org/10.1177/155892501200700217.

Full text

Abstract:

To improve the performance of mass sensitive biosensors, the surface of a piezoelectric quartz crystal transducer, is expanded by employing electrospun nanofibers to its surface. This work describes the effect of vertical - horizontal electrospinning setups and electrospinning parameters on fiber morphology. The research objective was to obtain finer and non-beaded fiber morphologies, via controllable and repeatable process parameters, for further applications of QCM surfaces in high performance DNA-, Aptamer-, Immunosensor applications.

APA, Harvard, Vancouver, ISO, and other styles

42

Li, Qing, Lanlan Mu, Fenghua Zhang, Zhichao Mo, Chuanyu Jin, and Weiguo Qi. "Manufacture and property research of heparin grafted electrospinning PCU artificial vascular scaffolds." Materials Science and Engineering: C 78 (September 2017): 854–61. http://dx.doi.org/10.1016/j.msec.2017.04.148.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Wang, Zhi Feng, Xin Du Chen, Shen Neng Huang, Fei Yu Fang, and Han Wang. "Research on Deposition Characteristics of the Double-Nozzle in Near-Field Electrospinning." Key Engineering Materials 679 (February 2016): 59–62. http://dx.doi.org/10.4028/www.scientific.net/kem.679.59.

Full text

Abstract:

With the double-nozzle NFES process, the uncertainty is more suitable to investigate than the multi-nozzle NFES and also meet higher liquid throughput requirement than conventional electrospinning. Moreover, the key point is to control the deposition characteristics of double-nozzle NFES under the interaction of the nozzles. This paper simulates the change in electric field intensity with the change of nozzle length and voltage. The experiment shows that the deposition distance becomes smaller when needle length increases, however, the influence of voltage is opposite in certain range. According to the study above, the results could be the guidance of the multi-nozzles NEFS in manufacturing process, and also can illustrate the force distribution of the jet with further modification.

APA, Harvard, Vancouver, ISO, and other styles

44

Tucker, Nick, Jonathan J. Stanger, Mark P. Staiger, Hussam Razzaq, and Kathleen Hofman. "The History of the Science and Technology of Electrospinning from 1600 to 1995." Journal of Engineered Fibers and Fabrics 7, no. 2_suppl (June 2012): 155892501200702. http://dx.doi.org/10.1177/155892501200702s10.

Full text

Abstract:

This paper outlines the story of the inventions and discoveries that directly relate to the genesis and development of electrostatic production and drawing of fibres: electrospinning. Current interest in the process is due to the ease with which nano-scale fibers can be produced in the laboratory. In 1600, the first record of the electrostatic attraction of a liquid was observed by William Gilbert. Christian Friedrich Schönbein produced highly nitrated cellulose in 1846. In 1887 Charles Vernon Boys described the process in a paper on nano-fiber manufacture. John Francis Cooley filed the first electrospinning patent in 1900. In 1914 John Zeleny published work on the behaviour of fluid droplets at the end of metal capillaries. His effort began the attempt to mathematically model the behavior of fluids under electrostatic forces. Between 1931 and 1944 Anton Formhals took out at least 22 patents on electrospinning. In 1938, N.D. Rozenblum and I.V. Petryanov-Sokolov generated electrospun fibers, which they developed into filter materials. Between 1964 and 1969 Sir Geoffrey Ingram Taylor produced the beginnings of a theoretical underpinning of electrospinning by mathematically modelling the shape of the (Taylor) cone formed by the fluid droplet under the effect of an electric field. In the early 1990s several research groups (notably that of Reneker who popularised the name electrospinning) demonstrated electrospun nano-fibers. Since 1995, the number of publications about electrospinning has been increasing exponentially every year.

APA, Harvard, Vancouver, ISO, and other styles

45

Xie, Gai, Yong Liu, Hong He, and Ke Jian Wang. "Progress in Preparation of Phenolic Fibers by Electrospinning." Materials Science Forum 815 (March 2015): 638–42. http://dx.doi.org/10.4028/www.scientific.net/msf.815.638.

Full text

Abstract:

Phenolic fiber is a versatile material. This article focused on introduction of the progress of generating phenolic fibers using solution electrospinning method and its applications, as well as the trail exploration of preparing phenolic fibers by melt electrospinning. For the research on preparation of phenolic fibers using solution electrospinning, researchers added polymers or additive agents to adjust the viscosity and electrical conductivity of the spinning solution. Then they cured and carbonized the electrospun fibers to reach their varied aims. After these two processes, the brittle nature of the phenolic fibers has been greatly changed. What’s more, the modification makes it easier to be dealed with in the analysis tests and be more suitable to be applied as adsorbent materials, nonconductive materials, and flexible materials.

APA, Harvard, Vancouver, ISO, and other styles

46

Firych-Nowacka, Anna, Krzysztof Smolka, and Sławomir Wiak. "Improving electrospinning process by numerical analysis of 3-D computer models." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 38, no. 4 (July 1, 2019): 1098–110. http://dx.doi.org/10.1108/compel-11-2018-0450.

Full text

Abstract:

Purpose Electrospinning is a method of the polymer super thin fibres formation by the electrostatic field. The distribution of electrostatic field affects the effectiveness of the electrospinning. Design/methodology/approach This paper presents various computer models that can improve the electrospinning process. The possibilities of modelling the electrostatic field in the design of electrospinning equipment are presented. Findings In the research part, the one focussed on finding a cylinder-shaped collector structure to limit the adverse effect of an uneven distribution of the electric field intensity on the collector. Originality/value The paper concerns the improvement of the electrospinning process with the use of electrostatic field modelling. In the first part, several possible applications of electrostatic models have been indicated, thanks to which the efficiency of the process has been improved. The original solution of the collector geometry was presented, which according to the authors, in comparison with previous models, gives the most promising results. In this solution, it was possible to obtain an even distribution of the electric field intensity while removing the unfavourable effect of the field strength increase on the outer edges of the collector. The most important aspect in this paper is electric field strength analysis.

APA, Harvard, Vancouver, ISO, and other styles

47

Imangazy, Aldan, Gaukhar Smagulova, Bayan Kaidar, Zulkhair Mansurov, Almagul Kerimkulova, Kuanysh Umbetkaliev, Anvar Zakhidov, Pavel Vorobyev, and Talkybek Jumadilov. "Compositional Fibers Based on Coal Tar Mesophase Pitch Obtained by Electrospinning Method." Chemistry & Chemical Technology 15, no. 3 (August 15, 2021): 403–7. http://dx.doi.org/10.23939/chcht15.03.403.

Full text

Abstract:

This research examines the use of coal-processing wastes of Shubarkol deposit (Kazakhstan) in obtaining useful materials such as carbon fibers. For our experiments, mesophase pitch was obtained by coal tar heat treatment at 773 K. Spinnable solution was prepared by crushing mesophase pitch into the pieces with adding poly(methylmethacrylate) as a fiber-forming material and 1,2-dichloroethane as a solvent. Elemental analysis revealed that the chemical composition of mesophase pitch (С – 91.48 %; О – 8.52 %; S – 0.00 %) showed that heat treatment up to 773 K leads to the complete removal of sulfur-containing components which affect the mesophase formation. Raman data of the obtained pitch revealed the appearance of D (1366 cm-1) and G (1605 cm-1) peaks, which are responsible for carbon materials; another peak at 2900 cm-1 shows the presence of C–H bonds. Carbon fibers with the diameter of 0.8–1.75 μm were obtained by electrospinning method in laboratory settings.

APA, Harvard, Vancouver, ISO, and other styles

48

Garibay-Alvarado, Jesús Alberto, León Francisco Espinosa-Cristóbal, and Simón Yobanny Reyes-López. "FIBROUS SILICA-HYDROXYAPATITE COMPOSITE BY ELECTROSPINNING." International Journal of Research -GRANTHAALAYAH 5, no. 2 (February 28, 2017): 39–47. http://dx.doi.org/10.29121/granthaalayah.v5.i2.2017.1701.

Full text

Abstract:

New nanocomposite membrane was fabricated by electrospinning. The nanocomposite combines a glass and hydroxyapatite (HA). This research proposed the incorporation of glass to counteract the brittleness of HA in a composite formed by coaxial fibers which will be used for bone replacement. Calcium phosphate ceramics are used widely for dental and orthopedic reasons, because they can join tightly through chemical bonds and promote bone regeneration. Precursors HA and SiO2 were synthetized through the sol-gel method and then incorporated into a polymeric PVP matrix; later they were processed by coaxial electrospinning to obtain fibers with an average diameter of 538 nm which were characterized with techniques such as Attenuated Total Reflectance-Fourier Transform Infrared Spectroscopy, Differential Thermal Analysis and Scanning Electron Microscopy. Chemical and physical characterization of the membranes evidenced fibers in a coaxial disposition with a glass core and hydroxyapatite cover. The micro-porous fibers have many potential uses in the repair and treatment of bone defects, drug delivery and tissue engineering. Through ATR-FTIR and SEM-EDX analysis the presence of characteristic chemical groups, the fiber composition and microstructure were determined.

APA, Harvard, Vancouver, ISO, and other styles

49

Gergely, Attila, József Kántor, Enikő Bitay, and Domokos Biró. "Electrospinning of Polymer Fibres Using Recycled PET." Acta Materialia Transylvanica 2, no. 1 (April 1, 2019): 19–26. http://dx.doi.org/10.33924/amt-2019-01-04.

Full text

Abstract:

Abstract The effective recycling of polymer materials remains unresolved to this day, and this has had a devastating effect on the environment. This study examines an alternative method to PET recycling that is the generation of polymer fibers and fiber mats for filtration applications. The electrospinning instrumentation used in this study had to be designed and built in order to carry out the research. We have managed to produce PET fibers with 200-600 nm diameter, and free-standing fiber mats that could potentially be used in filtration applications.

APA, Harvard, Vancouver, ISO, and other styles

50

Suresh, Sinduja, Alexander Becker, and Birgit Glasmacher. "Impact of Apparatus Orientation and Gravity in Electrospinning—A Review of Empirical Evidence." Polymers 12, no. 11 (October 22, 2020): 2448. http://dx.doi.org/10.3390/polym12112448.

Full text

Abstract:

Electrospinning is a versatile fibre fabrication method with applications from textile to tissue engineering. Despite the appearance that the influencing parameters of electrospinning are fully understood, the effect of setup orientation has not been thoroughly investigated. With current burgeoning interest in modified and specialised electrospinning apparatus, it is timely to review the impact of this seldom-considered parameter. Apparatus configuration plays a major role in the morphology of the final product. The primary difference between spinning setups is the degree to which the electrical force and gravitational force contribute. Since gravity is much lower in magnitude when compared with the electrostatic force, it is thought to have no significant effect on the spinning process. But the shape of the Taylor cone, jet trajectory, fibre diameter, fibre diameter distribution, and overall spinning efficiency are all influenced by it. In this review paper, we discuss all these developments and more. Furthermore, because many research groups build their own electrospinning apparatus, it would be prudent to consider this aspect as particular orientations are more suitable for certain applications.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Electrospinning – Research'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles