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Journal articles on the topic 'Modified Commercial PAN Fibers'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Abdouss, Majid, Mousavi Shoushtari, Aminoddin Haji, and Behnam Moshref. "Fabrication of chelating diethylenetriaminated pan micro and nano fibers for heavy metal removal." Chemical Industry and Chemical Engineering Quarterly 18, no. 1 (2012): 27–34. http://dx.doi.org/10.2298/ciceq110719043a.

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In this study, commercial acrylic fibers were modified with diethylenetriamine to prepare metal chelating fibers. The effects of process parameters on the efficiency of the reaction were investigated. FTIR spectroscopy and TGA analysis were used to confirm the chemical changes made to the fibers during the reaction. The ability of the modified fibers for removal of Pb (II), Cu (II) and Ce (IV) ions from aqueous media was determined. The modified fibers showed a slight decrease in mechanical properties compared to raw ones. Furthermore, the acrylic micro fibers were electrospun to nanofibers an

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2

Down, W. B., and R. T. K. Baker. "Modification of the surface properties of carbon fibers via the catalytic growth of carbon nanofibers." Journal of Materials Research 10, no. 3 (1995): 625–33. http://dx.doi.org/10.1557/jmr.1995.0625.

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The surface of commercial pitch and PAN-based carbon fibers has been modified by coating the structures with catalytically formed carbon nanofibers. Reaction conditions have been established that enable one to achieve optimum coverage by the secondary nanostructures without inducing any degradation in the mechanical properties of the parent fibers. Using this approach it is possible to produce a dramatic increase in the surface area of the fibrous structure from a nominal value of about 1.0 m2/g (untreated condition) up to between 250 and 300 m2/g (complete nanofiber coverage). This process re

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3

Wang, Xiao Xiao, Tao Chen, and Ji Ping Wang. "Degradation of Synthetic Reactive Dye Wastewater Based on Amine-Functionalized Polyacrylonitrile Fiber." Key Engineering Materials 671 (November 2015): 425–30. http://dx.doi.org/10.4028/www.scientific.net/kem.671.425.

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A series of functional fibers have been prepared by modifying a commercially available polyacrylonitrilefiber (PANF) with polyamines such as ethylenediamine, tetraethylenepentamine and hyperbranched polyethylenimine (HPEI), and then used to coordinate with Fe3+, respectively, to produce Fe-modified PAN fiber complexes. The chemical structures of modified PANFs were verified by Fourier transform infrared spectroscopy (FT-IR). X-ray Diffraction (XRD) characterization showed that the inner crystal region of PANF was damaged during the introduction of amine groups.. Organic elemental analysis resu

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4

Al Angari, Yasser M., Yaaser Q. Almulaiky, Maha M. Alotaibi, Mahmoud A. Hussein, and Reda M. El-Shishtawy. "Synthesis and Characterization of Aminoamidine-Based Polyacrylonitrile Fibers for Lipase Immobilization with Effective Reusability and Storage Stability." International Journal of Molecular Sciences 24, no. 3 (2023): 1970. http://dx.doi.org/10.3390/ijms24031970.

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Lipases are extensively utilized industrial biocatalysts that play an important role in various industrial and biotechnological applications. Herein, polyacrylonitrile (PAN) was treated with hexamethylene diamine (HMDA) and activated by glutaraldehyde, then utilized as a carrier support for Candida rugosa lipase. In this regard, the morphological structure of modified PAN before and after the immobilization process was evaluated using FTIR and SEM analyses. The immobilized lipase exhibited the highest activity at pH 8.0, with an immobilization yield of 81% and an activity of 91%. The optimal p

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5

Yokota, Shingo, Kumiko Matsuo, Takuya Kitaoka, and Hiroyuki Wariishi. "Specific interaction acting at a cellulose-binding domain/cellulose interface for papermaking application." BioResources 3, no. 4 (2008): 1030–41. http://dx.doi.org/10.15376/biores.3.4.1030-1041.

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Specific and strong cellulose-binding characteristics were utilized for promoting retention of additives in contaminated papermaking systems. Cellulose-binding domain (CBD) of cellulase derived from Trichoderma viride was separated by digestion with papain, and then introduced into anionic polyacrylamide (A-PAM) through a condensation reaction using water-soluble carbodiimide. The CBD-modified A-PAM (CBD-A-PAM) showed good retention on pulp fibers, resulting in high tensile strength paper sheets. The effect remained almost unchanged in the presence of model interfering substances such as ligni

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6

Buche?ska, Jadwiga. "Modified polyacrylonitrile (PAN) fibers." Journal of Applied Polymer Science 65, no. 10 (1997): 1955–66. http://dx.doi.org/10.1002/(sici)1097-4628(19970906)65:10<1955::aid-app13>3.0.co;2-w.

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7

Aung, Kay Thwe, Seung-Hee Hong, Seong-Jik Park, and Chang-Gu Lee. "Removal of Cu(II) from Aqueous Solutions Using Amine-Doped Polyacrylonitrile Fibers." Applied Sciences 10, no. 5 (2020): 1738. http://dx.doi.org/10.3390/app10051738.

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Polyacrylonitrile (PAN) fibers were prepared via electrospinning and were modified with diethylenetriamine (DETA) to fabricate surface-modified PAN fibers. The surface-modified PAN fibers were used to evaluate their adsorption capacity for the removal of Cu(II) from aqueous solutions. Batch adsorption experiments were performed to examine the effects of the modification process, initial concentration, initial pH, and adsorbent dose on the adsorption of Cu(II). Kinetic analysis revealed that the experimental data fitted the pseudo-second-order kinetic model better than the pseudo-first-order mo

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8

Wu, Fan, and Shuibo Xie. "The adsorption of U(VI) by persimmon tannin modified aminated polyacrylonitrile fiber." Journal of Physics: Conference Series 2587, no. 1 (2023): 012031. http://dx.doi.org/10.1088/1742-6596/2587/1/012031.

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Abstract In this study, a green and efficient persimmon tannin functionalized polyacrylonitrile fiber (PAN-TETA-PT) was prepared and used to treat U(VI). The influence of pH value, adsorption temperature and time, and fiber material dosage on the adsorption U(VI) of PAN-TETA-PT fibers were investigated, and the kinetics, isotherm, and thermodynamics of fibers were analyzed. When the pH is 6, the temperature is 30°C, and the fiber dosage is 0.2 g·L−1, the adsorption rate of PAN-TETA-PT fibers to U(VI) was 96.5%, and the U(VI) adsorption capacity was 159.75 mg/g. The kinetic and isothermal studi

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9

Bhatti, Zulfiqar Ali, Khadija Qureshi, Ghulamullah Maitlo, and Shoaib Ahmed. "Study of PAN Fiber and Iron ore Adsorbents for Arsenic Removal." Civil Engineering Journal 6, no. 3 (2020): 548–62. http://dx.doi.org/10.28991/cej-2020-03091491.

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The main idea to conduct this study is the treatment of hazardous arsenite (As+3) and arsenate (As+5)from water by two efficient adsorbetns i.e. polyacrylonitrile fiber (organic) and iron ore (inorganic). Polyacrylonitrile (PAN) fibers were chemically modified prior to loading iron using a solution of diethylenetriamine and aluminum chloride hexahydrate. The characterization of PAN fibers was performed through FTIR spectroscopy, which shows the binding of functional groups on PAN fibers surfaces. Atomic absorption spectrometer (AAS) was used to analyze arsenic concentration in samples. The imp

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10

Ahn, Damiro, Hyun-Jung Choi, Ho-dong Kim, and Sang Young Yeo. "Properties of Conductive Polyacrylonitrile Fibers Prepared by Using Benzoxazine Modified Carbon Black." Polymers 12, no. 1 (2020): 179. http://dx.doi.org/10.3390/polym12010179.

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Composites of carbon black (CB) and polymers are attractive for producing conductive fibers. Herein, to achieve improved interactions with polymers, the surface of CB was modified to form 4-aminobenzoyl-functionalized carbon black (ABCB), benzoxazine-functionalized carbon black (BZCB), and Ag-anchored carbon black (Ag-ABCB). The surface-modified CBs were characterized by Fourier transform infrared spectroscopy and thermogravimetric analysis, and X-ray photoelectron spectroscopy was utilized to confirm the presence of Ag in Ag-ABCB. Conductive polyacrylonitrile (PAN) fibers were wet-spun with c

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11

Wang, Yi, Jie Liu, and Jie Ying Liang. "Thermo-Chemical Reactions of Modified PAN Fibers during Heat-Treatment Process." Advanced Materials Research 11-12 (February 2006): 73–76. http://dx.doi.org/10.4028/www.scientific.net/amr.11-12.73.

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Thermo-chemical reactions of modified PAN fibers during heat-treatment process were systematically studied by DSC, FT-IR, EA, XPS, etc. Comparing with original PAN fibers, chemical reactions, structures and elemental compositions of fibers modified with potassium permanganate (KMnO4) were all changed at a certain extent. KMnO4 had reduced the activation energy of cyclization reactions, decreased the area and widened the peak of exothermic curve, decreased the velocity of cyclization reaction, increased the oxygen content about 67%, hence increased C-O-C and C=O groups and the core/shell ratio.

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12

Carvalho, Luiz Eduardo, Marcio Florian, Carlos Alberto Alves Cairo та Mario Lima de Alencastro Graça. "Precursor Influence on the Obtention of β-SiC Hollow Fibers". Materials Science Forum 591-593 (серпень 2008): 578–82. http://dx.doi.org/10.4028/www.scientific.net/msf.591-593.578.

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SiCf/SiC composite has a high potential for applications such as thermal protection systems due to its high oxidation resistance, high heat emissivity and low through-the-thickness (transverse) thermal conductivity, mainly if hollow fibers are used as reinforcement phase of the composite. PAN polymer is a precursor widely used and studied for developing high performance carbon fibers. Most commercial carbon fibers are basically derived from PAN polymer. In this work, the influence of the fiber specific mass on the morphology of SiC fiber obtained by conversion reactions from PAN oxidized fiber

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13

Park, Soo-Jin, Min-Kang Seo, and Young-Seak Lee. "Surface characteristics of fluorine-modified PAN-based carbon fibers." Carbon 41, no. 4 (2003): 723–30. http://dx.doi.org/10.1016/s0008-6223(02)00384-6.

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14

Zhang, Zhaohuan, Runjun Sun, and Huifang Ma. "Preparation and characterization of modified collagen/PAN blending fibers." Fibers and Polymers 9, no. 5 (2008): 551–55. http://dx.doi.org/10.1007/s12221-008-0088-z.

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15

Boguń, Maciej, and Teresa Mikołajczyk. "PAN-based fibers modified with two-component ceramic nanoparticles." Journal of Applied Polymer Science 112, no. 4 (2009): 2343–50. http://dx.doi.org/10.1002/app.29608.

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16

Yao, Yao, Yonghong Liang, Rahul Navik, Xiongwei Dong, Yingjie Cai, and Ping Zhang. "Modification of Polyacrylonitrile Fibers by Coupling to Thiosemicarbazones." Materials 12, no. 23 (2019): 3980. http://dx.doi.org/10.3390/ma12233980.

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This work reports the modification of Polyacrylonitrile (PAN) fibers by coupling to thiosemicarbazones to achieve the biological activity for the applications in the food product packaging. After modification, seven thiosemicarbazone compounds were synthesized. The as-synthesized thiosemicarbazone compounds were bonded to PAN fibers via covalent coupling, which was confirmed using Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy. The mean graft efficiency of the compounds was about 1.92%, and the antibacterial efficiency wa

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17

Aguila López, Josefina, Marisel Sánchez Rivera, José Alfredo Pescador Rojas, Maribel Flores González, Joel Díaz Reyes, and José Francisco Sánchez Ramírez. "Controlled preparation and chemical actuation of polyacrylonitrile fibers." Biotecnia 25, no. 3 (2023): 189–96. http://dx.doi.org/10.18633/biotecnia.v25i3.2122.

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Pure polyacrylonitrile (PAN) fibers with diameter size at micrometric scale were obtained and collected radially using an immersion-jet wet spinning .system. This technique is a fast and easy approach to fabricate micrometric PAN fibers. The diameter of the fiber can be easily controlled by adjusting the size of the spinneret. Uniform, smooth and continuous PAN microfibers were suitable modified by thermal stabilization and alkaline saponification to obtain pH-sensitive fibers. The effect of diameter size fiber on the chemical actuation behavior was investigated in terms of length change chara

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18

Li, Xiang, and Xiaonan Dang. "Effect of Potassium Permanganate Modification on Plasticized Spinning Polyacrylonitrile Fibers with Different Diameters." Polymers 10, no. 12 (2018): 1330. http://dx.doi.org/10.3390/polym10121330.

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Plasticized spinning polyacrylonitrile (PAN) fibers with different diameters were chemically modified by potassium permanganate (KMnO4). The modification effects of different diameter fibers were studied for the first time. Differential scanning calorimetry (DSC) results show that, compared with the large diameter ones, small diameter modified fibers show lower cyclization starting temperature (Ti) and activation energy (E). Both kinds of fibers exhibit better modification effects compared with solution-spun fibers. For the small diameter fibers, chemical modification can occur at low treatmen

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19

Ferreira, João, Tiago Salgueiro, Jossano Marcuzzo, Eduardo Arruda, João Ventura, and Joana Oliveira. "Textile PAN Carbon Fibers Cathode for High-Voltage Seawater Batteries." Batteries 9, no. 3 (2023): 178. http://dx.doi.org/10.3390/batteries9030178.

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Rechargeable sodium seawater batteries (SWBs) are gaining the world leadership of high voltage energy storage devices for marine environments. With natural seawater as the source of active material, SWBs can be supplied infinitely with Na cations. Because of their open-structured cathode, the cathode material’s specific surface area, porosity and wettability need to be optimized to achieve a high-performance cell. In this work, activated textile polyacrylonitrile (PAN) fibers were used to produce an activated carbon felt with a facile manufacturing process. The easy and low-cost production of

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20

Peters, Romy, Dawon Jang, Daniel Sebastian Jens Wolz, et al. "Investigation of the Influence of Hexabenzocoronene in Polyacrylonitrile-Based Precursors for Carbon Fibers." Fibers 11, no. 2 (2023): 14. http://dx.doi.org/10.3390/fib11020014.

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For several decades, carbon fibers have been used for lightweight engineering in aircraft automotive and sports industries, mostly based on high-quality polyacrylonitrile (PAN). We investigated a novel PAN-based precursor fiber (PF) modified with a polycyclic aromatic hydrocarbon, namely hexabenzocoronene (HBC), which is expected to improve the thermal conversion process and to create a carbon fiber (CF) with enhanced mechanical properties. For this purpose, the novel PF and a spun-like homopolymeric PAN-based PF were thermally stabilized and carbonized in continuous lab-scale plants. The effe

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21

Koukoufilippou, Danai, Ioannis L. Liakos, George I. Pilatos, Niki Plakantonaki, Alexandros Banis, and Nikolaos K. Kanellopoulos. "Separation of Magnesium and Lithium Ions Utilizing Layer-by-Layer Polyelectrolyte Modification of Polyacrylonitrile Hollow Fiber Porous Membranes." Materials 17, no. 23 (2024): 5878. https://doi.org/10.3390/ma17235878.

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This study explores the layer-by-layer (LBL) modification of polyacrylonitrile (PAN) hollow fibers for effective Mg2+/Li+ separation. It employs an LBL method of surface modification using polyelectrolytes, specifically aiming to enhance ion selectivity and improve the efficiency of lithium extraction from brines or lithium battery wastes, which is critical for battery recycling and other industrial applications. The modification process involves coating the hydrolyzed PAN fibers with alternating layers of positively charged polyelectrolytes, such as poly(allylamine hydrochloride) (PAH), polye

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22

Kaidar, Bayan, Gaukhar Smagulova, Aigerim Imash, and Zulkhair Mansurov. "Gas Sensitive Materials Based on Polyacrylonitrile Fibers and Nickel Oxide Nanoparticles." Journal of Composites Science 6, no. 11 (2022): 326. http://dx.doi.org/10.3390/jcs6110326.

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The results of the synthesis of PAN/NiO composite fibers by the electrospinning method are presented. The electrospinning installation included a rotating drum collector for collecting fibers. Nickel oxide nanoparticles were synthesized by solution combustion synthesis from nickel nitrate and urea. It was shown that monophase NiO nanoparticles with average particle sizes of 154 nm could be synthesized by this method. NiO nanoparticles were investigated by X-ray diffraction analysis and scanning electron microscopy. Based on NiO nanoparticles, composite PAN/NiO fibers were obtained by electrosp

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23

Zhu, Lien, Di Wu, Baolong Wang, Jing Zhao, Zheng Jin, and Kai Zhao. "Reinforcing high-density polyethylene by polyacrylonitrile fibers." Pigment & Resin Technology 47, no. 1 (2018): 86–94. http://dx.doi.org/10.1108/prt-03-2017-0030.

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Purpose The purpose of this paper is to find a new method to reinforce high-density polyethylene (HDPE) with polyacrylonitrile fibers (PAN). Furthermore, the crystallinity, viscoelasticity and thermal properties of HDPE composites have also been investigated and compared. Design/methodology/approach For effective reinforcing, samples with different content fillers were prepared. HDPE composites were prepared by melt blending with double-screw extruder prior to cutting into particles and the samples for testing were made using an injection molding machine. Findings With the addition of 9 Wt.% P

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24

Wang, Jiaqi, Yang Li, Haiyang Tian, Junlu Sheng, Jianyong Yu, and Bin Ding. "Waterproof and breathable membranes of waterborne fluorinated polyurethane modified electrospun polyacrylonitrile fibers." RSC Adv. 4, no. 105 (2014): 61068–76. http://dx.doi.org/10.1039/c4ra09129a.

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25

Ko, Tse-Hao. "Raman spectrum of modified PAN-based carbon fibers during graphitization." Journal of Applied Polymer Science 59, no. 4 (1996): 577–80. http://dx.doi.org/10.1002/(sici)1097-4628(19960124)59:4<577::aid-app2>3.0.co;2-q.

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26

Liu, Peiyu, Xiongfei Zhang, Chuang Ma, et al. "Preparation and Properties of PP/PAN/Cotton Fibers Composite Membrane as Lithium-Ion Battery Separator with Thermal Shut-Off Function." Batteries 9, no. 2 (2023): 113. http://dx.doi.org/10.3390/batteries9020113.

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The lithium-ion battery separator plays roles of separating the positive and negative electrodes and providing ion channels, and at the same time, it can play a more important role in the safety of the lithium-ion battery. In this work, a modified PP (polypropylene)/PAN (polyacrylonitrile)/cotton fibers composite membrane with a thermal shut-off function was prepared by a wet-laid process. The results are as follows: When the fibers’ mass fraction was 50%, the composite membrane had the best combination properties, with a tensile strength of 1.644 KN·m−1, the porosity was 63%, and it had good

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27

Rac-Rumijowska, Olga, and Helena Teterycz. "Electrical Conductance Mechanism of Silver–Polyacrylonitrile Nanocomposite Fibers." Materials 16, no. 8 (2023): 3085. http://dx.doi.org/10.3390/ma16083085.

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This paper presents the mechanism of electrical conductivity in nanocomposite polyacrylonitrile (PAN) fibers modified with silver nanoparticles (AgNPs). Fibers were formed by the wet-spinning method. The nanoparticles were introduced into the polymer matrix as a result of direct synthesis in the spinning solution from which the fibers were obtained, thereby influencing the chemical and physical properties of the polymer matrix. The structure of the nanocomposite fibers was determined using SEM, TEM, and XRD, and the electrical properties were determined using the DC and AC methods. The conduct

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28

Liu, Shu Ping, Ke Qing Han, Lei Chen, Ying Zheng, and Mu Huo Yu. "Structure and Performances of Plasticized Melt-Spun Polyacrylonitrile Precursor Fiber." Applied Mechanics and Materials 723 (January 2015): 652–55. http://dx.doi.org/10.4028/www.scientific.net/amm.723.652.

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The structure and performances of melt-spun PAN precursor fiber were studied by combination of SEM, DSC, UV and so on. The tensile strength of melt-spun PAN precursor fiber is 0.68GPa. The surface is very smooth and the cross-section is around. Due to the partially cyclized structure of melt-spun precursor fiber, the exothermic peak becomes broader with reducing intensity in compared with commercial fibers from solution-spun.

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Pang, Ling, Peng Wang, Bo Li, Pan Pan, and Shao Peng Wu. "Investigation of Rheological Characteristics of Carbon Fiber Modified Asphalt Binder." Key Engineering Materials 599 (February 2014): 182–86. http://dx.doi.org/10.4028/www.scientific.net/kem.599.182.

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The performance of asphalt concrete is strongly dependent on the rheological properties of asphalt binders. In this paper, PAN carbon fiber was employed to improve the conductivity of asphalt mixture. To better understand the performance of conductive asphalt mixture, the present study investigated the rheological characteristics of asphalt binders containing PAN carbon fiber. Additionally, scanning electron microscopy (SEM) was used to elucidate the microstructure and interface reaction between the asphalt and the PAN carbon fiber. Experimental results showed that carbon fibers in the asphalt

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Li, Daiqi, Bin Tang, Xi Lu, et al. "Simultaneous PAN Carbonization and Ceramic Sintering for Fabricating Carbon Fiber-Ceramic Composite Heaters." Applied Sciences 9, no. 22 (2019): 4945. http://dx.doi.org/10.3390/app9224945.

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In this study, a single firing was used to convert stabilized polyacrylonitrile (PAN) fibers and ceramic forming materials (kaolin, feldspar, and quartz) into carbon fiber/ceramic composites. For the first time, PAN carbonization and ceramic sintering were achieved simultaneously in one thermal cycle and the microscopic morphologies and physical features of the obtained carbon fiber/ceramic composites were characterized in detail. The obtained carbon fiber/ceramic composite showed comparable flexural strength as commercial ceramic tiles. Meanwhile, the composite showed exceptional electro-ther

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31

Jia, Zhao, and Yan Gong Yang. "Study on Structure and Properties of Polyacrylonitrile Fiber Modified by Hydrazine Hydrate." Advanced Materials Research 548 (July 2012): 24–28. http://dx.doi.org/10.4028/www.scientific.net/amr.548.24.

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In this study, the flame-retardant PAN fiber with good moisture absorption, good mechanical properties and better thermal properties has been prepared by blending solution of sodium hydroxide and hydrazine hydrate. FTIR spectra presented that new amide and cyclization-crosslinked pyridine group band peaks appeared. X-ray diffraction showed that the the crystal structure of PAN fibers has been converted from quasicrystalline structure into partially crystallized structure after modification treatment. SEM micrographs indicated that the original longitudinal surface microgroove has changed to la

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Kaidar, B. B., G. T. Smagulova, A. A. Imash, S. Zhaparkul, and Z. A. Mansurov. "Pitch-based carbon fibers: preparation and applications." ГОРЕНИЕ И ПЛАЗМОХИМИЯ 19, no. 3 (2021): 159–69. http://dx.doi.org/10.18321/cpc438.

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Attention to carbon fiber (CF) conditioned by their unique physicochemical, mechanical and electrical properties, which makes them in demand in various fields of activity. Today there are several kinds of carbon fibers, most of which (about 90%) are made of polyacrylonitrile (PAN). Despite the fact that carbon fibers are produced from several types of different precursors, their widespread commercial use is limited by the high cost of the product. Has, many research and engineering group seek to reduce the cost of production by using cheap carbon raw materials. A likely solution to this proble

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Su, Linjie, Bohong Li, Dongyu Zhao, Chuanli Qin, and Zheng Jin. "Modified polyacrylonitrile-based activated carbon fibers applied in supercapacitor." Pigment & Resin Technology 45, no. 3 (2016): 164–71. http://dx.doi.org/10.1108/prt-03-2015-0029.

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Purpose The purpose of this paper is to prepare a new modified activated carbon fibers (ACFs) of high specific capacitance used for electrode material of supercapacitor. Design/methodology/approach In this study, the specific capacitance of ACF was significantly increased by using the phenolic resin microspheres and melamine as modifiers to prepare modified PAN-based activated carbon fibers (MACFs) via electrospinning, pre-oxidation and carbonization. The symmetrical supercapacitor (using MACF as electrode) and hybrid supercapacitor (using MACF and activated carbon as electrodes) were tested i

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34

Fabia, Janusz, Andrzej Gawłowski, Monika Rom, Czesław Ślusarczyk, Anna Brzozowska-Stanuch, and Marta Sieradzka. "PET Fibers Modified with Cloisite Nanoclay." Polymers 12, no. 4 (2020): 774. http://dx.doi.org/10.3390/polym12040774.

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The alternative method of reducing the flammability of polyethylene terephthalate (PET) fibers, analogous to dyeing of PET fibers with dispersed dyes in a high-temperature bath, was proposed. A commercial organophilic montmorillonite Cloisite®15A (C15A) was applied as a flame retardant. The aim of the presented work was to evaluate the effectiveness of the introduced modifier and the improvement of the flame-retardant properties of PET fibers by limiting oxygen index (LOI) and thermogravimetric analysis (TGA) measurements. Evolved gas analysis (EGA) by spectrometric method (FTIR) during couple

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35

Chen, Jie, Shu Yu, and Xiang Xiong. "Anodic Surface Treatment on Carbon Fibers - The Effect on Microstructure of Pyrocarbon Matrix during Chemical Vapor Deposition." Advanced Materials Research 399-401 (November 2011): 363–67. http://dx.doi.org/10.4028/www.scientific.net/amr.399-401.363.

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Before chemical vapor deposition, PAN-based carbon fibers were modified by anodic surface treatment for different time, using 5% ammonium bicarbonate as electrolyte. Effects of the surface treatment on surface mophology, chemical functional groups of carbon fibers were investigated. The microstructure of pyrocarbon were analysed as well. The results show that the anodic surface treatment by 5% ammonium bicarbonate for proper time can improve the surface morphology and adjust the surface functinal groups of carbon fibers, which can promote the deposition of ordered pyrocarbon during chemical va

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Feng, Li Li, Jian Fei Zhang, Hui Luo, and Zheng Li. "Surface Modification of Acrylonitrile Fibers and Membrane by Nitrilase from Escherichia Coli BL21 (DE3)/pET-Nit." Advanced Materials Research 175-176 (January 2011): 651–55. http://dx.doi.org/10.4028/www.scientific.net/amr.175-176.651.

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The surface of polyacrylonitrile fibers and membrane were modified by nitrilase from Escherichia coli BL21 (DE3)/pET-Nit. Escherichia coli BL21(DE3)/pET-Nit was able to convert nitrile groups on PAN fibers and membrane to corresponding carboxylic acid as indicated by X-ray photoelectron spectroscopy (XPS). An increase of O/C atomic ratio on the fiber and membrane surface showed an increase in hydrophilicity and fabric-dyeing efficiency. Strength of treated fiber decreased by only 1.17%, because only surfacial nitrile groups of acrylic fibers were hydrolyzed by E.coli BL21(DE3)/pET-Nit.

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Jiang, Zhenyu, Hui Zhang, Zhong Zhang, Hideki Murayama, and Keiji Okamoto. "Improved bonding between PAN-based carbon fibers and fullerene-modified epoxy matrix." Composites Part A: Applied Science and Manufacturing 39, no. 11 (2008): 1762–67. http://dx.doi.org/10.1016/j.compositesa.2008.08.005.

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38

Chattopadhyay, Sruti, Avneet Kaur, Swati Jain, and Harpal Singh. "Sensitive detection of food-borne pathogen Salmonella by modified PAN fibers-immunoassay." Biosensors and Bioelectronics 45 (July 2013): 274–80. http://dx.doi.org/10.1016/j.bios.2013.01.032.

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Zhao, Wenbo, Biao Liu, and Jian Chen. "Preparation of Amino-Modified PAN Fibers with Triethylenetetramine as Aminating Reagents and Their Application inCO2Adsorption." Journal of Nanomaterials 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/940908.

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Amino-modified polyacrylonitrile (AMPAN) fiber was synthesized by the reaction of polyacrylonitrile (PAN) fiber and triethylenetetramine (TETA) in the presence of water. The effect of water amount, reaction temperature, and time on the weight increase degree and alkali content of the AMPAN fiber was investigated in detail. The characterization results indicated that TETA could be grafted onto the surface of PAN fiber by this method. However, the highest adsorption capacity of the AMPAN fibers was only 0.09 g/g even at 15 bar and 50°C, which was much lower than the porous materials. The reason

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Jiang, Xuefeng, Qin Ouyang, Dapeng Liu, et al. "Preparation of low-cost carbon fiber precursors from blends of wheat straw lignin and commercial textile-grade polyacrylonitrile (PAN)." Holzforschung 72, no. 9 (2018): 727–34. http://dx.doi.org/10.1515/hf-2017-0191.

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AbstractLow-cost precursor fibers (PFs) were prepared from blends of a wheat straw lignin (WSL) and a commercial textile-grade polyacrylonitrile (PAN) by wet spinning, and then the precursors were converted into carbon fibers (CFs) by thermal stabilization and carbonization. The PFs were characterized by scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC). The lignin content in the blends was found to play an important role in the PF structure, which was closely related to the change of intermolecular forces in the spin

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Fromager, Bénédicte, Emilie Marhuenda, Benjamin Louis, Norbert Bakalara, Julien Cambedouzou, and David Cornu. "Recent Advances in Electrospun Fibers for Biological Applications." Macromol 3, no. 3 (2023): 569–613. http://dx.doi.org/10.3390/macromol3030033.

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Electrospinning is a simple and versatile method to generate nanofibers. Remarkable progress has been made in the development of the electrospinning process. The production of nanofibers is affected by many parameters, which influence the final material properties. Electrospun fibers have a wide range of applications, such as energy storage devices and biomedical scaffolds. Among polymers chosen for biological scaffolds, such as PLA or collagen, polyacrylonitrile (PAN) has received increasing interest in recent years due to its excellent characteristics, such as spinnability, biocompatibility,

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He, Da Song, Cun Ping Liu, Sheng Guo, and Xiu Ying Li. "Adsorption of H₂S and SO₂ on Activated Carbon Fibers Modified by Ammonium Nitrate." Materials Science Forum 675-677 (February 2011): 1065–68. http://dx.doi.org/10.4028/www.scientific.net/msf.675-677.1065.

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The enhancement effect of using PAN-based carbon fibers surface modified by ammonium nitrate for removing SO2 and H2S in moist air at room temperature was characterized and investigated. The pore structure of the samples so prepared was examined by adsorption measurement. Surface groups introduced by treatment with ammonium nitrate was assessed by xray photoelectron spectroscopy. The results show that the amount of sulfur dioxide and hydrogen sulfide adsorbed with the treated carbon fibers are increased by 112% and 93% and ammonium nitrate treatment improved original carbon fibers adsorption p

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Pereira, Fabio, Fabiana Vieira, Luiz de Castro, and Ricardo Michel. "The Influence of Sample Preparation on the Strength Results ofa Pan-based Carbon Fiber." Chemistry & Chemical Technology 4, no. 4 (2010): 329–37. http://dx.doi.org/10.23939/chcht04.04.329.

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In this work the influence of different configurations in the sample preparation process on commercial polyacrylonitrile-based carbon fibers mechanical tests were studied. Mechanical properties, such as tensile strength, Young’s modulus, elongation and Weibull modulus, were evaluated. The results showed that all sample preparation steps may have strong influence on the results.

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Alcalá-Sánchez, Daniel, Juan-Carlos Tapia-Picazo, Adrian Bonilla-Petriciolet, Gabriel Luna-Bárcenas, J. M. López-Romero, and Alberto Álvarez-Castillo. "Analysis of Terpolymerization Systems for the Development of Carbon Fiber Precursors of PAN." International Journal of Polymer Science 2020 (June 22, 2020): 1–13. http://dx.doi.org/10.1155/2020/8029516.

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The thermal stabilization of polyacrylonitrile fibers (FPAN) is one of the most important steps in the production of carbon fibers (CFs). In this paper, new precursor polymers from PAN have been synthesized with different chemical characteristics using a solution polymerization, and FPAN was obtained using an unconventional wet spinning system in the drying and collapsing steps. The effect of different operation conditions, comonomers, and termonomers on the properties of precursor polymers, polymerization reactions, mechanical properties, structural characteristics, and stabilization of the F

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Tallam, Anirudh, Satyanarayana Bollu, Yeole Shivraj Narayan, and Jaya Prakash Kode. "Optimization of Mechanical Performance for 3D Printed Kevlar and Carbon Fiber Composites." Materials Science Forum 1081 (March 24, 2023): 23–39. http://dx.doi.org/10.4028/p-c20s5s.

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Kevlar is commercial brand of fibers supporting para-aramids of light weight for major part of composite. It is applicable in robotics and automobile sectors where parts need to possess high tensile strength and excellent fatigue resistance. Carbon fibers are processed by thermal conversion of organic fiber with low Carbon content such as polyacrylonitrile (PAN) which contain around thousands of filaments. In the current work, samples are produced through Mark Two 3D printer and subjected under investigation for improving mechanical performance in evaluating tensile, flexural and impact behavi

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Hagberg, Johan, Simon Leijonmarck, and Göran Lindbergh. "High Precision Coulometry of Commercial PAN-Based Carbon Fibers as Electrodes in Structural Batteries." Journal of The Electrochemical Society 163, no. 8 (2016): A1790—A1797. http://dx.doi.org/10.1149/2.0041609jes.

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Penda, Ravi Prasad, and Ramana Reddy I V. "Experimental study on flexural strength of slurry infiltrated fibrous concrete (SIFCON) produced with various percentages of waste steel fibers recovered from used tires." E3S Web of Conferences 529 (2024): 01026. http://dx.doi.org/10.1051/e3sconf/202452901026.

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Slurry Infiltrated Fibrous Concrete (SIFCON), a modified version of Fiber Reinforced Concrete (FRC), addresses the challenge of increased fiber volume fractions. Commercially produced steel fibers are typically used in FRC and SIFCON. Efforts to reduce energy use in making commercial steel fibers have led to seeking alternative sources. Vehicular tires are typically recycled when no longer usable, yielding steel fibers among the products. Emphasis lies in recovering steel fibers from used tires as part of resource recovery from waste. Experimental work explored flexural strength in SIFCON with

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Alipoyo, Jericko C., Venniece Etienne B. Magoncia, Angel Ainaleigh M. Perido, and Mary Donnabelle L. Balela. "Parametric Study of the Adsorption of Pb (II) and Cr (VI) Ions on Modified PAN-Kapok Fibers." Key Engineering Materials 880 (March 2021): 133–38. http://dx.doi.org/10.4028/www.scientific.net/kem.880.133.

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This paper presents a parametric study on the adsorptive property of NaOH-treated polyacrylonitrile (PAN)-kapok fibers for the removal of Pb (II) and Cr (VI) ions in aqueous solutions. Generally, the NaOH-hydrolyzed PAN-kapok favors the adsorption of Pb (II) compared to Cr (VI). The adsorption capacity was in the range of 41.67-83.33 mg/g as the initial Pb (II) concentration was increased from 50 to 100 ppm. Similarly, the adsorption capacity for Cr (VI) was from 8.24 to 15.81 mg/g as the initial concentration was raised from 50 to 150 ppm. The adsorption capacity was also enhanced by increasi

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Qin, Biao, Kun Yang, Yi Liu, Bin Zhou, Xiaonan Zhou, and Jiangtao Cai. "Preparation and lithium storage performance of residual oil/polyacrylonitrile-derived porous carbon/silicon composite fibers." Journal of Physics: Conference Series 3030, no. 1 (2025): 012031. https://doi.org/10.1088/1742-6596/3030/1/012031.

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Abstract The development of high-performance carbon-silicon anode materials is crucial for advancing lithium-ion battery technology. Herein, we fabricated cladding structure porous carbon/silicon composite fibers derived from residual oil and polyacrylonitrile (PAN) via electrospinning and programmed carbonization, using polymethyl methacrylate (PMMA) as a pore-forming agent. Optimized synthesis with a residual oil: PAN: PMMA: citric acid-modified nano-silicon ratio of 1:1:0.8:0.4 yields CSi@RCF-R10S4 that demonstrates superior electrochemical performance. The composite delivers a remarkable d

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Zubova, N. G., V. M. Gerasimova, N. L. Levkina, T. P. Ustinova, and K. B. Kostin. "Properties and structural features of epoxycomposites reinforced with modified PAN- flagellum." Proceedings of the Voronezh State University of Engineering Technologies 84, no. 4 (2023): 200–205. http://dx.doi.org/10.20914/2310-1202-2022-4-200-205.

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The performance characteristics of composite materials reinforced with polyacrylonitrile technical flagellum (PAN-TF), which has the reactivity of functional groups, can be improved by modifying it. The aim of the work was to study the effect of polyacrylonitrile fibrous materials, applied with AGM-9, A-187, A-174 and Duron OS 3151 modifiers, on the kinetics of the ED-20 epoxy resin curing process, structural features of the developed composites and their operational properties. The methods of kinetic research, differential scanning calorimetry (DSC), scanning electron microscopy and mechanica

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