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Journal articles on the topic 'Polymeric composites. Graphite. Nanostructured materials'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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1

Sun, Wanhong, Zunli Mo, Hailing Li, Yu Sun, and Yanqing Zhou. "Preparation and electrochemistry of nanostructured PPy/graphite nanosheets/rare earth ions composites for supercapacitor." Polymer Engineering & Science 54, no. 12 (2013): 2731–38. http://dx.doi.org/10.1002/pen.23821.

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2

Osman, Amr, Abdelmoty Elhakeem, Saleh Kaytbay, and Abdalla Ahmed. "Influence of Different Nano-Structured Fillers on the Performance of Epoxy Nanocomposites." Nano Hybrids and Composites 29 (June 2020): 51–60. http://dx.doi.org/10.4028/www.scientific.net/nhc.29.51.

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Nowadays, multi-functional materials are strongly needed to meet the requirements of next-generation electronic devices. In this work, two different nanostructured fillers, reduced graphene oxide (RGO) and nanoalumina, were chosen to study their effect on the thermal, electrical and mechanical properties of the prepared epoxy composites at different loadings (0.5 to 2 wt%). RGO was firstly prepared and characterized by XRD, Raman spectroscopy and TEM confirming its production. The results revealed that RGO showed excellent adhesion with the polymer. Whilst, alumina aggregated and debonded from

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3

Pereira, Maria J., Joao S. Amaral, Nuno J. O. Silva, and Vitor S. Amaral. "Nano-Localized Thermal Analysis and Mapping of Surface and Sub-Surface Thermal Properties Using Scanning Thermal Microscopy (SThM)." Microscopy and Microanalysis 22, no. 6 (2016): 1270–80. http://dx.doi.org/10.1017/s1431927616011867.

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AbstractDetermining and acting on thermo-physical properties at the nanoscale is essential for understanding/managing heat distribution in micro/nanostructured materials and miniaturized devices. Adequate thermal nano-characterization techniques are required to address thermal issues compromising device performance. Scanning thermal microscopy (SThM) is a probing and acting technique based on atomic force microscopy using a nano-probe designed to act as a thermometer and resistive heater, achieving high spatial resolution. Enabling direct observation and mapping of thermal properties such as t

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4

Fajstavr, Dominik, Klára Neznalová, Václav Švorčík, and Petr Slepička. "LIPSS Structures Induced on Graphene-Polystyrene Composite." Materials 12, no. 21 (2019): 3460. http://dx.doi.org/10.3390/ma12213460.

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A laser induced periodic surface structure (LIPSS) on graphene doped polystyrene was prepared by the means of a krypton fluoride (KrF) laser with the wavelength of 248 nm and precisely desired physico-chemical properties were obtained for the structure. Surface morphology after laser modification of polystyrene (PS) doped with graphene nanoplatelets (GNP) was studied. Laser fluence values of modifying laser light varied between 0–40 mJ·cm−2 and were used on polymeric PS substrates doped with 10, 20, 30, and 40 wt. % of GNP. GNP were incorporated into PS substrate with the solvent casting metho

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5

Vatui (Moise), Alexandra Georgiana, Sorina Nicoleta Valsan, Corneliu Fratila, et al. "Synthesis and Characterization of Composite Membranes Based on Carbon Functionalized with Gold Nanoparticles." Materiale Plastice 56, no. 2 (2019): 309–14. http://dx.doi.org/10.37358/mp.19.2.5177.

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The purpose of this experimental laboratory work is to obtain composite membranes having carbon and gold nanoparticles in the matrix. Consideration was made of using graphene oxide, a material which, under certain conditions, can generate membranes by a self-assembly process under vacuum in an aqueous or organic medium. The cellulose acetate (CA) - graphene oxide (GO) composite membranes have been functionalized with gold nanoparticles (AuNP) by two technological processes: thermal evaporation and ultrasonic mixing of stable graphene oxide and gold suspensions. The stable suspensions containin

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6

Wong, Shing-Chung, Eric Sutherland, and Fawn Uhl. "Materials Processes of Graphite Nanostructured Composites Using Ball Milling." Materials and Manufacturing Processes 21, no. 2 (2006): 159–66. http://dx.doi.org/10.1081/amp-200068659.

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7

Tang, Zhaohui, Chaoliang He, Huayu Tian, et al. "Polymeric nanostructured materials for biomedical applications." Progress in Polymer Science 60 (September 2016): 86–128. http://dx.doi.org/10.1016/j.progpolymsci.2016.05.005.

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8

Kim, GeunHyung, and Yuri M. Shkel. "Polymeric Composites Tailored by Electric Field." Journal of Materials Research 19, no. 4 (2004): 1164–74. http://dx.doi.org/10.1557/jmr.2004.0151.

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A solid composite of desirable microstructure can be produced by curing a liquid polymeric suspension in an electric field. Redistribution effect of the field-induced forces exceeds that of centrifugation, which is frequently employed to manufacture functionally graded materials. Moreover, unlike centrifugational sedimentation, the current approach can electrically rearrange the inclusions in targeted areas. The electric field can be employed to produce a composite having uniformly oriented structure or only modify the material in selected regions. Field-aided technology enables polymeric comp

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9

Galimberti, Maurizio, Valeria Cipolletti, Sara Musto, et al. "RECENT ADVANCEMENTS IN RUBBER NANOCOMPOSITES." Rubber Chemistry and Technology 87, no. 3 (2014): 417–42. http://dx.doi.org/10.5254/rct.14.86919.

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ABSTRACT Nanocomposites were prepared via melt blending, based on organically modified clays (OC), carbon nanotubes (CNT), and graphitic nanofillers made by a few layers of graphene (nanoG). In particular, nanocomposites based on a hybrid filler system, with a nanostructured filler such as carbon black (CB), are examined. It is shown that low crystalline order in the interlayer space of a layered nanofiller (such as OC and nanoG) leads to easier delamination. Nanofillers give rise to filler networking at low concentration, particularly in the presence of CB. Hybrid filler systems lead to nanoc

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10

Xue, Yu, Shuai Chen, Jiarui Yu, et al. "Nanostructured conducting polymers and their composites: synthesis methodologies, morphologies and applications." Journal of Materials Chemistry C 8, no. 30 (2020): 10136–59. http://dx.doi.org/10.1039/d0tc02152k.

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Nanostructured conducting polymers have been widely studied and applied in state-of-the-art technologies over the past few decades because they simultaneously offer the features of polymeric conductors and the nano-size effect of nanomaterials.

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11

Abdullah, Nur Munirah, Anika Zafiah Mohd Rus, and M. F. L. Abdullah. "Functionalized Waterborne Polyurethane-Based Graphite-Reinforced Composites." Advances in Materials Science and Engineering 2019 (June 4, 2019): 1–13. http://dx.doi.org/10.1155/2019/8710370.

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The synthesis and characterization of waterborne polyurethane-based oxidized graphite- (WPUG-) reinforced composites is disclosed. The morphology-structure relations of WPUG composites are studied using field emission scanning electron microscopy (FESEM) and Fourier transform infrared (FTIR) spectroscopy. Prior to this, it is confirmed that, in the WPUG composites, the graphite particles containing functional groups such as hydroxyl and carboxylic groups are randomly distributed and attributed to the formation of interconnected interface within the polymeric composites. This promotes enhanceme

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12

Yama Nzoma, Evarice, Alain Guillet, and Philippe Pareige. "Nanostructured Multifilamentary Carbon-Copper Composites: Fabrication, Microstructural Characterization, and Properties." Journal of Nanomaterials 2012 (2012): 1–11. http://dx.doi.org/10.1155/2012/360818.

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This work is part of research on the emerging techniques to produce bulk nanostructured composites materials by severe plastic deformation and their characterization. Based on the Levi work, we present a new method to synthesize a composite wire-containing carbon-nanosized filaments (graphite and C60fullerenes) embedded in a copper matrix. The originality of this process is using powder media as fiber. Microstructures and electrical, mechanical, and thermal properties are presented.

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13

Bell, J. P., J. Chang, H. W. Rhee, and R. Joseph. "Application of ductile polymeric coatings onto graphite fibers." Polymer Composites 8, no. 1 (1987): 46–52. http://dx.doi.org/10.1002/pc.750080108.

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14

Wang, Ziming, Yiyang Cao, Decai Pan, and Sen Hu. "Vertically Aligned and Interconnected Graphite and Graphene Oxide Networks Leading to Enhanced Thermal Conductivity of Polymer Composites." Polymers 12, no. 5 (2020): 1121. http://dx.doi.org/10.3390/polym12051121.

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Natural graphite flakes possess high theoretical thermal conductivity and can notably enhance the thermal conductive property of polymeric composites. Currently, because of weak interaction between graphite flakes, it is hard to construct a three-dimensional graphite network to achieve efficient heat transfer channels. In this study, vertically aligned and interconnected graphite skeletons were prepared with graphene oxide serving as bridge and support via freeze-casting method. Three freezing temperatures were utilized, and the resulting graphite and graphene oxide network was filled in a pol

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15

Pryjmaková, Jana, Markéta Kaimlová, Tomáš Hubáček, Václav Švorčík, and Jakub Siegel. "Nanostructured Materials for Artificial Tissue Replacements." International Journal of Molecular Sciences 21, no. 7 (2020): 2521. http://dx.doi.org/10.3390/ijms21072521.

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This paper review current trends in applications of nanomaterials in tissue engineering. Nanomaterials applicable in this area can be divided into two groups: organic and inorganic. Organic nanomaterials are especially used for the preparation of highly porous scaffolds for cell cultivation and are represented by polymeric nanofibers. Inorganic nanomaterials are implemented as they stand or dispersed in matrices promoting their functional properties while preserving high level of biocompatibility. They are used in various forms (e.g., nano- particles, -tubes and -fibers)—and when forming the c

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16

Stassi, Stefano, and Giancarlo Canavese. "Spiky nanostructured metal particles as filler of polymeric composites showing tunable electrical conductivity." Journal of Polymer Science Part B: Polymer Physics 50, no. 14 (2012): 984–92. http://dx.doi.org/10.1002/polb.23091.

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17

Xue, Bai, Lanxiang Ji, Jianguo Deng, and Junhua Zhang. "Highly electrically conducting poly(L-lactic acid)/graphite composites prepared via in situ expansion and subsequent reduction of graphite." Journal of Polymer Engineering 38, no. 2 (2018): 167–77. http://dx.doi.org/10.1515/polyeng-2016-0293.

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AbstractIn this paper, highly electrically conductive polymeric composites were obtained by low-temperature expandable graphite (LTEG) filling poly(L-lactic acid) (PLLA) in the presence of ascorbic acid via anin situexfoliation and subsequent reduction process during the melt blending. The electrical conductivity of the PLLA/reduced and expanded graphite (R-EG) composites was determined by a four-point probe resistivity determiner and compared with that of the PLLA/expanded graphite (EG) composites. The percolation threshold of PLLA/R-EG blends decreased from 11.2 wt% to 7.1 wt%, which illustr

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18

Milikic, Jadranka, Nevena Markicevic, Aleksandar Jovic, Radmila Hercigonja, and Biljana Sljukic. "Glass-like carbon, pyrolytic graphite or nanostructured carbon for electrochemical sensing of bismuth ion?" Processing and Application of Ceramics 10, no. 2 (2016): 87–95. http://dx.doi.org/10.2298/pac1602087m.

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Different carbon electrodes were explored for application in electroanalysis, namely for sensing of bismuth ion as model analyte. Carbon materials tested included glassy carbon, basal and edge plane pyrolytic graphite, as well as nanostructured carbonized polyaniline prepared in the presence of 3,5-dinitrosalicylic acid. Bismuth ion was chosen as model analyte as protocol for its detection and quantifications is still to be determined. Herein, anodic stripping voltammetry was used with study of effect of several parameters such as scan rate and deposition time. Electrode based on carbonized po

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19

Shevchenko, Vitaliy G., Vladimir P. Volkov, Alexander N. Zelenetsky, Anatoliy T. Ponomarenko, and Oleg Figovsky. "Electromagnetic Wave Shielding and Fire Retardant Multifunctional Polymer Composites." Advanced Materials Research 47-50 (June 2008): 77–80. http://dx.doi.org/10.4028/www.scientific.net/amr.47-50.77.

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Novel PE- and PP-based electromagnetic wave shielding and absorbing materials with low combustibility, enhanced thermal and mechanical properties, containing graphite, grinded wood and fire retardants, were developed and investigated. Their flame-resistance, thermal and mechanical properties are investigated. Electromagnetic wave reflection coefficients of the materials over the frequency range 20-40 GHz were measured; despite low concentration (10%) of functional filler, reflection coefficient can be as low as -15 dB. Criteria of incombustibility of polymeric composites are formulated: thermo

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20

Zhao, Xian-Rui, Dun-Wen Zuo, Yong Chen, et al. "Combustion Synthesis of Nanostructured ZrC: Formation Process and Influencing Factors." Journal of Nanoscience and Nanotechnology 21, no. 4 (2021): 2196–202. http://dx.doi.org/10.1166/jnn.2021.19036.

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ZrC was produced by the combustion synthesis technology using Cu, Zr, and graphite as the starting element powders. The synthesis mechanism of ZrC was investigated by the combustion wave quenching experiment. Furthermore, the effects of sizes of C and Cu on the combustion synthesis behavior and products were also explored. Results revealed that ZrC was fabricated through the displacement reaction between C and Cu–Zr liquid. The Cu size hardly affected the combustion temperature and resultant products, indicating that the preparation cost of ZrC could be decreased by employing coarse Cu powders

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21

Busby, A. J., J. Zhang, C. J. Roberts, E. Lester, and S. M. Howdle. "Novel Nanostructured Polymeric Composites of Polycaprolactone and Ultra-High Molecular Weight Polyethylene via a Supercritical-Fluid Route." Advanced Materials 17, no. 3 (2005): 364–67. http://dx.doi.org/10.1002/adma.200400297.

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22

Suresha, B., B. N. Ramesh, K. M. Subbaya, and G. Chandramohan. "Mechanical and Three-body Abrasive Wear Behavior of Carbon-Epoxy Composite With and Without Graphite Filler." Journal of Composite Materials 44, no. 21 (2010): 2509–19. http://dx.doi.org/10.1177/0021998310369589.

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Fiber and particulate reinforced polymeric composites are known to possess high strength and attractive wear resistance in dry sliding conditions. Though the reinforcement and/filler type are known to control the properties, less is known about their tribo performance especially with graphite as filler material. How these composites perform in abrasive wear situations needs a proper understanding. Hence, the present investigation reports on the mechanical and three-body abrasive wear behavior of carbon fabric reinforced epoxy (C-E) and silane treated graphite filled C-E (Gr-C-E) composites. Th

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23

Shu, Shabbir Husain, and William J. Koros. "A General Strategy for Adhesion Enhancement in Polymeric Composites by Formation of Nanostructured Particle Surfaces." Journal of Physical Chemistry C 111, no. 2 (2007): 652–57. http://dx.doi.org/10.1021/jp065711j.

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24

Chung, Do, Nguyen Dinh, Tran Thao, Nguyen Nam, Tran Trung, and David Hui. "Study of nanostructured polymeric composites used for organic light emitting diodes and organic solar cells." World Journal of Engineering 9, no. 5 (2012): 399–406. http://dx.doi.org/10.1260/1708-5284.9.5.399.

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Polymeric nanocomposite films from PEDOT and MEH-PPV embedded with surface modified TiO2 nanoparticles were prepared, respectively for the hole transport layer (HTL) and emission layer (EL) in Organic Light Emitting Diodes (OLED). The composite of MEH-PPV + nc-TiO2 was used for Organic Solar Cells (OCS). The results from the characterization of the properties of the nanocomposites and devices showed that electrical (I-V characteristics) and spectroscopic (photoluminescent) properties of the conjugate polymers were enhanced due to the incorporation of nc-TiO2 in the polymers. The OLEDs made fro

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25

Portes, R. C., B. H. K. Lopes, M. A. do Amaral Junior, D. E. Florez-Vergara, S. F. Quirino, and M. R. Baldan. "Effect of granulometric distribution on electromagnetic shielding effectiveness for polymeric composite based on natural graphite." Science and Engineering of Composite Materials 26, no. 1 (2019): 531–39. http://dx.doi.org/10.1515/secm-2019-0037.

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Abstract In this study, the electromagnetic interference (EMI) shielding effectiveness (SE) of polymer composites based on natural graphite in flakes (NGF) and silicone rubber was investigated with the aim to contribute to the development of the technology of electromagnetic shielding materials. This topic has attracted great attention to the aeronautical and aerospace applications, due to the serious problems that EMI can cause to the functioning of electronic devices. According to this, the present work has produced samples of composite materials with variations on the sizes of the filler pa

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26

Xu, De-fang, Yan Song, Xiao-dong Tian, Kai Wang, Quan-gui Guo, and Lang Liu. "[New Carbon Materials 2016, 31(6): 615–620]. Preparation and electrochemical properties of nanostructured MnO2/exfoliated graphite composites." Carbon 114 (April 2017): 756. http://dx.doi.org/10.1016/j.carbon.2016.12.074.

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27

Pandey, Alok Kumar, Kavita Singh, and Kamal K. Kar. "Thermo-mechanical properties of graphite-reinforced high-density polyethylene composites and its structure–property corelationship." Journal of Composite Materials 51, no. 12 (2016): 1769–82. http://dx.doi.org/10.1177/0021998316683782.

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Composite prepared by mixing of different forms of carbon or other reinforcing fillers with polymer, is one of the possible ways to enhance the performance of polymeric materials. The present work focuses on the study of viscoelastic, thermal, electrical and mechanical properties of graphite flake-reinforced high-density polyethylene composites. The composites are processed by melt mixing using vertical twin-screw micro-compounder followed by final sample preparation via micro injection moulding. The reinforcing filler, graphite flake, is varied from 0 to 50 vol.% with respect to the polymer m

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28

Rodrigues, Ivan, Mafalda Guedes, and Alberto C. Ferro. "Microstructural Changes in Copper–Graphite–Alumina Nanocomposites Produced by Mechanical Alloying." Microscopy and Microanalysis 21, no. 1 (2014): 120–31. http://dx.doi.org/10.1017/s1431927614013403.

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AbstractMicrostructural features of nanostructured copper-matrix composites produced via high-energy milling were studied. Copper–graphite–alumina batches were planetary ball milled up to 16 h; copper–graphite batches were also prepared under the same conditions to evaluate the effect of contamination from the milling media. The microstructure of the produced materials was characterized by field emission gun scanning electron microscopy/energy-dispersive spectroscopy and related to Raman, X-ray diffraction, and particle size analysis results. Results showed that alumina was present in all mill

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29

Kar, Prativa, and B. B. Khatua. "PTCR characteristics of polycarbonate/nickel-coated graphite-based conducting polymeric composites in presence of poly(caprolactone)." Polymer Composites 32, no. 5 (2011): 747–55. http://dx.doi.org/10.1002/pc.21093.

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30

Luo, Sida, and Tao Liu. "Graphite Nanoplatelet Enabled Embeddable Fiber Sensor for in Situ Curing Monitoring and Structural Health Monitoring of Polymeric Composites." ACS Applied Materials & Interfaces 6, no. 12 (2014): 9314–20. http://dx.doi.org/10.1021/am5017039.

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31

Rodríguez-Lorenzo, Luis M., R. García-Carrodeguas, M. A. Rodríguez, et al. "Wollastonite-Poly(Ethylmethacrylate-Co-Vinylpyrrolydone) Nanostructured Materials: Mechanical Properties and Biocompatibility." Key Engineering Materials 309-311 (May 2006): 1149–52. http://dx.doi.org/10.4028/www.scientific.net/kem.309-311.1149.

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Synthetic pseudowollastonite (psW) and a nanostructured copolymer made of a biostable component, Poly(ethylmethacrylate) (PEMA) and a bioresorbable component, vinylpyrrolidone (VP) are used in this work for the preparation of a new family of bone substitutes that allow osseointegration and mechanical stability. Composites are prepared by bulk polymerization of the desired composition in 15 mm diameter cylindrical plastic moulds. Polymerization was induced thermally at 50°C using 1wt% azobis(isobutyronitrile) (AIBN) as free-radical initiator. The moulds were filled to a height of 100 mm and 1 m

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32

Silva, Ariadne de Souza, Edalmy Oliveira de Almeida, Uilame Umbelino Gomes, José F. Silva, and Indira Aritana Fernandes de Medeiros. "Plasma Sintering of the Steel Reinforced with Nanostructured Carbides." Materials Science Forum 727-728 (August 2012): 456–61. http://dx.doi.org/10.4028/www.scientific.net/msf.727-728.456.

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Particle reinforced metal matrix composites have received considerable interest over many years and continue still under constant development to gain wider industrial applications. New technique of production of carbetos of refractory metals (WC, NbC, TaC, TaxNby) has been developed, synthesizing nanostructured carbides that show improvement of diverse properties of the materials to the gotten ones for the conventional processes. The properties of sintered composites are determined not only by the nature and quality of the raw materials employed but also by microstructure and porosity resultin

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33

de Abreu Martins, Silvana, João Marciano Reis, and Heraldo da Costa Mattos. "Influence of Graphite Powder and Carbon Black Weight Percentages on the Electrical Properties of Epoxy Composite Plates." Materials Science Forum 869 (August 2016): 366–70. http://dx.doi.org/10.4028/www.scientific.net/msf.869.366.

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There is a growing demand for polymeric composite materials, mainly, in industrial applications. For instance, bipolar plates for polymer electrolyte fuel cell in automobile applications. This kind of composite can replace with lower cost and greater efficiency metallic components. The basic requirement is that the composite must possess adequate electrical and mechanical properties for the particular application. The goal of the present paper is to analyze the effect of graphite powder and carbon Black weight percentages on the electrical properties of epoxy composite plates. Electrical condu

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34

Skury, Ana Lúcia Diegues, Guerold Sergueevitch Bobrovinitchii, Marcia G. de Azevedo, and Sérgio Neves Monteiro. "Use of Niobium Oxide as a Binder in the Production of Diamond Nanostructured Composites." Materials Science Forum 727-728 (August 2012): 924–28. http://dx.doi.org/10.4028/www.scientific.net/msf.727-728.924.

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The sintering of nanodiamond powders is of interest for both applied engineering of tool materials and fundamental materials science of nanodisperse covalent-type ceramic materials. It is a accept as a general notion that the driving force for sintering of monophase particles is determined by the level of the surface energy. In the case of diamond nanopowder, this level must be significantly higher which makes sintering a difficult process. This difficulty of sintering is connected with the low diffusive mobility of carbon causing the formation of a graphite structure onto surface of the diamo

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35

Pareta, Rajesh A., Alexander B. Reising, Tiffany Miller, Dan Storey, and Thomas J. Webster. "An understanding of enhanced osteoblast adhesion on various nanostructured polymeric and metallic materials prepared by ionic plasma deposition." Journal of Biomedical Materials Research Part A 9999A (2009): NA. http://dx.doi.org/10.1002/jbm.a.32433.

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Zhang, Lingxia, Jianlin Shi, Jiangtian Li, Zile Hua, and Meiling Ruan. "Carbon nanostructures formed on mesoporous silica by catalytic chemical vapor deposition of ethene." Journal of Materials Research 23, no. 2 (2008): 435–43. http://dx.doi.org/10.1557/jmr.2008.0047.

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Three different strategies, wet impregnation, in situ reduction, and grafting with silane coupling agents, have been used to introduce CoNi nanoparticles with different existing forms into mesoporous silica. These composites were used as catalysts to grow nanostructured carbons by catalytic chemical vapor deposition using ethene. Carbon nanotubes (CNTs) with different inner diameters can grow out of mesoporous silica particles incorporated with CoNi nanoclusters. Many fewer CNTs could be found in the pore channels of the sample prepared by using silane coupling agents than in those of the samp

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Tan, Mei Chee, Dominik J. Naczynski, Prabhas V. Moghe, and Richard E. Riman. "Engineering the Design of Brightly-Emitting Luminescent Nanostructured Photonic Composite Systems." Australian Journal of Chemistry 66, no. 9 (2013): 1008. http://dx.doi.org/10.1071/ch13221.

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Rare-earth doped infrared emitting composites have extensive applications in integrated optical devices such as fibre amplifiers and waveguides for telecommunications, remote sensing, and optoelectronics. In addition, recent advancements in infrared optical imaging systems have expanded the biomedical applications for infrared-emitting composites in diagnosis and imaging of living tissue systems both in vitro and in vivo. Composite systems combine the advantages of polymers (light weight, flexibility, good impact resistance, improved biomedical compatibility, and excellent processability) and

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38

Magina, Sandra, Alisa Rudnitskaya, Sílvia Soreto, Luís Cadillon Costa, Ana Barros-Timmons, and Dmitry V. Evtuguin. "Lignosulfonate-Based Conducting Flexible Polymeric Membranes for Liquid Sensing Applications." Materials 14, no. 18 (2021): 5331. http://dx.doi.org/10.3390/ma14185331.

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In this study, lignosulfonate (LS) from the acid sulfite pulping of eucalypt wood was used to synthesize LS-based polyurethanes (PUs) doped with multiwalled carbon nanotubes (MWCNTs) within the range of 0.1–1.4% w/w, yielding a unique conducting copolymer composite, which was employed as a sensitive material for all-solid-state potentiometric chemical sensors. LS-based PUs doped with 1.0% w/w MWCNTs exhibited relevant electrical conductivity suitable for sensor applications. The LS-based potentiometric sensor displayed a near-Nernstian or super-Nernstian response to a wide range of transition

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Kuzmin, Anton M., Vladimir N. Vodyakov, Alexandr V. Kotin, Vyacheslav V. Kuznetsov, and Mariya I. Murneva. "Study of the Influence of the Forming Method on the Physical and Mechanical Characteristics of Thermoplastic Polymeric Materials." Key Engineering Materials 869 (October 2020): 342–47. http://dx.doi.org/10.4028/www.scientific.net/kem.869.342.

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This paper presents the results of the study of the effect of polymer materials compression and injection methods of molding on the physical and mechanical properties of the resulting samples. Widely used polymers such as poly-amide, thermoplastic elastomer and polyketone were taken as the objects of study. Granite composites based on polyamide were produced by PolyLab Rheomex RTW 16 twin-screw extruder, then modified with fine powders of schungite, graphite and silicon dioxide. Samples for testing in the form of double-sided blades were obtained by injection molding on a Babyplast 6/10V machi

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Wieczorek, Jakub, Agata Blacha-Grzechnik, Jerzy Łabaj, and Grzegorz Siwiec. "Tribological Properties of Polymer Composites Reinforced with Silver Particles." Advanced Materials Research 1036 (October 2014): 65–70. http://dx.doi.org/10.4028/www.scientific.net/amr.1036.65.

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The paper presents results of investigations on a potential for utilisation of waste materials, containing silver powders, ceramics and polymer, for production of PTFE-matrix composites. The waste is a mix of Ag powders (10 – 15%), SiC and Al2O3 powders (20 – 50%) and polymeric powders (20 –50%). For composite production, high-temperature press moulding method was applied. Reinforcing materials and the matrix powder were mixed and subjected to the pressing process in a graphite mould at 350oC. Composite specimens containing 25% Ag, 50% Ag and 75% Ag were obtained. For the obtained composites,

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Zhang, Xiao, Jian Zheng, Yong Qiang Du, and Chun Ming Zhang. "Three-Dimensional Graphite Filled Poly(Vinylidene Fluoride) Composites with Enhanced Strength and Thermal Conductivity." Key Engineering Materials 842 (May 2020): 63–68. http://dx.doi.org/10.4028/www.scientific.net/kem.842.63.

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Three-dimensional (3D) network structure has been recognized as an efficient approach to enhance the mechanical and thermal conductive properties of polymeric composites. However, it has not been applied in energetic materials. In this work, a fluoropolymer based composite with vertically oriented and interconnected 3D graphite network was fabricated for polymer bonded explosives (PBXs). Here, the graphite and graphene oxide platelets were mixed, and self-assembled via rapid freezing and using crystallized ice as the template. The 3D structure was finally obtained by freezing-dry, and infiltra

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Mindivan, Ferda, Meryem Göktaş, and Ali S. Dike. "Mechanical, thermal, and micro‐ and nanostructural properties of polyvinyl chloride/graphene nanoplatelets nanocomposites." Polymer Composites 41, no. 9 (2020): 3707–16. http://dx.doi.org/10.1002/pc.25669.

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Zhang, Yue, Yuting Zhuang, Rui Yin, et al. "A monolayer nanostructure based on polyhedral oligomeric silsesquioxane and graphene oxide for highly efficient separation of hemoglobin." Composites Communications 25 (June 2021): 100702. http://dx.doi.org/10.1016/j.coco.2021.100702.

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Araujo, Andreia, Diogo Vale, Panagiotis-Nektarios Pappas, Nikos Koutroumanis, and Raquel M. Santos. "Challenges and opportunities on nano-enabled multifunctional composites for aerostructures." MATEC Web of Conferences 304 (2019): 01007. http://dx.doi.org/10.1051/matecconf/201930401007.

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The incorporation of carbon-based nanomaterials in the polymeric matrix of carbon fibre reinforced polymer composites has recently received worldwide attention, aiming to enhance their performance and multifunctionality. In this work, different loadings of nanoparticles from the graphene family, including reduced graphene oxide (rGO) and graphene nanoplatelets (GNPs), were produced from graphite exfoliation. The mixing conditions for the production of epoxy-based suspensions were optimized using a three-roll mill, by changing the residence time and hydrodynamic shear stresses. The rheological

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Chiang, Chia Chin. "Investigation of the Curing Residual Stress in Gr/Epoxy Laminated Composites by Using Embedded Fiber Bragg Grating Sensor." Advanced Materials Research 287-290 (July 2011): 357–63. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.357.

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The curing monitoring of the polymeric composite materials has attracted wide interests recently. In order to improve the performance of Gr/Epoxy composites, monitoring the curing process is a demand, especially for the characterization of residual stress after manufacture. The main objective of current research is to explore the application potential of embedded fiber Bragg grating (FBG) to monitor the characterization of the curing process in a Graphite/Epoxy composite. The changes in the shape of the optical spectra, intensity attenuation as well as wavelength shifts in the optical fiber se

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Gibson, Ronald F., Yu Chen, and Hui Zhao. "Improvement of Vibration Damping Capacity and Fracture Toughness in Composite Laminates by the Use of Polymeric Interleaves." Journal of Engineering Materials and Technology 123, no. 3 (2001): 309–14. http://dx.doi.org/10.1115/1.1370385.

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It is shown that, under certain conditions, simultaneous improvement of vibration damping capacity and interlaminar fracture toughness in composite laminates can be achieved by using polymeric interleaves between the composite laminae. The specific case of Mode II interlaminar fracture toughness and flexural damping capacity of interleaved composite laminates is studied. Graphite/epoxy, E-glass/epoxy and E-glass/polyetherimide composite laminates with polymeric interleaves of several different thicknesses and materials were tested using both the end notch flexure (ENF) test for Mode II fractur

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Ionov, Alexander N., Mikhail P. Volkov, Marianna N. Nikolaeva, Ruslan Y. Smyslov, and Alexander N. Bugrov. "The Magnetization of a Composite Based on Reduced Graphene Oxide and Polystyrene." Nanomaterials 11, no. 2 (2021): 403. http://dx.doi.org/10.3390/nano11020403.

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The use of reduced graphene oxide (r-GO) is a promising way of fabricating organic–inorganic composites with unique electrical and magnetic properties. In our work, polystyrene/r-GO composites were synthesized, in which both the components are linked together by covalent bonds. The r-GO used differs from the graphene obtained from graphite through mechanical exfoliation using the ‘scotch tape’ by presenting many structural defects. Binding in the composite structure between the components was confirmed by infrared spectroscopy. Elemental analysis was carried out by energy dispersive X-ray spec

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Pica, Monica, Nicla Messere, Tommaso Felicetti, Stefano Sabatini, Donatella Pietrella, and Morena Nocchetti. "Biofunctionalization of Poly(lactide-co-glycolic acid) Using Potent NorA Efflux Pump Inhibitors Immobilized on Nanometric Alpha-Zirconium Phosphate to Reduce Biofilm Formation." Materials 14, no. 3 (2021): 670. http://dx.doi.org/10.3390/ma14030670.

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Polymeric composites, where bioactive species are immobilized on inorganic nanostructured matrix, have received considerable attention as surfaces able to reduce bacterial adherence, colonization, and biofilm formation in implanted medical devices. In this work, potent in-house S. aureus NorA efflux pump inhibitors (EPIs), belonging to the 2-phenylquinoline class, were immobilized on nanometric alpha-zirconium phosphate (ZrP) taking into advantage of acid-base or intercalation reactions. The ZrP/EPI were used as filler of poly(lactide-co-glycolic acid) (PLGA) to obtain film composites with a h

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Kicko-Walczak, Ewa, and Grażyna Rymarz. "Recent developments in fire-retardant thermoset resins using inorganic-organic hybrid flame retardants." Journal of Polymer Engineering 38, no. 6 (2018): 563–71. http://dx.doi.org/10.1515/polyeng-2017-0224.

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Abstract Inorganic-organic hybrid modifiers have attracted attention of scholars worldwide because they combine the advantages of both different components and provide a way for modifying the structure and properties of polymeric materials. The article describes and investigates a positive effect of reduced flammability of thermoset resins resulting from the use of nanocomposites containing new inorganic-organic hybrid flame retardants (FRs) that combine conventional phosphorous/nitrogen modifiers interacting with nanofillers. The impact of these inhibitors on the level of flammability of ther

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da Luz, Fernanda Santos, Fabio da Costa Garcia Filho, Maria Teresa Gómez del-Río, Lucio Fabio Cassiano Nascimento, Wagner Anacleto Pinheiro, and Sergio Neves Monteiro. "Graphene-Incorporated Natural Fiber Polymer Composites: A First Overview." Polymers 12, no. 7 (2020): 1601. http://dx.doi.org/10.3390/polym12071601.

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A novel class of graphene-based materials incorporated into natural lignocellulosic fiber (NLF) polymer composites is surging since 2011. The present overview is the first attempt to compile achievements regarding this novel class of composites both in terms of technical and scientific researches as well as development of innovative products. A brief description of the graphene nature and its recent isolation from graphite is initially presented together with the processing of its main derivatives. In particular, graphene-based materials, such as nanographene (NG), exfoliated graphene/graphite

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