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Journal articles on the topic 'Polymeric composites Polymeric composites'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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1

Kim, GeunHyung, and Yuri M. Shkel. "Polymeric Composites Tailored by Electric Field." Journal of Materials Research 19, no. 4 (April 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 composites to be locally micro-tailored for a given application. Moreover, materials of literally any composition can be manipulated. In this article we present testing results for compositions of graphite and ceramic particles as well as glass fibers in epoxy. Electrical and rheological interactions of inclusions in a liquid epoxy are discussed. Measurements of tensile modulus and ultimate strength of epoxy composites having different microstructure of 10 vol% graphite, ceramic particles and glass fiber are presented.

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2

Kim, Jin Woo, Jung Ju Lee, and Dong Gi Lee. "Effect of Fiber Orientation on the Tensile Strength in Fiber-Reinforced Polymeric Composite Materials." Key Engineering Materials 297-300 (November 2005): 2897–902. http://dx.doi.org/10.4028/www.scientific.net/kem.297-300.2897.

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The study for strength calculation of one way fiber-reinforced composites and the study measuring precisely fiber orientation distribution were presented. However, because the DB that can predict mechanical properties of composite material and fiber orientation distribution by the fiber content ratio was not constructed, we need the systematic study for that. Therefore, in this study, we investigated what effect the fiber content ratio and fiber orientation distribution have on the strength of composite sheet after making fiber reinforced polymeric composite sheet by changing fiber orientation distribution with the fiber content ratio. The result of this study will become a guide to design data of the most suitable parts design or fiber reinforced polymeric composite sheet that uses the fiber reinforced polymeric composite sheet in industry spot, because it was conducted in terms of developing products. We studied the effect the fiber orientation distribution has on tensile strength of fiber reinforced polymeric composite material and achieved this results below. We can say that the increasing range of the value of fiber reinforced polymeric composite’s tensile strength in the direction of fiber orientation is getting wider as the fiber content ratio increases. It shows that the value of fiber reinforced polymeric composite’s tensile strength in the direction of fiber orientation 90° is similar with the value of polypropylene’s intensity when fiber orientation function is J= 0.7, regardless of the fiber content ratio. Tensile strength of fiber reinforced polymeric composite is affected by the fiber orientation distribution more than by the fiber content ratio.

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3

Lee, Hanbin, Nam Kyeun Kim, Daeseung Jung, and Debes Bhattacharyya. "Flammability Characteristics and Mechanical Properties of Casein Based Polymeric Composites." Polymers 12, no. 9 (September 12, 2020): 2078. http://dx.doi.org/10.3390/polym12092078.

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Even though casein has an intrinsic potential ability to act as a flame retardant (FR) additive, the research regarding the FR performance of casein filled polymeric composites has not been thoroughly conducted. In the present work, two commercial casein products, such as lactic casein 720 (LAC) and sodium casein 180 (SC), were chosen to investigate their effects on the performances of the polypropylene (PP) composites. The melt compounding and compression moulding processes were employed to fabricate these casein-based composites. Ammonium polyphosphate (APP) was also selected to explore its combined effects in conjunction with casein on the composite’s flammability. The cone calorimeter results showed that the addition of casein significantly reduced (66%) the peak heat release rate (PHRR) of the composite compared to that of neat PP. In particular, the combination of LAC and APP led to the formation of more compact and rigid char compared to that for SC based sample; hence, a further reduction (80%) in PHRR and self-extinguishment under a vertical burn test were accomplished. Moreover, the tensile modulus of the composite improved (23%) by the combined effects of LAC and APP. The overall research outcome has established the potential of casein as a natural protein FR reducing a polymer’s flammability.

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Qi, Ben, and Michael Bannister. "Mechanical Performance of Carbon/Epoxy Composites with Embedded Polymeric Films." Key Engineering Materials 334-335 (March 2007): 469–72. http://dx.doi.org/10.4028/www.scientific.net/kem.334-335.469.

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This paper presents experimental results on the mechanical performance of advanced carbon/epoxy composites with embedded polymeric films. The composite laminates with polymeric films, which are potentially used as a sensor/actuator carrier for structural health monitoring applications, were investigated under various mechanical loadings including low velocity impact, single lap shear and short beam shear. The preliminary work showed that embedment of those polymeric films does not degrade, but could significantly improve, the mechanical properties of the composite laminates.

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OPRAN, Constantin Gheorghe, Cătălina Bivolaru, and Diana Murar. "Researches Concerning Structural and Mechanical Behavior of Sandwich Composite Polymeric Products." Key Engineering Materials 498 (January 2012): 151–60. http://dx.doi.org/10.4028/www.scientific.net/kem.498.151.

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The sandwich composite polymeric products have a wide utilization in various fileds like aircraft and automotive construction, load bearing structures, sports equipment, more specifically, wherever weight-saving is required. Sandwich composites polymeric products represent excellent examples of the potential offered by composite materials. The combination of two composite faces and a lightweight polystyrene core allows obtaining a high flexural stiffness with a weak mass. This paper deals with the analysis of the structural and mechanical behavior properties of the core, adhesive and faces, for sandwich composite polymeric products. There are also presented the investigation results on how different specific factors like: mechanical and structural behavior, interface between the faces and core, constant force resistance in time, the reinforcing elements (fiber glass), the polyester core do influence the machinability of sandwich composites polymeric products..

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6

Kužel, R., I. Kǐivka, J. Kubát, J. Prokeš, S. Nešpůek, and C. Klason. "Multi-component polymeric composites." Synthetic Metals 67, no. 1-3 (November 1994): 255–61. http://dx.doi.org/10.1016/0379-6779(94)90052-3.

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7

Chambers, D. L., K. A. Taylor, C. T. Wan, and A. J. Emrick. "Sputtering on polymeric composites." Surface and Coatings Technology 41, no. 3 (June 1990): 315–23. http://dx.doi.org/10.1016/0257-8972(90)90142-y.

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8

Mang, Thomas, and Friedhelm Haulena. "Recycling of polymeric composites." Macromolecular Symposia 135, no. 1 (December 1998): 147–56. http://dx.doi.org/10.1002/masy.19981350117.

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9

Majer, Zdeněk, Pavel Hutař, and Zdeněk Knésl. "Crack Behaviour in Polymeric Composites: The Influence of Particle Shape." Key Engineering Materials 465 (January 2011): 564–67. http://dx.doi.org/10.4028/www.scientific.net/kem.465.564.

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In this paper polymeric particulate composites are studied (especially polypropylene (PP) matrix stuffed by rigid mineral fillers). Presently, polymeric particulate composites are frequently used in many engineering applications. The composite was modeled as a three-phase continuum – matrix, interphase and particle. The properties of the particles (size, shape) have a significant effect on the global behaviour of the composite. On the basis of fracture mechanics methodology the interaction of micro-crack propagation in the matrix filled by rigid particles covered by the interphase was analyzed. The effect of the composite structure on their mechanical properties is studied here from the theoretical point of view.

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10

Kim, Byung Sun, and Terry F. Lehnhoff. "Polymeric Composite Tube Fabrication." Journal of Engineering Materials and Technology 117, no. 2 (April 1, 1995): 235–37. http://dx.doi.org/10.1115/1.2804535.

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An aluminum mold was designed for fabrication of research quality composite tubes on a hot press (miniclave). This mold allows the pressure to be applied uniformly to the inner surface of a composite (prepreg tape) tube while a constant vacuum is also applied independently to the composite throughout the course of fabrication. With proper placement of stoppers and spacers inside the mold, various types of high quality unidirectional composites with fibers oriented either in the zero or 90 degree directions, respectively, were fabricated on a hot press. The mold design had less resin loss throughout fabrication compared to a conventional tubular mold. Physical and material tests have characterized the superior qualities of the resulting composite tubes.

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11

Valášek, P., M. Müller, and A. Proshlyakov. "Effect of sedimentation on the final hardness of polymeric particle composites." Research in Agricultural Engineering 58, No. 3 (August 16, 2012): 92–98. http://dx.doi.org/10.17221/5/2011-rae.

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In present days composite materials are the indispensable part of many branches. They make a foray into the branch of agricultural production, where they are getting to intensive development of systems utilized e.g. at soil processing. Composites can be defined as materials which synergically combine properties of matrix and filler. One of possibilities of polymeric particle composites preparation is the application of suitable filler together with some types of epoxy resins. This application extends the usable properties of resins. For the exact definition of these materials use it is necessary to map their behaviour. In the paper the problems are described, which concern the composite hardness changes as a consequence of the filler particle sedimentation in the course of the resin curing. The composite matrix was the two-component epoxy resin and the filler were chips of materials cutting process. The use of waste filler suggests itself the ecological possibility of recycling, which should be preferred in consideration to the environment friendliness.

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12

Sizochenko, Natalia, and Jerzy Leszczynski. "Drug-Nanoparticle Composites." Journal of Nanotoxicology and Nanomedicine 2, no. 1 (January 2017): 1–10. http://dx.doi.org/10.4018/jnn.2017010101.

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Polymeric nanoparticles represent attractive targets for the controlled delivery of therapeutic drugs. Drug-nanoparticle conjugates are convenient targets to enhance solubility and membrane permeability of drugs, prolong circulation time and minimize non-specific uptake. The behavior of drugs-loaded nanoparticles is governed by various factors. Understanding of these effects is very important for design of drug-nanoparticle systems, that could be suitable for treating the particular diseases. The aim of the current study is a complementary molecular docking followed by quantitative structure-activity relationships modeling for drugs payload on polymeric nanoparticles. Twenty-one approved drugs were considered. Docking of drugs was performed towards a simplified polymeric surface. Binding energies agreed well with the observed mass loading. Quantitative structure-activity relationships model supported this data. Effects of electronegativity and hydrophobicity were discussed. Developed model may contribute to the development of other useful nano-sized polymeric drug carriers to deliver a spectrum of therapeutic and imaging agents for medical purposes.

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13

Ouyang, Xin, Peng Cao, Weijun Zhang, Zhuofeng Liu, Zhaohui Huang, and Wei Gao. "CaCu3Ti4O12–PVDF polymeric composites with enhanced capacitive energy density." International Journal of Modern Physics B 29, no. 10n11 (April 23, 2015): 1540003. http://dx.doi.org/10.1142/s0217979215400032.

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CaCu 3 Ti 4 O 12 (CCTO)–poly(vinylidene fluoride (PVDF)) composites were prepared by melt blending and hot molding techniques. The addition of CCTO remarkably enhanced the dielectric properties and the thermal conductivity of PVDF composites, while the melting point of the PVDF composites (~170°C) was almost independent of the CCTO concentration. Based on the results of dielectric constant and dielectric breakdown voltage, the PVDF composite containing 40 vol.% CCTO fillers shows the optimized capacitive energy storage potential (7.81 J/cm3).

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14

Ziąbka, Magdalena, and Michał Dziadek. "Surface Properties of Polymeric Composites with Silver Nanoparticles." Fibres and Textiles in Eastern Europe 26, no. 6(132) (December 31, 2018): 114–19. http://dx.doi.org/10.5604/01.3001.0012.5169.

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The aim of this study was to investigate the surface properties of polymeric composites and the osteoblastic cell behaviour set in direct contact with the biomaterials tested. The surface properties were evaluated before and after 6-month incubation in an in vitro environment. The composite materials were prepared by means of extrusion and injection moulding. Three commercially available thermoplastic polymers (ABS (poly)acrylonitrile butadiene styrene) were used as composite matrices. Antibacterial silver nanoparticles (AgNPs) were added as a modifying phase. Surface properties of the materials tested, such as: wettability, roughness and microstructure, were determined. Furthermore the morphology of Saos-2 human osteoblastic cells in direct contact with the composite materials was assessed after the 7-day culture. The addition of silver nanoparticles caused minor changes in the wettability and roughness values. As light modification, the silver nanoparticles influenced the microstructure. The osteoblasts displayed the proper morphology and they evenly settled on the surface of the pure polymer and composite materials, which indicated the material cytocompatibility.

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15

Pinto, K. N. C., and J. L. Rossi. "Recycling of Polymeric Matrix Composites." Materials Science Forum 416-418 (February 2003): 444–48. http://dx.doi.org/10.4028/www.scientific.net/msf.416-418.444.

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16

Song, Sangyup, Hyunaee Chun, Minsoo Joo, and Nakjoong Kim. "Chromophores for Polymeric Photorefractive Composites." Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals 349, no. 1 (September 2000): 55–58. http://dx.doi.org/10.1080/10587250008024864.

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17

Luo, Xiaofan, and Patrick T. Mather. "Triple-Shape Polymeric Composites (TSPCs)." Advanced Functional Materials 20, no. 16 (July 1, 2010): 2649–56. http://dx.doi.org/10.1002/adfm.201000052.

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18

Vetrova, A. M., O. N. Klenovich, M. P. Badryzlova, A. P. Sineokov, and O. G. Zhdanova. "Polymeric composites for repair purposes." Polymer Science Series C 49, no. 1 (March 2007): 56–59. http://dx.doi.org/10.1134/s1811238207010134.

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19

Hassan, N. M., and R. C. Batra. "Modeling damage in polymeric composites." Composites Part B: Engineering 39, no. 1 (January 2008): 66–82. http://dx.doi.org/10.1016/j.compositesb.2007.02.001.

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20

Qutubuddin, S., C. S. Lin, and Y. Tajuddin. "Novel polymeric composites from microemulsions." Polymer 35, no. 21 (October 1994): 4606–10. http://dx.doi.org/10.1016/0032-3861(94)90810-9.

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21

Reifsnider, K. L. "Micromechanical modelling of polymeric composites." Polymer 35, no. 23 (November 1994): 5035–40. http://dx.doi.org/10.1016/0032-3861(94)90660-2.

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22

BLEDZKI, ANDRZEJ K., STANISLAWA SPYCHAJ, and ALICJA KWASEK. "Microspheres as fillers for polymeric composites. Part I. Application of microspheres to polymeric composites." Polimery 30, no. 03 (March 1985): 97–101. http://dx.doi.org/10.14314/polimery.1985.097.

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23

Gusev, Konstantin, Vjaceslavs Gerbreders, Andrejs Ogurcovs, and Vladimir Solovyev. "STRUCTURE AND MECHANICAL PROPERTIES OF POLYMERIC COMPOSITES WITH CARBON NANOTUBES." ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 3 (June 20, 2019): 48. http://dx.doi.org/10.17770/etr2019vol3.4052.

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Experimental investigations of single-wall carbon nanotubes (CNT) effect on the mechanical properties of polymeric composite materials based on epoxy matrix have been carried out. It has been found that addition of CNT at low concentration dramatically increases tensile strength (20 – 30 per cent growth) and Young’s modulus of the samples under study. Structure of polymeric composites with CNT was characterized by atomic force microscopy (AFM) and scanning electron microscopy (SEM). AFM images of the samples under study confirm strong interaction between polymeric matrix and nano-additives, demonstrating intimate contact between CNT and epoxy surroundings which is of great importance for composite material reinforcement. Dependences of tensile strength and those of Young’s modulus on CNT concentration are discussed using micromechanics models for nanocomposites.

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24

Sulyman, Ebtehag, and Noaman Sulyman. "Preparation of Polymeric Composites from Polypropylene and Palm Fronds and the Study of Some of Their Physical Properties." Baghdad Science Journal 17, no. 3 (September 1, 2020): 0772. http://dx.doi.org/10.21123/bsj.2020.17.3.0772.

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Abstract: In this study a type of polymeric composites from melting poly propylene as a basic substance with Palm fronds powder were prepared. Evaluation of polymeric composites was done by studying some of it is mechanical properties, which included:Yong modulus (E), Impact Strength (I.S), Brinell hardness (B.H) and Compression Strength (C.S). The polymeric composites were studied before and after reinforcment by comparing between them. There was an increase in resistance of Yong modulus (E), Impact Strength (I.S), Brinell hardness (B.H) and compression Strength (C.S). Also, the effect of some acids were studied such as (HCl, H2SO4, HNO3) with concentrations of (0.5N; 1N and 1.5N) respectively. The physical properties of absorbance and poly propylene's diffusion coefficient were studied before and after reinforcment, The results showed an increase in values of these properties with increasing concentration of acid and time of polymer's immersion in the acidic solution.

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Зубарев, Юрий, Yuriy Zubarev, Александр Приемышев, and Alexsandr Priyomyshev. "Chips formation peculiarities at polymeric composite processing." Science intensive technologies in mechanical engineering 2019, no. 8 (August 16, 2019): 36–40. http://dx.doi.org/10.30987/article_5d2635cb77dfd6.90010587.

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A scheme of an equilibrium position of cutting force constituents at orthogonal cutting is shown and a role of each force constituent during cutting is defined. An analysis of chips formation peculiarities is presented at the edge processing of polymeric composites. The results obtained can assess potentialities of physical models at polymeric composite blank cutting.

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Condruz, Mihaela, Alexandru Paraschiv, Cristian Puşcaşu, and Ionuţ Sebastian Vintilă. "Tensile behavior of humid aged advanced composites for helicopter external fuel tank development." MATEC Web of Conferences 145 (2018): 02004. http://dx.doi.org/10.1051/matecconf/201814502004.

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Influence of humid aging on tensile properties of two polymeric composites was studied. The purpose of the study was to evaluate the suitability of the materials for a naval helicopter external fuel tank. Due to the application, the humid environment was kerosene and saline solution to evaluate the sea water effect on the composite tensile strength. The composite samples were immersed in kerosene for 168 hours, respective 1752 hours and in saline solution for 168 hours. Tensile tests were performed after the immersion. The composite sample tensile tests showed that kerosene and saline solution had no influence on the elastic modulus of the materials, but it was observed a slight improvement of the tensile strength of the two polymeric composites.

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27

Zanrosso, Crissie D., Sandra M. Miranda, Batuira M. da Costa Filho, Jonathan C. Espíndola, Diego Piazza, Vítor J. P. Vilar, and Marla A. Lansarin. "ZnO Polymeric Composite Films for n-Decane Removal from Air Streams in a Continuous Flow NETmix Photoreactor under UVA Light." Nanomaterials 11, no. 8 (July 31, 2021): 1983. http://dx.doi.org/10.3390/nano11081983.

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Polymeric composite films have been explored for many photocatalytic applications, from water treatment to self-cleaning devices. Their properties, namely, thickness and porosity, are controlled mainly by the preparation conditions. However, little has been discussed on the effect of thickness and porosity of polymeric composite films for photocatalytic processes, especially in gas phase. In the present study, different preparation treatments of ZnO-based polymeric composite films and their effects on its performance and stability were investigated. The polymeric composites were prepared by solution mixing followed by non-solvent induced phase separation (NIPS), using poly(vinylidene fluoride) (PVDF) as the matrix and ZnO-based photocatalysts. Different wet thickness, photocatalyst mass, and treatments (e.g., using or not pore-forming agent and compatibilizer) were assessed. A low ZnO/PVDF ratio and higher wet thickness, together with the use of pore-forming agent and compatibilizer, proved to be a good strategy for increasing photocatalytic efficiency given the low agglomerate formation and high polymer transmittance. Nonetheless, the composites exhibited deactivation after several minutes of exposure. Characterization by XRD, FTIR-ATR, and SEM were carried out to further investigate the polymeric film treatments and stability. ZnO film was most likely deactivated due to zinc carbonate formation intensified by the polymer presence.

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28

Müller, M., J. Žarnovský, and R. Drlička. "Recycling of Polyamide from Scrap Tyres as Polymeric Composites." Research in Agricultural Engineering 61, Special Issue (June 2, 2016): S79—S83. http://dx.doi.org/10.17221/51/2015-rae.

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Rubber granulate, metal waste and textile waste (polyamide fibres) come into the mechanical process of waste tyres recycling. The pollution and degradation processes are problematic in using of secondary raw material. The matrix was in the form of three various adhesives in testing – two-component epoxy adhesives and a polyester adhesive. The filler was in the form of textile waste (polyamide fibres) from the process of tyres recycling containing approximately 10–12% of rubber granulate. The filler was added in app. 15% of weight ratio into the matrix. The aim of the research was to determine a possible utilisation of unsorted textile waste from the process of tyres recycling in the area of polymeric composite systems.

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29

Suriani, M. J., S. M. Sapuan, C. M. Ruzaidi, J. Naveen, H. Syukriyah, and M. Ziefarina. "Correlation of manufacturing defects and impact behaviors of kenaf fiber reinforced hybrid fiberglass/Kevlar polyester composite." Polimery 66, no. 1 (January 20, 2021): 30–35. http://dx.doi.org/10.14314/polimery.2021.1.4.

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In this study, the impact properties of kenaf fibre reinforced hybrid fiberglass/Kevlar polymeric composite was investigated. In this study, a new fiber arrangement based on kenaf bast fiber as reinforcement to the hybrid fiberglass/Kevlar fiber and polyester as matrix used to fabricate the hybrid polymeric composite. Five different types of samples with different of kenaf fiber content based on volume fraction (0, 15, 45, 60 and 75%) to hybrid fiberglass/Kevlar polymer composites were manufactured. 0% of kenaf fiber has been used as control sample. The results showed that hybridization has improved the impact properties. These results were further supported through SEM micrograph of the manufacturing defects of the polymer composite. Based on literature work, manufacturing defects that occurs in composite system reduced the mechanical properties of the material. Therefore, in this research the correlation of impact behaviors and manufacturing defects of kenaf fiber reinforced hybrid fiberglass/Kevlar polymeric composite has been successfully done. As conclusion, the highest manufacturing defects determined in the composites during the fabrication significantly lowest the results of impact behavior.

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30

Salin, Irene, and James C. Seferis. "Anisotropic degradation of polymeric composites: From neat resin to composite." Polymer Composites 17, no. 3 (June 1996): 430–42. http://dx.doi.org/10.1002/pc.10631.

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31

Imran Shaban, Bhatti, and Yan Zhao. "Hygrothermal Ageing Modeling and Numerical Testing of Unidirectional Polymeric Composites." Advanced Materials Research 989-994 (July 2014): 634–37. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.634.

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Moisture severely affects aerospace structures and offshore platforms during their service life span. It deteriorates the mechanical performance of polymeric composites through long term and cyclic hygrothermal ageing. This reduction in mechanical performance must be considered during product design to ensure long-term structure endurance. In order to decide the long-term moisture effects on composite components, they are exposed to a rapid moisture conditioning. Presently the available qualified methodologies allowing only simple geometry and an assumption that diffusivity rates are independent of the flow path or direction. Therefore a more advanced finite element method is required. In this research work the finite-element analysis was performed to study the moisture diffusion in unidirectional composites. The final goal for this study was to determine the exposure time for rapid moisture conditioning that produces the most accurate moisture distribution in composite laminates.

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32

Babu, Karthik, Oisik Das, Vigneshwaran Shanmugam, Rhoda Afriye Mensah, Michael Försth, Gabriel Sas, Ágoston Restás, and Filippo Berto. "Fire Behavior of 3D-Printed Polymeric Composites." Journal of Materials Engineering and Performance 30, no. 7 (March 30, 2021): 4745–55. http://dx.doi.org/10.1007/s11665-021-05627-1.

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Abstract3D printing or additive manufacturing (AM) is considered as a flexible manufacturing method with the potential for substantial innovations in fabricating geometrically complicated structured polymers, metals, and ceramics parts. Among them, polymeric composites show versatility for applications in various fields, such as constructions, microelectronics and biomedical. However, the poor resistance of these materials against fire must be considered due to their direct relation to human life conservation and safety. In this article, the recent advances in the fire behavior of 3D-printed polymeric composites are reviewed. The article describes the recently developed methods for improving the flame retardancy of 3D-printed polymeric composites. Consequently, the improvements in the fire behavior of 3D-printed polymeric materials through the change in formulation of the composites are discussed. The article is novel in the sense that it is one of the first studies to provide an overview regarding the flammability characteristics of 3D-printed polymeric materials, which will further incite research interests to render AM-based materials fire-resistant.

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Wang, Ming Wen. "Alignment and Surface Modification of Multiwall Carbon Nanotubes Polymeric Composites." Advanced Materials Research 881-883 (January 2014): 872–81. http://dx.doi.org/10.4028/www.scientific.net/amr.881-883.872.

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Polymer matrices add carbon nanotubes have significantly improved mechanical and electrical properties at very low carbon nanotube loading. That mechanical and electrical properties of aligned composites are better than those of random ones has been demonstrated in past studies. The non-conductive barriers of surface contaminants and weakly bound polymer layers will deform on the surface of composite resulted from the effects of micro gravity and oxidization. Addition of the adaptive plasma modification makes improvement in the surface properties of the composites is necessary. In this study, we actively align and network multiwall carbon nanotubes (MWCNTs) in a polymer matrix, then adopt O2/CF4radio frequency (RF) plasma to modify the surface of polymeric composite. MWCNTs were aligned using an AC electric field to elicit dipolar interactions among the nanotubes in a viscous matrix following immobilization by curing under continuous application of an anisotropic electric field, and the barriers of surface contaminants and weakly bound polymer layers can be reduced to the smallest degree or eliminated by RF plasma modification. Consequently, the MWCNTs polymeric composite amplify the flexural modulus, wear resistance, and electrical conductivity in the reality.

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Venetis, J., and E. Sideridis. "A Theoretical Consideration on the Estimation of Interphase Poisson’s Ratio for Fibrous Polymeric Composites." Journal of Applied Mathematics 2018 (October 1, 2018): 1–9. http://dx.doi.org/10.1155/2018/3196569.

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An analytical approach on the evaluation of interphase Poisson’s ratio for fibrous composites, consisting of polymeric matrix and unidirectional continuous fibers, is performed. The simulation of the microstructure of the composite was carried out by means of a modified form of Hashin-Rosen cylinder assemblage model. Next, by the use of this three-phase model the authors impose some limitations to the polynomial variation laws which are commonly adopted to approximate the thermomechanical properties of the interphase layer of this type of polymeric composites and then propose an nth-degree polynomial function to approximate the Poisson’s ratio of this layer.

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Van der Laan, H. L., S. L. Zajdowicz, K. Kuroda, B. J. Bielajew, T. A. Davidson, J. Gardinier, D. H. Kohn, et al. "Biological and Mechanical Evaluation of Novel Prototype Dental Composites." Journal of Dental Research 98, no. 1 (September 6, 2018): 91–97. http://dx.doi.org/10.1177/0022034518795673.

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The breakdown of the polymeric component of contemporary composite dental restorative materials compromises their longevity, while leachable compounds from these materials have cellular consequences. Thus, a new generation of composite materials needed to be designed to have a longer service life and ensure that any leachable compounds are not harmful to appropriate cell lines. To accomplish this, we have developed concurrent thiol-ene-based polymerization and allyl sulfide–based addition-fragmentation chain transfer chemistries to afford cross-linked polymeric resins that demonstrate low shrinkage and low shrinkage stress. In the past, the filler used in dental composites mainly consisted of glass, which is biologically inert. In several of our prototype composites, we introduced fluorapatite (FA) crystals, which resemble enamel crystals and are bioactive. These novel prototype composites were benchmarked against similarly filled methacrylate-based bisphenol A diglycidyl ether dimethacrylate / triethylene glycol dimethacrylate (bisGMA/TEGDMA) composite for their cytotoxicity, mechanical properties, biofilm formation, and fluoride release. The leachables at pH 7 from all the composites were nontoxic to dental pulp stem cells. There was a trend toward an increase in total toughness of the glass-only-filled prototype composites as compared with the similarly filled bisGMA/TEGDMA composite. Other mechanical properties of the glass-only-filled prototype composites were comparable to the similarly filled bisGMA/TEGDMA composite. Incorporation of the FA reduced the mechanical properties of the prototype and bisGMA/TEGDMA composite. Biofilm mass and colony-forming units per milliliter were reduced on the glass-only-filled prototype composites as compared with the glass-only-filled bisGMA/TEGDMA composite and were significantly reduced by the addition of FA to all composites. Fluoride release at pH 7 was greatest after 24 h for the bisGMA/TEGDMA glass + FA composite as compared with the similarly filled prototypes, but overall the F- release was marginal and not at a concentration to affect bacterial metabolism.

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36

Шешин, Evgeniy Sheshin, Денисова, and Lyubov Denisova. "RADIATION MODIFYING OF COMPOSITE MATERIALS IN CASE OF GAMMA IRRADIATION." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 1, no. 12 (November 11, 2016): 170–73. http://dx.doi.org/10.12737/22802.

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In work researches of mechanisms of radiation oxidation of polymeric composites on the basis of the lead of polystyrene (PS-SS) and polyethylene (PE-SS) filled silikanaty are conducted. In case of gamma irradiation of the filled polymeric composite to growth of an integrated dose there is an increase both concentration of radicals, and content of products of destruction. Depending on an integrated dose and type a polymeric composite also nature of accumulating of radicals changes. So for PS-SS to D = 600 кГр the alkil of R-radical to peroxide of RO2-constitutes the share relation R-/RO2-=2,50 whereas in case of an identical dose increases in PE-SS for RO2 radical (R/RO2=0,83). In case of the maximum concentration of radicals in a reaktoplasts the relation of R/RO2-even more decreases - to 0,67. It is established that in case of rather high values of capacity of a dose extreme value (at most) on dose dependence of change of concentration of macroradicals (R-and RO2-) in the researched composites won´t be shown. The nature of the arising macroradicals like R-and RO2-is closely connected as with kinetics of radical reactions in case of -radiation, and structural and mechanical, diffusive characteristics and type of a polymeric composite.

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37

Martynyuk, G. V., and O. I. Aksimentyeva. "Features of charge transport in polymer composites polymethylmethacrylate - polyaniline." Physics and Chemistry of Solid State 21, no. 2 (June 15, 2020): 319–24. http://dx.doi.org/10.15330/pcss.21.2.319-324.

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The influence of polymer matrix of polymethyl methacrylate (PMMA) on the specific conductivity, percolation threshold, energy of activation of charge transport in polymer composites PMMA − polyaniline (PAN) was studied. Concentration dependence of the electrical conductivity of composites reveals percolation behavior with the low value of percolation threshold within 2 % content of polyaniline. It is found that in the polymer composites PMMA - PAN the specific conductivity increases by more than 8−9 orders of magnitude compared to the original matrix. On the base of temperature dependence of the specific conductivity of the obtained composites, it is concluded that PMMA polymer matrix does not change the semiconductor nature of PAN conductivity in the composite but effects on the activation parameters of the charge transport. From ESR spectra, it found that the presence of a polymeric matrix causes significant delocalization of the charge along the macrochains of the dielectric polymeric matrix.

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38

Moszner, Norbert, and Ulrich Salz. "New developments of polymeric dental composites." Progress in Polymer Science 26, no. 4 (May 2001): 535–76. http://dx.doi.org/10.1016/s0079-6700(01)00005-3.

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39

Apicella, Antonio, Raffaella Aversa, and Florian Ion Tiberiu Petrescu. "Hybrid Ceramo-Polymeric Nano-Diamond Composites." American Journal of Engineering and Applied Sciences 11, no. 2 (February 1, 2018): 766–82. http://dx.doi.org/10.3844/ajeassp.2018.766.782.

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40

Omastová, Mária, Silvia Podhradská, Jan Prokeš, Ivica Janigová, and Jaroslav Stejskal. "Thermal ageing of conducting polymeric composites." Polymer Degradation and Stability 82, no. 2 (January 2003): 251–56. http://dx.doi.org/10.1016/s0141-3910(03)00218-0.

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41

Levi, O., S. Shalom, I. Benjamin, G. Perepelitsa, A. J. Agranat, R. Neumann, Y. Avny, and D. Davidov. "Conjugated Polymeric Composites for Holographic Storage." Synthetic Metals 102, no. 1-3 (June 1999): 1178–81. http://dx.doi.org/10.1016/s0379-6779(98)00310-5.

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42

Bánhegyi, György, Páter Hedvig, Zoran S. Petrović, and Frank E. Karasz. "Applied Dielectric Spectroscopy of Polymeric Composites." Polymer-Plastics Technology and Engineering 30, no. 2-3 (April 1991): 183–225. http://dx.doi.org/10.1080/03602559108020136.

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43

Fancey, Kevin S., and Adnan Fazal. "Prestressed polymeric matrix composites: Longevity aspects." Polymer Composites 37, no. 7 (February 21, 2015): 2092–97. http://dx.doi.org/10.1002/pc.23387.

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44

Chou, Tsu-Wei, S. Leigh Phoenix, and John A. Nairn. "The micromechanical modeling of polymeric composites." JOM 48, no. 9 (September 1996): 53–57. http://dx.doi.org/10.1007/bf03223075.

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45

Duratti, L., L. Salvo, D. Landru, and Y. Bréchet. "Selecting the Components of Polymeric Composites." Advanced Engineering Materials 4, no. 6 (June 5, 2002): 367–71. http://dx.doi.org/10.1002/1527-2648(20020605)4:6<367::aid-adem367>3.0.co;2-7.

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46

Darowicki, K., and S. Janicki. "Electrochemical investigations of modified polymeric composites." Materials and Corrosion 51, no. 12 (December 2000): 835–40. http://dx.doi.org/10.1002/1521-4176(200012)51:12<835::aid-maco835>3.0.co;2-3.

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47

Fazylova, Dina I., and Lubov A. Zenitova. "Polymeric Composites for Filling Bone Cavities." Key Engineering Materials 869 (October 2020): 419–23. http://dx.doi.org/10.4028/www.scientific.net/kem.869.419.

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Polymer composite materials (PCМ) based on low molecular weight siloxane rubber SKTN-A have been developed, which are supposed to be used as osteoplastic materials in maxillofacial surgery. The following materials were used as fillers for the creation of PCM: bentonite, sepiolite, wollastanite. The effect of the type and content of filler on the curing process and the properties of the resulting compositions was investigated.

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48

Tsai, Jialin, and C. T. Sun. "Dynamic compressive strengths of polymeric composites." International Journal of Solids and Structures 41, no. 11-12 (June 2004): 3211–24. http://dx.doi.org/10.1016/j.ijsolstr.2003.12.010.

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49

González-Henríquez, C. M., E. A. Soto-Bustamante, R. O. Vergara-Toloza, and W. Haase. "Light sensitive achiral polar polymeric composites." Chemical Physics Letters 510, no. 4-6 (July 2011): 212–19. http://dx.doi.org/10.1016/j.cplett.2011.05.048.

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Rusen, Edina, Toma Doina, Alexandra Mocanu, Viorica Meltzer, Elena Pincu, Alina Popescu, Laura Chirila, Ioan Calinescu, and Aurel Diacon. "New polymeric composites for heat transfer." Colloid and Polymer Science 293, no. 9 (June 23, 2015): 2593–98. http://dx.doi.org/10.1007/s00396-015-3656-y.

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