The thermal degradation and dynamic mechanical properties modeling of MWCNT/glass fiber multiscale filler reinforced polypropylene composites
Publication date: Available online 17 November 2018Source: Composites Science and TechnologyAuthor(s): N. Rasana, K. Jayanarayanan, B.D.S. Deeraj, K. JosephAbstractThe present work is focused to explore the influence of multiscale fillers (nano scale multiwalled carbon nanotubes (MWCNTs) and micro scale Glass fibers) on the thermal degradation and dynamic mechanical properties of polypropylene (P). MWCNTs weight fraction was varied up to 5 wt% for a fixed glass fiber fraction of 20 wt% and the resultant composite was characterized using X-ray diffraction, Scanning and Transmission Electron Microscopy. Hybrid composites...
Source: Composites Science and Technology - November 18, 2018 Category: Science Source Type: research

Quantitatively identify and understand the interphase of SiO2/rubber nanocomposites by using nanomechanical mapping technique of AFM
This study provides a simple method to identify and deeply understand the double layer structure of the interphase, and thus provides guidance for the design of interphase for the preparation of high performance rubber nanocomposites. (Source: Composites Science and Technology)
Source: Composites Science and Technology - November 17, 2018 Category: Science Source Type: research

Carbon nanotubes-bridged-fumed silica as an effective binary nanofillers for reinforcement of silicone elastomers
Publication date: Available online 17 November 2018Source: Composites Science and TechnologyAuthor(s): Junhua Kong, Jiaotong Sun, Yuejin Tong, Qingqing Dou, Yuefan Wei, Warintorn Thitsartarn, Chee Chuan Yeo Jayven, Chaobin HeAbstractThe incorporation of nanofillers into polymeric matrix has been proven to be an effective route to reinforce their mechanical properties, and the usage of binary fillers that combines the advantages of the two fillers could lead to further property enhancement. In this work, binary nanofillers consist of multi-walled carbon nanotubes (MWCNTs)-bridged fumed silica (FSiO2) were synthesized for th...
Source: Composites Science and Technology - November 17, 2018 Category: Science Source Type: research

Effect of graphene oxide-carbon nanotube hybrid filler on the mechanical property and thermal response speed of shape memory epoxy composites
Publication date: Available online 17 November 2018Source: Composites Science and TechnologyAuthor(s): Enliang Wang, Yubing Dong, MD Zahidul Islam, Laiming Yu, Fuyao Liu, Shuaijie Chen, Xiaoming Qi, Yaofeng Zhu, Yaqin Fu, Zhaohe Xu, Ning HuAbstractShape memory polymers (SMPs) will come to act an indispensable part in numerous aspects of human activity. However, the low mechanical strengths and thermal conductivities of SMPs have largely restricted their applications. Remarkable improvements in the mechanical properties and thermal conductivities of SMPs via introducing thermal conductivity fillers have been achieved, thoug...
Source: Composites Science and Technology - November 17, 2018 Category: Science Source Type: research

Low velocity impact response of fabric reinforced hybrid composites with stratified filled epoxy matrix
Publication date: Available online 15 November 2018Source: Composites Science and TechnologyAuthor(s): M. Bunea, A. Cîrciumaru, M. Buciumeanu, I.G. Bîrsan, F.S. SilvaAbstractThe aim of this study was to investigate the influence of the matrix properties, number of the carbon and aramid layers and fiber orientation on low velocity impact behavior of the fabric reinforced hybrid composites with stratified filled epoxy matrix. The impact tests were performed with the drop weight impact system at 90.629 J of energy level. The damage areas were analyzed by the visual inspection and tomographic images. The results ...
Source: Composites Science and Technology - November 16, 2018 Category: Science Source Type: research

Damage mechanisms in elastomeric foam composites: Multiscale X-ray computed tomography and finite element analyses
Publication date: Available online 16 November 2018Source: Composites Science and TechnologyAuthor(s): Brendan P. Croom, Helena Jin, Bernice Mills, Jay Carroll, Kevin Long, Judith Brown, Xiaodong LiAbstractTo understand the mechanisms of damage initiation and propagation in glass microballoon (GMB)/silicone elastomer matrix syntactic foam composites, multiscale X-ray computed tomography images obtained during in situ compression were analyzed using quantitative image processing and digital volume correlation (DVC) techniques. High-resolution tomograms revealed that both the initiation and propagation of GMB collapse depend...
Source: Composites Science and Technology - November 16, 2018 Category: Science Source Type: research

Preparation and properties of cyanate-based wave-transparent laminated composites reinforced by dopamine/POSS functionalized Kevlar cloth
Publication date: Available online 12 November 2018Source: Composites Science and TechnologyAuthor(s): Lin Tang, Jing Dang, Mukun He, Junyou Li, Jie Kong, Yusheng Tang, Junwei GuAbstractCombining method of dopamine/polyhedral oligomericsilsesquioxane (DA/POSS) was firstly performed to functionalize the surface of Kevlar (POSS-g-Kevlar@PDA, f-Kevlar) cloth. And then the corresponding f-Kevlar cloth/bisphenol A cyanate ester (BADCy) matrix wave-transparent laminated composites were successfully fabricated by the method of impregnation, lamination followed by mould pressing. The obtained wave transmission efficiency (T) of 92...
Source: Composites Science and Technology - November 14, 2018 Category: Science Source Type: research

Novel 3D network porous graphene nanoplatelets /Fe3O4/epoxy nanocomposites with enhanced electromagnetic interference shielding efficiency
Publication date: Available online 12 November 2018Source: Composites Science and TechnologyAuthor(s): Haijun Liu, Caizhen Liang, Jianjun Chen, Yuewen Huang, Fei Cheng, Fubin Wen, Bingbing Xu, Bin WangAbstractIn this work, a novel and facile technique, epoxy-water-inorganic filler suspended emulsion polymerization, was proposed to fabricate 3D network porous graphene nanoplatelet (GNP)/Fe3O4/epoxy nanocomposites with low density of 0.34–0.73 g/cm3. The obtained porous nanocomposite with 7 wt% graphene nanoplatelets and 7 wt% Fe3O4 nanoparticles loading exhibited satisfactory specific electromagnetic interferenc...
Source: Composites Science and Technology - November 14, 2018 Category: Science Source Type: research

Nanoindentation mapping of multiscale composites of graphene-reinforced polypropylene and carbon fibres
Publication date: Available online 12 November 2018Source: Composites Science and TechnologyAuthor(s): Patricia Enrique-Jimenez, Susana Quiles-Díaz, Horacio J. Salavagione, Juan Pedro Fernández-Blázquez, M.A. Monclús, Roberto Guzman de Villoria, Marián A. Gómez-Fatou, Fernando Ania, Araceli FloresAbstractThe local mechanical properties of hierarchically reinforced laminates of graphene-isotactic polypropylene (iPP) and carbon fibres are investigated by nanoindentation. Carbon fibre fabrics are alternated with films of iPP reinforced with different graphene contents and types (prist...
Source: Composites Science and Technology - November 14, 2018 Category: Science Source Type: research

Selective location and migration of poly(methyl methacrylate)- grafted clay nanosheets with low grafting density in poly(methyl methacrylate)/poly(styrene-co-acrylonitrile) blends
Publication date: Available online 13 November 2018Source: Composites Science and TechnologyAuthor(s): Ting Liu, Haimo Zhang, Min Zuo, Wenjing Zhang, Weipu Zhu, Qiang ZhengAbstractThe location and migration of poly (methyl methacrylate)-grafted clay (clay-g-PMMA) nanosheets with low grafting density in a phase-separated polymer blend of poly (methyl methacrylate)/poly (styrene-co-acrylonitrile) (PMMA/SAN) was investigated. The grafting density and molecular weight for grafted PMMA chains on the surface of clay nanosheets was about 0.04 chains/nm2 and 7.8 × 104, respectively, indicating that the grafted chains mig...
Source: Composites Science and Technology - November 14, 2018 Category: Science Source Type: research

Concurrently improved dispersion and interfacial interaction in rubber/nanosilica composites via efficient hydrosilane functionalization
Publication date: Available online 13 November 2018Source: Composites Science and TechnologyAuthor(s): Chengfeng Zhang, Zhenghai Tang, Baochun Guo, Liqun ZhangAbstractSurface modification of fillers has a profound influence on the dispersion of filler and interfacial adhesion, and thus the final performance of polymer-based composites. In this contribution, the modification of silica by polymethylhydrosiloxane (PMHS) is conducted via an efficient and fast tris(pentafluorophenyl)borane-catalyzed functionalization, which can be completed within a few minutes at room temperature. A highly hydrophobic surface and an uncompromi...
Source: Composites Science and Technology - November 14, 2018 Category: Science Source Type: research

Facile synthesis of magnetic rubber foam with cellular structure by one-step solution foam processing for application in giant magnetostriction
Publication date: Available online 13 November 2018Source: Composites Science and TechnologyAuthor(s): Yan Wang, Guizheng Guo, Yaya Zhou, Youyi Sun, Diansen Li, Yaqing Liu, Guizhe ZhaoAbstractGenerally, magnetostriction elastomer were based on magnetic field-induced strains of elastomer matrix, resulting from the rotation of magnetic particle in elastomer matrix. However, such magnetostriction was relatively small and large hysteresis. Here, a new class magnetic rubber foam with cellular structure was developed and synthesized by the one-step solution foam processing. The magnetic rubber foam did not only show larger magne...
Source: Composites Science and Technology - November 14, 2018 Category: Science Source Type: research

Polarization-induced alignment of azobenzene/fluorinated polyimide for three-dimensional shape-persistent and photo-responsive elastic helixes
Publication date: Available online 13 November 2018Source: Composites Science and TechnologyAuthor(s): Shuangwen Li, Yiyu Feng, Weizhe Wang, Tengxiao Ji, Junkai Han, Peng Long, Chen Cao, Wei FengAbstractThree-dimensional (3D) macroscopic chiral helixes using anisotropic polymer assembly shows a great potential for designing micromechanical systems and soft robotics. However, movement of flexible polymer chains make the fabrication of 3D macroscopic helical ribbons with excellent shape stability under high temperature or multitudes of stretch/strain cycling very problematic. This paper presents the polarization-induced alig...
Source: Composites Science and Technology - November 14, 2018 Category: Science Source Type: research

Temperature-responsive and piezoresistive performances of poly(N- isopropylacrylamide)-grafted reduced graphene oxide smart fiber
Publication date: Available online 14 November 2018Source: Composites Science and TechnologyAuthor(s): Hui Ma, Huanxia Zhang, Jianda Cao, Mingqiong Tong, Jianwei Zhao, Yifei Li, Hong Xu, Wen WuAbstractIn this work, temperature-responsive poly(N-isopropylacrylamide) (PNIPAm) was covalently grafted onto the edge of graphene oxide (GO) sheets through a facial method cross-linked by 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC·HCl) and N-hydroxysuccinimide in aqueous solution at room temperature. Then, the dispersion was wet spun to form a GO composite fiber. Scanning electron microscopy images sugge...
Source: Composites Science and Technology - November 14, 2018 Category: Science Source Type: research

Enhanced fracture toughness of hierarchical carbon nanotube reinforced carbon fibre epoxy composites with engineered matrix microstructure
Publication date: Available online 12 November 2018Source: Composites Science and TechnologyAuthor(s): M. Shukur Zainol Abidin, Tomi Herceg, Emile S. Greenhalgh, Milo Shaffer, Alexander BismarckAbstractFibre reinforced hierarchical composites further reinforced with up to 25 wt.% of carbon nanotubes (CNTs) were manufactured using a wet powder impregnation route. Microstructural heterogeneity in the matrix of these laminates was engineered during wet powder impregnation to produce CNTs rich regions with spatial separation. The Mode I fracture toughness of these heterogeneous hierarchical composites increased by 41% and 26...
Source: Composites Science and Technology - November 12, 2018 Category: Science Source Type: research

Ultrathin and anisotropic polyvinyl butyral/Ni-graphite/short-cut carbon fibre film with high electromagnetic shielding performance
Publication date: Available online 12 November 2018Source: Composites Science and TechnologyAuthor(s): BianYing Wen, XueJiao Wang, Yang ZhangAbstractUltrathin, flexible and anisotropic polyvinyl butyral (PVB)/graphite coated with nickel (Ni-Gr)/short-cut carbon fibre (SCF) cast films were fabricated using a convenient solution casting method. The effects of the filler components, contents, and their distribution structures on the electromagnetic shielding effectiveness (SE) of the composites are investigated. The results indicate that the hybridisation and distribution of fillers with different shapes could significantly i...
Source: Composites Science and Technology - November 12, 2018 Category: Science Source Type: research

Indirect morphological analysis of particles in polymer particle composites via non-destructive permittivity measurements
This study addresses the lack of suitable non-destructive monitoring methods appropriate for ssFP possessing a thickness below 1μm and an area equivalent diameter of several 10μm. An elegant method was developed to validate the integrity of ssFP within composites, which is based on the measurement of the composites' permittivity and applying precise micro-structure property correlations to indirectly determine the fillers' morphological features. The main hypothesis tested was that a reduction of the particles aspect ratio by a factor of larger than 5 can be detected by the measurement of the composites' permittivity...
Source: Composites Science and Technology - November 11, 2018 Category: Science Source Type: research

Super-toughed Poly(lactic acid)/thermoplastic Poly(ether)urethane nanofiber composites with in-situ formation of aligned nanofibers prepared by an innovative eccentric rotor extruder
Publication date: Available online 9 November 2018Source: Composites Science and TechnologyAuthor(s): Yue He, Zhi-tao Yang, Jin-ping QuAbstractIn this work, an unprecedented methodology has been proposed to manufacture high-performance polymer composites, that is, a continuously and intensively elongational flow field created by an original and revolutionary eccentric rotor extruder (ERE) is implemented in the whole melting, plasticizing and blending process. Which subverts traditional processing methods of the shear flow field in twin-screw extruder and mixer. A super-toughed poly(lactide acid) (PLA)/thermoplastic poly(es...
Source: Composites Science and Technology - November 11, 2018 Category: Science Source Type: research

Editorial Board
Publication date: 10 November 2018Source: Composites Science and Technology, Volume 168Author(s): (Source: Composites Science and Technology)
Source: Composites Science and Technology - November 11, 2018 Category: Science Source Type: research

Self-suspended starch fluids for simultaneously optimized toughness, electrical conductivity, and thermal conductivity of polylactic acid composite
In this study, self-suspended starch fluids composed of modified granules as the core and polyethylene glycol-substituted tertiary amines as the shell were first fabricated via a combined carboxymethylation and acylation reaction. The as-prepared starch fluids exhibited liquid-like behavior and had semiconductor electric conductivity (4.91 × 10−5 S/cm) at room temperature without a solvent. The modulus of starch fluids was clearly reduced under the heating process and exhibited its initial flow properties upon cooling, displaying thermo-reversible behavior. The resultant fluids were then incorporated into...
Source: Composites Science and Technology - November 9, 2018 Category: Science Source Type: research

Fabrication and investigation on the Fe3O4/thermally annealed graphene aerogel/epoxy electromagnetic interference shielding nanocomposites
Publication date: Available online 9 November 2018Source: Composites Science and TechnologyAuthor(s): Yiming Huangfu, Chaobo Liang, Yixuan Han, Hua Qiu, Ping Song, Lei Wang, Jie Kong, Junwei GuAbstractEthylenediamine functionalized Fe3O4 (NH2-Fe3O4) nanoparticles and graphene oxide (GO) were compounded firstly, followed by the addition of L-ascorbic acid, to obtain the Fe3O4/thermally annealed graphene aerogel (Fe3O4/TAGA) by thermal annealing method. And the Fe3O4/TAGA/epoxy nanocomposites were then fabricated via template-casting method. When the mass ratio of GO to NH2-Fe3O4 was 2:1 and the total mass fraction of Fe3O4/...
Source: Composites Science and Technology - November 9, 2018 Category: Science Source Type: research

Eliminating lightning strike damage to carbon fiber composite structures in Zone 2 of aircraft by Ni-coated carbon fiber nonwoven veils
Publication date: Available online 9 November 2018Source: Composites Science and TechnologyAuthor(s): Yunli Guo, Yongzheng Xu, Qinglin Wang, Qi Dong, Xiaosu Yi, Yuxi JiaAbstractBy using standardized Waveforms C and D, this study explored the lightning strike protection (LSP) effectiveness of nickel coated carbon fiber nonwoven veils (Ni-CFNVs) on protecting the carbon fiber composite structures in Zone 2 (aircraft lightning zoning). The post-lightning damage was evaluated by visual inspection, ultrasonic scan and residual strength test. Results showed that the Ni-CFNV of 70 g/m2 eliminated lightning strike damage inflict...
Source: Composites Science and Technology - November 9, 2018 Category: Science Source Type: research

Achieving high dielectric permittivity, high breakdown strength and high efficiency by cross-linking of poly(vinylidene fluoride)/BaTiO3 nanocomposites
Publication date: Available online 9 November 2018Source: Composites Science and TechnologyAuthor(s): Ze-Hui Dai, Ting Li, Yang Gao, Jun Xu, Jinliang He, Yunxuan Weng, Bao-Hua GuoAbstractPolymer nanocomposite dielectrics have drawn increasing attention recent years. However, dispersion of high-ε nanoparticles causes decreased breakdown strength and increased loss tangent. High dielectric permittivity, high breakdown strength, low dielectric loss and high charging-discharging energy efficiency are hard to achieve at the same time. In this research, in order to achieve all these goals, a combination method consists o...
Source: Composites Science and Technology - November 9, 2018 Category: Science Source Type: research

Novel electrically conductive epoxy/reduced graphite oxide/silica hollow microspheres adhesives with enhanced lap shear strength and thermal conductivity
Publication date: Available online 7 November 2018Source: Composites Science and TechnologyAuthor(s): Ruchi Aradhana, Smita Mohanty, Sanjay Kumar NayakAbstractA novel preparation method was employed for development of epoxy based electrically conductive adhesives (ECAs) by utilizing reduced graphite oxide (rGO, conductive filler) and silica hollow microspheres (SiHM, non-conductive hollow microsphere). The ECAs was fabricated by considering three different ratios of rGO:SiHM such as 30:10, 40:10 and 50:10. The lap shear strength and unnotched impact strength was found to be increasing with the inclusion of filler mixture, ...
Source: Composites Science and Technology - November 8, 2018 Category: Science Source Type: research

Large improvement of thermal transport and mechanical performance of polyvinyl alcohol composites based on interface enhanced by SiO2 nanoparticle- modified-hexagonal boron nitride
This study broadens the surface modification method of h-BN and provides a valuable reference for fabrication of high-performance thermal interface materials. (Source: Composites Science and Technology)
Source: Composites Science and Technology - November 8, 2018 Category: Science Source Type: research

The effect of graphene network formation on the electrical, mechanical, and multifunctional properties of graphene/epoxy nanocomposites
Publication date: Available online 8 November 2018Source: Composites Science and TechnologyAuthor(s): Arnaud Kernin, Kening Wan, Yi Liu, Xuetao Shi, Jie Kong, Emiliano Bilotti, Ton Peijs, Han ZhangAbstractThe network formation of reduced graphene oxide (rGO) within an epoxy resin during the curing process has been in-situ visualised for the first time, with its effect on electrical, mechanical, and multifunctional properties of these nanocomposites explored. Different initial states of dispersion and filler contents were employed to examine the nanofiller network formation process. Good electrical conductivity (10−3...
Source: Composites Science and Technology - November 8, 2018 Category: Science Source Type: research

Effect of ionomer interfacial compatibilization on highly filled HDPE/Al2O3/ionomer composites: Morphology and rheological behavior
This study reveals the potential application of the EMAA-Na ionomer to resolve the challenge of the strength and toughness performance degradation in highly filled polymer composites. (Source: Composites Science and Technology)
Source: Composites Science and Technology - November 6, 2018 Category: Science Source Type: research

Effect of graphene and fabrication technique on the release kinetics of carvacrol from polylactic acid
Publication date: Available online 3 November 2018Source: Composites Science and TechnologyAuthor(s): Roberto Scaffaro, Andrea Maio, Francesco LoprestiAbstractPorous membranes and thin films containing poly-lactic acid (PLA), carvacrol (CRV) and graphene nanoplatelets (GNP) were fabricated by electrospinning and solvent casting at different formulations.The systems were characterized from a mechanical, morphological, calorimetric and spectroscopic point of view. CRV release as a function of time was studied and a mathematical model was used to fit and interpret the data in order to investigate the release mechanism.The res...
Source: Composites Science and Technology - November 4, 2018 Category: Science Source Type: research

A novel and facile fabrication of polyphosphazene nanotube/carbon fiber multi-scale hybrid reinforcement and its enhancing effect on the interfacial properties of epoxy composites
Publication date: Available online 2 November 2018Source: Composites Science and TechnologyAuthor(s): Xiang Chen, Haibing Xu, Dong Liu, Chun Yan, Yingdan ZhuAbstractThe mechanical properties of carbon fiber (CF) reinforced composites are greatly dependent on the interfacial adhesion between fiber and resin matrix. Introducing nanoscale reinforcements into the interface is an effective approach to improve the interfacial adhesion of CF composites. In this paper, we proposed a facile and effective method for assembling poly(cyclotriphosphazene-co-4,4′-sulfonyldiphonel) nanotube onto CF surface as a novel multi-scale hy...
Source: Composites Science and Technology - November 3, 2018 Category: Science Source Type: research

Effects of state of charge on elastic properties of 3D structural battery composites
Publication date: Available online 2 November 2018Source: Composites Science and TechnologyAuthor(s): David Carlstedt, Erik Marklund, Leif E. AspAbstractThe effects of state of charge (SOC) on the elastic properties of 3D structural battery composites are studied. An analytical model based on micromechanical models is developed to estimate the effective elastic properties of 3D structural battery composite laminae at different SOC. A parametric study is performed to evaluate how different design parameters such as volume fraction of active materials, stiffness of constituents, type of positive electrode material, etc. affe...
Source: Composites Science and Technology - November 3, 2018 Category: Science Source Type: research

A phase-field model for strength and fracture analyses of fiber-reinforced composites
Publication date: Available online 1 November 2018Source: Composites Science and TechnologyAuthor(s): J.J. Espadas-Escalante, N.P. van Dijk, P. IsakssonAbstractA phase-field model for brittle fracture is proposed and evaluated for strength and fracture analyses of composites. In addition to the elastic properties, this approach makes use of only the fracture toughness and the strength of the material. The capability of the method is shown in analyses of composites at two scales. In laminates, strengths of notched laminates are estimated, including hole size effects. In a lamina, cracks developed in both transverse tension ...
Source: Composites Science and Technology - November 2, 2018 Category: Science Source Type: research

Enhanced thermal conductivity and mechanical property of flexible poly (vinylidene fluoride)/boron nitride/graphite nanoplatelets insulation films with high breakdown strength and reliability
This study provides a kind of flexible thermal interface material with excellent comprehensive properties for application in field of power electronics. (Source: Composites Science and Technology)
Source: Composites Science and Technology - November 1, 2018 Category: Science Source Type: research

Highly conductive and stretchable fiber interconnections using dry-spun carbon nanotube fibers modified with ionic liquid/poly(vinylidene fluoride) copolymer composite
Publication date: Available online 29 October 2018Source: Composites Science and TechnologyAuthor(s): Jimi Eom, Yu Ri Lee, Jun Ho Lee, Sung Kyu Park, Youngjin Jeong, Jong S. Park, Yong-Hoon KimAbstractIn this paper, we demonstrate highly conductive and stretchable fiber interconnections for electronic textiles (e-textiles) using dry-spun carbon nanotube (CNT) fibers modified with ionic liquid (IL)/poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) copolymer composite. By adopting direct infiltration of CNT fibers with a mixture of 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide and PVDF-HFP, mechani...
Source: Composites Science and Technology - October 30, 2018 Category: Science Source Type: research

Enhancement of mechanical properties of CFRP manufactured by using electro-activated deposition resin molding method with the application of CNF without hydrophobic treatment
In this study, shortly after electro-activated deposition, CNF without a hydrophobic treatment was applied to the surface of the resin-impregnated carbon fiber fabric. The mechanical properties of CFRP could be enhanced, and optimum weight fraction of CNF was revealed. (Source: Composites Science and Technology)
Source: Composites Science and Technology - October 29, 2018 Category: Science Source Type: research

Effect of surface modification on the dispersion, rheological behavior, crystallization kinetics, and foaming ability of polypropylene/cellulose nanofiber nanocomposites
Publication date: Available online 29 October 2018Source: Composites Science and TechnologyAuthor(s): Long Wang, Kiyomi Okada, Minami Sodenaga, Yuta Hikima, Masahiro Ohshima, Takafumi Sekiguchi, Hiroyuki YanoAbstractHerein, the issue of dispersing cellulose nanofiber (CNF) in hydrophobic polymer has been solved through the modification of the CNF surface using alkenyl succinic anhydride (ASA). Polypropylene (PP) nanocomposites containing CNF with various degrees of substitution (DS)−ranging from 0 to 0.4−were prepared by melting and blending in an extruder. Fourier transform infrared spectroscopy (FTIR) results...
Source: Composites Science and Technology - October 29, 2018 Category: Science Source Type: research

Characterization of adhesive bonded CFRP laminates using full-field digital image stereo-correlation and finite element analysis
Publication date: Available online 26 October 2018Source: Composites Science and TechnologyAuthor(s): Claudia Barile, Caterina Casavola, Giovanni Pappalettera, Paramsamy Kannan VimalathithanAbstractIn this paper, the full field experimental analysis, and numerical and morphological investigation on two groups of adhesive bonded CFRP laminates are presented. The Digital Image Stereo Correlation (Stereo DIC) technique is used to characterize the out of plane deformation of the specimens under loading. Despite the simplicity of the adopted approach, the analysis and the comparison between the load-displacement curve and the s...
Source: Composites Science and Technology - October 27, 2018 Category: Science Source Type: research

Triple-stimuli responsive shape memory effect of novel polyolefin elastomer/lauric acid/carbon black nanocomposites
In this study, novel shape memory composite of polyolefin elastomer (POE)/lauric acid (LA)/carbon black (CB) nanoparticles with triple-stimuli responsive shape memory effect (SME) is investigated. Crystalline small molecule LA, replacing the commonly used semi-crystalline polymers, is utilized to cooperate with POE and acts as the fixing phase. CB nanoparticles are specifically dispersed in the POE phase, resulting in the formation of intensive conductive pathways and an improvement in the recovery force. The composites can be deformed into arbitrary temporary shapes, and exhibit high shape recovery and fast response to th...
Source: Composites Science and Technology - October 26, 2018 Category: Science Source Type: research

A facile method to prepare transparent and stretchable epidermal thin film heaters
Publication date: Available online 26 October 2018Source: Composites Science and TechnologyAuthor(s): Dongyan Han, Yunxia Li, Xiao Jiang, Wenyu Zhao, Fangcong Wang, Wei Lan, Erqing Xie, Weihua HanAbstractA stretchable and semi-transparent epidermal thin film heater (TFH) has been fabricated by using silver nanowire (Ag NW) networks as a Joule heat generator and polydimethylsiloxane (PDMS) as a stretchable and transparent matrix. The device is a conductive layer of interconnected Ag NWs sandwiched with two layers of PDMS. The output power and transparency of the device were rationally tuned by adjusting the Ag NW amount. Ou...
Source: Composites Science and Technology - October 26, 2018 Category: Science Source Type: research

Enhanced thermal conductivity and mechanical property of flexible poly (vinylidene fluoride) / boron nitride /graphite nanoplatelets insulation films with high breakdown strength and reliability
This study provides a kind of flexible thermal interface material with excellent comprehensive properties for application in field of power electronics. (Source: Composites Science and Technology)
Source: Composites Science and Technology - October 26, 2018 Category: Science Source Type: research

Study of hygroscopic stresses in asymmetric biocomposite laminates
Publication date: Available online 25 October 2018Source: Composites Science and TechnologyAuthor(s): Mael Péron, Amandine Célino, Mickael Castro, Frédéric Jacquemin, Antoine Le DuigouAbstractThe hygro-mechanical behaviour of a bio-sourced composite material (MAPP/flax) is experimentally investigated through the characterization of its moisture diffusion and elastic properties, as well as the in-plane hygroscopic swelling of a unidirectional ply sequence and curvature in the case of an asymmetric lay-up sequence. From these considerations, we propose a hygro-mechanical model for the material beh...
Source: Composites Science and Technology - October 25, 2018 Category: Science Source Type: research

Montmorillonite/PVDF-HFP-based energy conversion and storage films with enhanced piezoelectric and dielectric properties
In this study, Li+ modified montmorillonite/poly(vinylidene fluoride-co-hexafluoropropylene) (MMT(Li)/PVDF-HFP) with energy conversion and storage abilities were prepared, and the effects of Li+ ions and adsorbed water on phase transformation as well as dielectric and piezoelectric performance were studied. MMT(Li)/PVDF-HFP composite film with 15 wt% MMT and 1.72 wt% H2O exhibited the good energy conversion and storage performances with high dielectric constant, generated current, open circuit voltage and holding time because of the Li+ polarization and β-phase nucleation by hydrogen bonds. Therefore, MMT modified...
Source: Composites Science and Technology - October 25, 2018 Category: Science Source Type: research

Ti3C2Tx MXene/polyaniline (PANI) sandwich intercalation structure composites constructed for microwave absorption
Publication date: Available online 24 October 2018Source: Composites Science and TechnologyAuthor(s): Huawei Wei, Jidong Dong, Xiaojiao Fang, Wenhui Zheng, Yutong Sun, Yue Qian, Zaixing Jiang, Yudong HuangAbstractMXene, as a new 2-dimensional (2D) material, has excellently potential applications in the field of electrochemistry owing to its high conductivity and fast charge transporting speed. Especially, MXene/polymer composites have attracted widely attentions due to their extensive application in the area of multi-functional materials. Herein, the composites of Ti3C2Tx MXene/polyaniline (PANI) with different PANI conten...
Source: Composites Science and Technology - October 25, 2018 Category: Science Source Type: research

Study of MXene-filled polyurethane nanocomposites prepared via an emulsion method
Publication date: Available online 24 October 2018Source: Composites Science and TechnologyAuthor(s): Weiqiang Zhi, Shanglin Xiang, Renji Bian, Ruizhi Lin, Kaihua Wu, Tingwei Wang, Dongyu CaiAbstractIn this work, an emulsion method is applied to fill two-dimensional MXenes into polyurethanes (PUs). It shows that the addition of 0.5 wt% MXenes increase the yield stress, tensile strength and hardness of PUs by ∼70%, ∼20% and 10%, respectively. The mechanical enhancement is associated with the increase of hardness and reduction of water absorption. Morphologic study shows that a good dispersion of MXenes is achieved...
Source: Composites Science and Technology - October 25, 2018 Category: Science Source Type: research

Fabricating a high performance composite separator with a small thickness for lithium ion batteries
Publication date: 10 November 2018Source: Composites Science and Technology, Volume 168Author(s): Xiaosong Huang, Nicole EllisonAbstractSeparator is a porous membrane that physically separates the cathode and anode, yet ensures the lithium ion transport between these two electrodes. This work attempts to develop a high performance composite separator that can also provide a low cost potential when produced at a large scale. For this purpose, a non-woven reinforced macroporous polyaramid separator with a thickness comparable to mainstream commercial products was developed to achieve improved separator mechanical performance...
Source: Composites Science and Technology - October 25, 2018 Category: Science Source Type: research

An effective compatibilizer for tin fluorophosphate glass/polymer composites obtained from “one pot” KF-RAFT polymerization
Publication date: 10 November 2018Source: Composites Science and Technology, Volume 168Author(s): Li Zhang, Hua Deng, Yao Jing, Lei Tao, Qiang FuAbstractTin fluorophosphate glass (Pglass)/polymer composites have been widely investigated due to their applications in areas including: gas barrier, electronic packaging and fire retardant, etc. The compatibility between Pglass and polymer matrix is rather poor due to the large interfacial tension. Novel method is urgently needed to address this issue so that the interfacial interaction, specific interfacial area as well as aspect ratio of Pglass could be enlarged, which could l...
Source: Composites Science and Technology - October 25, 2018 Category: Science Source Type: research

Double-layer structured PVDF nanocomposite film designed for flexible nanogenerator exhibiting enhanced piezoelectric output and mechanical property
Publication date: 10 November 2018Source: Composites Science and Technology, Volume 168Author(s): Penghao Hu, Lili Yan, Chaoxian Zhao, Yangyang Zhang, Jin NiuAbstractPVDF-based nanocomposite films are promising in fabrication flexible piezoelectric nanogenerators for self-powered portable devices. In this work, a double-layered heterostructure was designed and the PVDF nanocomposite films contained with barium titanate nanoparticles were prepared by solution spin coating. The nanofillers were concentrated distributed in one layer of half the film, and the remaining half was neat PVDF layer. The double-layered BT/PVDF films...
Source: Composites Science and Technology - October 25, 2018 Category: Science Source Type: research

Piezoresistive polymer blends for electromechanical sensor applications
Publication date: 10 November 2018Source: Composites Science and Technology, Volume 168Author(s): P. Costa, J. Oliveira, Laura Horta-Romarís, María-José Abad, J. Agostinho Moreira, I. Zapiráin, M. Aguado, S. Galván, S. Lanceros-MendezAbstractDoped polyaniline (PANI) exhibits excellent electrical properties that can be used in composite materials to replace metallic or carbonaceous nanofillers commonly used in composites for sensor applications. Polymer blends based on PANI and thermoplastic elastomer styrene-ethylene/butylene-styrene (SEBS) copolymer have been prepared by solvent casting ...
Source: Composites Science and Technology - October 25, 2018 Category: Science Source Type: research

Reprocessable and robust crosslinked elastomers via interfacial CN transalkylation of pyridinium
Publication date: 10 November 2018Source: Composites Science and Technology, Volume 168Author(s): Jing Huang, Lijie Zhang, Zhenghai Tang, Siwu Wu, Baochun GuoAbstractCovalently cross-linked elastomers with high elasticity are widely found in daily life and high-tech areas. However, the irreversibility of the crosslinked networks hinders the rubber products from reprocessing or recycling, causing a major environmental problem. Recently developed vitrimer chemistry provides fantastic avenues for cross-linked elastomers to achieve full reprocessability and recyclability. Herein, we disclose a novel CN transalkylation of pyrid...
Source: Composites Science and Technology - October 23, 2018 Category: Science Source Type: research

Strain sensing behaviors of stretchable conductive polymer composites loaded with different dimensional conductive fillers
This study provides a deeper understanding of the strain sensing behaviors of the stretchable conductive polymer composites loaded with different dimensional conductive fillers, which helps to design strain sensing materials. (Source: Composites Science and Technology)
Source: Composites Science and Technology - October 23, 2018 Category: Science Source Type: research

Functionalized aramid nanofibers prepared by polymerization induced self-assembly for simultaneously reinforcing and toughening of epoxy and carbon fiber/epoxy multiscale composite
Publication date: 10 November 2018Source: Composites Science and Technology, Volume 168Author(s): Guodong Zhou, Weitao Wang, Mao PengAbstractAramid nanofibers (ANFs) are polymeric nanofibers that have been drawing tremendous attention as new nanoscale building blocks of advanced composites. Herein, we report a new strategy to rapidly synthesize functionalized ANFs (fANFs) through polymerization-induced self-assembly of poly(phenylene terephthalamide) (PPTA) using soluble sulfonated PPTA to tailor the size of fANTs, and the extraordinary reinforcing and toughening effect of fANFs on epoxy (EP) resin and multiscale carbon fi...
Source: Composites Science and Technology - October 21, 2018 Category: Science Source Type: research