Article
Materials Science, Paper & Wood
Donatella Duraccio, Rossella Arrigo, Valentina Strongone, Pier Paolo Capra, Giulio Malucelli
Summary: The research focused on preparing UHMWPE/CNC composites and revealed that CNC can improve the mechanical properties and crystallinity of the composites. Additionally, different preparation methods play a key role in determining the performance of the composites.
Article
Chemistry, Applied
Amanda M. Alves, Shirley N. Cavalcanti, Moacy P. da Silva, Daniel M. G. Freitas, Pankaj Agrawal, Tomas J. A. de Melo
Summary: This study evaluated the electrical conductivity, rheological, and mechanical properties of copolymer/carbon black conductive polymer composites. PEgMA/CB showed the highest conductivity, while BioPE/CB exhibited the best electrical performance. CB acted as a reinforcing filler, increasing the elastic modulus and tensile strength of BioPE and the copolymers.
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
(2021)
Article
Polymer Science
Nicoleta-Violeta Stanciu, Felicia Stan, Ionut-Laurentiu Sandu, Catalin Fetecau, Adriana-Madalina Turcanu
Summary: This paper investigated the material properties of polypropylene (PP) nanocomposites filled with multi-walled carbon nanotubes (MWCNTs) and found that the addition of MWCNTs affects the melt shear viscosity, specific volume, thermal conductivity, mechanical properties, and electrical properties of the materials. The study revealed that increasing MWCNT loading results in higher melt shear viscosity, lower specific volume, thermal conductivity below 0.35 W/m·K, and the nanocomposite becomes electrically conductive at 3 wt.% loading.
Article
Chemistry, Physical
Fang Luo, Xiaosong Jiang, Hongliang Sun, Defeng Mo, Yali Zhang, Rui Shu, Xue Li
Summary: This study focuses on the fabrication of thermal management materials integrating thermal and electrical properties by preparing graphene film reinforced Cu laminated composites. Graphene serves as a good reinforcement phase due to its excellent electrical and thermal conductivity. By optimizing the internal structure of the materials, better electrical and thermal conductivity performance can be achieved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Jiani Yu, Lidong Wang, Zhaoyuan Liu, Jie Xu, Yingying Zong
Summary: Graphene reinforced copper composites have potential applications in various industries, but the current preparation methods are complicated and expensive. This study successfully prepared graphene reinforced copper composites with excellent overall properties by combining electrodeposition, thermal reduction, and sintering. The addition of graphene improved the nucleation process and refined the grains, resulting in improved mechanical properties. The copper matrix was purified, and the oxygen-containing functional groups of graphene oxide were partially repaired, leading to improved electrical properties. Compared to the one-step electrodeposition method, the graphene in the composites had fewer oxygen-containing functional groups, ensuring thermal stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
M. Alejandra Mazo, Amador C. Caballero, Juan Rubio
Summary: Novel bulk SiOC/spodumene composites were developed by spark plasma sintering (SPS) at low temperature. Spodumene acts as meltable/active filler and leads to the formation of Si-Al-O network and alpha-cristobalite at high temperature. The epitaxial growth of few-layered graphene over SiC particles occurs at 1400 °C, resulting in increased phonon transport and electrical conductivity.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Environmental Sciences
Ravi Shankar Kumar, Rishiraj Goswami, Krishna Raghav Chaturvedi, Tushar Sharma
Summary: This study synthesized a stable TiO2 nanofluid with superior electrical and rheological properties for high-temperature industrial applications. The addition of surfactants improved the stability of the nanofluid and enhanced its carbon capture capability.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Physical
Dong-Kwan Lee, Jongchan Yoo, Hyunwoo Kim, Byung-Ho Kang, Sung-Hoon Park
Summary: Studies have shown that nanofillers such as carbon nanotubes play a significant role in improving the thermal conductivity of polymers, with multi-walled carbon nanotube/polymer composites exhibiting excellent electrical and thermal properties, making them suitable for use as flexible and lightweight heat transfer materials.
Article
Chemistry, Multidisciplinary
Priyanka Kolhar, Basavaraja Sannakki, Meenakshi Verma, S. V. Prabhakar, Mansoor Alshehri, Nehad Ali Shah
Summary: Nickel ferrite nanoparticles were prepared by using a low-temperature self-propagating solution combustion method and were doped with polyaniline. The composites were characterized using various techniques and exhibited promising electrical and optical properties, such as increased AC conductivity and shifted absorption peaks. The addition of ferrite in polyaniline led to decreased optical band gap and increased Urbach energy, making these composites suitable for applications in solar cells.
Article
Chemistry, Multidisciplinary
Tyler Albright, Jared Hobeck
Summary: This research explores a high-fidelity stochastic modeling framework to predict the electromechanical properties of conductive polymer composites (CPCs) at bulk scales. CPC dogbone specimens are manufactured and their properties are characterized through testing. The modeled predictions agree with experimental results and are compared to predictions from an analytical model.
Review
Chemistry, Multidisciplinary
Shengchang Mu, Jianguang Yue, Yu Wang, Chuang Feng
Summary: This paper reviews existing studies on graphene reinforced cement composite materials (GRCCMs), focusing on three material properties (electrical, piezoresistive, and electromagnetic) correlated to the multifunction of graphene fillers. Graphene fillers demonstrate better reinforcing effects compared to other fillers due to their large specific surface area. The review identifies challenges and research gaps for future research and aims to provide more insightful perspectives for developing multifunctional GRCCMs.
Article
Materials Science, Composites
Hyeseong Lee, Mi Na Kim, Han Gyeol Jang, Ji-un Jang, Jaewoo Kim, Seong Yun Kim
Summary: The aggregation of nano-carbon fillers in composites due to van der Waals forces hinders their excellent conductive properties. To overcome this, a dispersion strategy using phenyl glycidyl ether (PGE) as a non-covalent functionalization agent was proposed. The composites filled with PGE-treated nano-carbon fillers showed significantly improved electrical and thermal conductivities.
COMPOSITES COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Ibrahim H. A. Badr, Osama A. S. Rafea
Summary: The development of mesoporous glass-ceramic frits for reference electrodes is crucial in overcoming the limitations of cross-contamination and screening effect in electrochemical measurements. These glass-ceramic frits exhibit low flow rates, high potential stability, and small potential drift, providing significant improvements compared to existing frit-based reference electrodes.
Article
Materials Science, Ceramics
Qizhong Li, Zhangpeng Meng, Bing Xiao, Jiaojiao Li, Kai Liu, Meijun Yang, Song Zhang, Takashi Goto, Rong Tu
Summary: HfC-HfB2-SiC composites were prepared by arc melting, with a ternary eutectic composition identified and displaying a complex microstructure. The composite exhibited high hardness and fracture toughness at elevated temperatures, with varying electrical and thermal conductivity at different temperature ranges.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Ondrej Hanzel, Zoltan Lences, Peter Tatarko, Richard Sedlak, Ivo Dlouhy, Jan Dusza, Pavol Sajgalik
Summary: Silicon carbide-based composites with graphene nanoplatelets were prepared in three and five layers to achieve high electrical conductivity, especially suitable for electric discharge machining. Increasing sintering pressure significantly improved the electrical conductivity of the composites, with a positive influence on individual layers with higher GNPs content. While there was a decrease in hardness and elastic modulus, the materials showed good adhesion between layers with no delamination observed in scratch tests.
Article
Polymer Science
Yuanzhang Jiang, Xuyi Wang, Yanting Han, Dakai Gong, Yingchun Gu, Lin Tan
Summary: In this study, FeCl3 and poly(acrylic acid) (PAA) were doped into waterborne polyurethanes (WPUs) to create multifunctional materials with self-healing and antimicrobial properties. WPU/Fe/PAA-5.5, containing 5.5 wt % PAA, exhibited excellent mechanical properties, strong self-healing capabilities, and an impressive antimicrobial rate of over 90%. These supramolecular films were also highly recyclable through hot-pressing.
Article
Polymer Science
Longyu Tian, Min Wang, Guangming Liao, Baoliang Liu, Sujuan Zhang, Yucheng Sun, Zhen Meng, Jintao Zhang, Zaijun Lu
Summary: Two kinds of benzoxazine monomers were synthesized and used to prepare polybenzoxazine anion exchange membranes (AEMs) with quaternary ammonium functionalization. The LQPBZ AEM exhibited better ion conductivity and alkaline stability.
Article
Polymer Science
Claire A. Lemarchand
Summary: This study investigates the shock behavior of three different polymers through molecular dynamics simulations. The results reveal specificities in the shock behavior of polymers, including deviations from the linear relation between shock velocity and particle velocity, as well as differences in shear stress relaxation behind the shock front. It is found that the deviation of the Hugoniot locus is related to the change in the relative contribution of bonding and non-bonding potential energies, while polymers with higher glass transition temperatures exhibit slower shear stress relaxation.
Article
Polymer Science
Zengquan Liu, Xiaochun Yin, He Zhang, Shuo Gao, Qinglin Kuang, Yanhong Feng
Summary: A powder solid-state extension (PSSE) technology was proposed to address the high melt viscosity issue of UHMWPE. By uniaxial extension and sintering in the solid state, a highly self-reinforced material was prepared. X-ray diffraction and scattering techniques were used to study the structural evolution during the PSSE process, and a solid-phase induced transformation model was established.
Article
Polymer Science
Zhike Li, Anyu Luo, Rui Zhou, Xin Li, Haiyan Li
Summary: A novel high temperature resistance IL@SiO2 nanocapsules were successfully prepared and their friction and wear properties in PA6 composites were studied. The addition of IL@SiO2 nanocapsules reduced the friction coefficient and wear rate without affecting the mechanical properties of PA6. The synergy between the IL core and SiO2 wall in the nanocapsules improved the self-lubricating performance of the PA6 composites.
Article
Polymer Science
Xin Liu, Xuhong Guo, Qi Liao
Summary: In this study, an algorithm for accurately estimating viscosity is developed using molecular dynamics simulations and the Green-Kubo formula. This algorithm can be applied to complex systems with long correlations, such as macromolecular and biological simulation systems.
Article
Polymer Science
Hao Pu, Yun-Lei Hou, Jing -Zhou Chen, Dong -Lin Zhao
Summary: The use of modified graphene improves the interfacial adherence of carbon fibers to epoxy resin, resulting in enhanced interfacial and bending properties of CF and matrix in CF/EP composites, as well as increased interlaminar shear strength and flexural strength.
Article
Polymer Science
Wei-Chung Ke, Jin-Wei Lin, Manohar Reddy Busireddy, Yueh-Hsing Lee, Jiun-Tai Chen, Chain-Shu Hsu
Summary: This study introduces a crosslinkable monomer, TAIC, to synthesize three crosslinked polyimide films, which exhibit improved thermal, mechanical, and dielectric properties. The introduction of TAIC enhances the tensile strength, reduces the dielectric constant and dielectric loss, and decreases the coefficient of thermal expansion of the polyimide films.
Article
Polymer Science
Alex Kwasi Kumi, Ruiling Fan, Ye Chen, Yumei Zhang
Summary: The difference in leaching of amylopectin from cellulose/amylopectin/1-butyl-3-methylimidazolium chloride ([Bmim][Cl]) blends during regeneration in water and aqueous ethanol has been studied. Molecular dynamics simulations showed that the dissolution and regeneration mechanisms of amylopectin in [Bmim][Cl] are similar to cellulose in ionic liquids. Water regeneration leads to weak electrostatic interactions, resulting in high leaching of amylopectin. In contrast, ethanol-water interactions enhance electrostatic interactions among amylopectin chains, limiting amylopectin leaching in aqueous ethanol.
Article
Polymer Science
Xi Zeng, Junwei Zhou, Junbiao Peng, Chunsheng Zhang, Danling Wang, Yihu Song, Qiang Zheng
Summary: This study utilizes an oligomer deep eutectic solvent (DES) based on polyethylene glycol to regulate the vulcanization kinetics of rubber. The results show that the DES can accelerate vulcanization at low temperatures without affecting the crosslinking density and Mullins effect.
Article
Polymer Science
Qianqian Yue, Yongfei Peng, Xingjian Liu, Aihua He, Huarong Nie
Summary: The addition of metal deactivators can effectively suppress the aging of TBIR, prolong its lifespan, and have no negative effects on its physical and processing properties. These research findings are of great importance for improving the stability and aging resistance of polymers.
Article
Polymer Science
J. Gomez-Caturla, J. Ivorra-Martinez, R. Tejada-Oliveros, V Moreno, D. Garcia-Garcia, R. Balart
Summary: This work focuses on the development of environmentally friendly PLA formulations by using different esters derived from geraniol as plasticizers. The results show that these esters have good compatibility with PLA, and they can effectively enhance the elongation and plasticity of PLA, reduce its glass transition temperature, and slightly improve its water absorption capabilities.
Article
Polymer Science
Dandan Li, Zhaohui Lu, Zhao Ke, Ke Xu, Fengna Dai, Youhai Yu, Guangtao Qian, Chunhai Chen
Summary: In this study, cross-linked PI aerogel membranes with low dielectric constant and high moisture resistance were prepared by co-polymerization and scraping coating technology. The incorporation of fluorinated blocks and benzimidazole ring structures resulted in novel PI aerogel membranes with fascinating dielectric properties and outstanding moisture resistance.
Article
Polymer Science
Zhaoyang Chu, Qing Zhang, Haihua Luo, Han Zhou, Fapei Zhang, Wei Chen, Wenhua Zhang
Summary: Multi-physical fields solution processing strategy is a universal and facile method for preparing various conjugated polymer films and high-performance devices. In this study, we employed a combined microfluidic flow and ultrasonication strategy (FU) for processing CP solutions, and found a pronounced synergetic effect in promoting the pre-ordering of chains in solution. The conformation order and anisotropy of the solution were revealed through various characterizations. A non-classical nucleation model for polymer crystallization in non-equilibrium solution processing was confirmed. The roles of microfluidic flow and ultrasonication in chain aggregation and crystallization were addressed through multi-physical simulations. Compared to pristine solutions, the FU strategy showed improved solution anisotropy and crystallization kinetics, resulting in higher crystallinity in films and increased mobilities in OFET devices. The FU processing strategy provides a universal approach for regulating chain conformation and aggregation in conjugated polymer solutions.