Article
Nanoscience & Nanotechnology
Zhi-Hui Zeng, Na Wu, Jing-Jiang Wei, Yun-Fei Yang, Ting-Ting Wu, Bin Li, Stefanie Beatrice Hauser, Wei-Dong Yang, Jiu-Rong Liu, Shan-Yu Zhao
Summary: Lightweight, ultra-flexible, and robust crosslinked transition metal carbide coated polyimide porous composites exhibit excellent EMI shielding performance and multifunctionalities, with promising perspectives in next-generation flexible electronics, aerospace, and smart devices.
NANO-MICRO LETTERS
(2022)
Article
Materials Science, Composites
Bozhen Wu, Yuhao Yang, Kaiqi Zhu, Shengyang Liu, Renrong Liu, Honghao Zhu, Yulin Li
Summary: This study proposes a method of using commercial carbon materials and polymer melt blending to construct conductive pathways, addressing the issues of high cost, inability to mass-produce, and poor dispersion of nanocarbon materials. This approach enables the fabrication of low-cost and robust polymer composites with efficient thermal management and electromagnetic radiation protection.
POLYMER COMPOSITES
(2023)
Review
Chemistry, Multidisciplinary
Yiming Chen, Yang Yang, Ye Xiong, Lin Zhang, Wenhui Xu, Gaigai Duan, Changtong Mei, Shaohua Jiang, Zhenhua Rui, Kai Zhang
Summary: Porous aerogel and sponge composites, with low density, high EMI shielding effectiveness, and good structural stability, have attracted great attention in the EMI shielding field, promising significant advancements in this domain.
Article
Polymer Science
Yun Luo, Cheng-feng Li, Xian He, Hang Xiao, Jiang-huai Hu, Ke Zeng, Gang Yang
Summary: An ultralight porous carbon foam with excellent EMI shielding properties was successfully prepared by coassembly of graphene oxide and the adenine-polyimide, showing high electrical conductivity and outstanding EMI performance in the X-band.
Review
Chemistry, Physical
Yunfei Yang, Mingrui Han, Wei Liu, Na Wu, Jiurong Liu
Summary: With the rapid development of the electronic industry and wireless communication technology, electromagnetic interference (EMI) has become increasingly serious, posing a significant threat to the normal operation of electronic equipment and human health. In response, the development of high-performance EMI shielding materials has become urgent. Hydrogel-based materials offer a novel option for EMI shields, providing good mechanical flexibility, fatigue durability, and stretchability for a wide range of applications, particularly in EMI shielding and flexible functional devices. This paper reviews the current progress of hydrogel-based EMI shields and includes novel studies on pore structure design that could advance the development of these materials. Promising development directions for hydrogel-based EMI shields are suggested as an outlook, aiming to provide a reference for designing hydrogels with excellent EMI shielding performance and multifunctionalities.
Article
Engineering, Environmental
Longhai Zhuo, Yaling Cai, Dong Shen, Pengfei Gou, Mingjun Wang, Guang Hu, Fan Xie
Summary: This study successfully fabricated lightweight materials with excellent EMI shielding performance by preparing polyimide-based hybrid foams with MXene and polyimide bilayer coatings. The bilayer coatings protected the materials from oxidation at high temperatures and converted electromagnetic waves into heat energy through ohmic losses, resulting in effective EMI shielding performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Leixin Deng, Chenyang Cai, Yangze Huang, Youming Dong, Yu Fu
Summary: By using green mechanochemistry, modified lignin fillers and multifunctional ZnO/Ag particles were prepared, while the introduction of bio-derived dopamine cross-linker and polypyrrole fibers effectively improved the electromagnetic interference shielding and conductive properties of PLA composites.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Green & Sustainable Science & Technology
Yi Jiang, Mingwei Liang, Weijing Wang, Xuefei Lai, Kenan Xie, Li Liao, Qin Long
Summary: Composites materials based on natural loofah sponges modified with Ni nanoparticles and graphene exhibit excellent electromagnetic shielding capabilities, demonstrating great potential in this field.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING-GREEN TECHNOLOGY
(2022)
Article
Polymer Science
Jan Kruzelak, Andrea Kvasnicakova, Klaudia Hlozekova, Roderik Plavec, Rastislav Dosoudil, Marek Goralik, Jarmila Vilcakova, Ivan Hudec
Summary: Rubber composites were fabricated with manganese-zinc ferrite and carbon-based fillers, and their electromagnetic parameters, thermal characteristics, and mechanical properties were investigated. The results showed that ferrite provided absorption shielding efficiency to the composites, with varying effects at different frequencies.
Article
Materials Science, Composites
Tiantian Xue, Zhipeng Fu, Dingyi Yu, Yao Yu, Zaiyin Hu, Wei Fan, Tianxi Liu
Summary: Novel EMI shielding fabrics designed based on polydopamine-assisted silver deposition on polyimide aerogel demonstrate ultra-high electromagnetic interference shielding performance due to their unique porous structure and high conductivity.
COMPOSITES COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Na Chu, Chunjia Luo, Xushuai Chen, Liuxin Li, Chaobo Liang, Min Chao, Luke Yan
Summary: With the development of electronic products, there is an urgent need for high-performance flexible electromagnetic interference (EMI) shielding materials to deal with electromagnetic pollution. In this study, two-dimensional transition metal carbide/polyimide (Ti3C2Tx MXene/PI) films were synthesized and found to have good EMI shielding effectiveness and electrical conductivity. These films show potential in the field of lightweight and flexible EMI shielding materials due to their comprehensive performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Polymer Science
H. Lecocq, G. Sudre, P. Alcouffe, O. Lhost, P. Cassagnau, A. Serghei
Summary: This study investigates the electromagnetic interference shielding properties of polypropylene-based composite materials filled with different metallic fillers. By utilizing guided electrical percolation, the shielding effectiveness of the composites is substantially enhanced, as observed through various experimental techniques and analyses.
Article
Engineering, Multidisciplinary
Jing Li, Mengjie Cui, Jiating Wen, Yi Chen, Bi Shi, Haojun Fan, Jun Xiang
Summary: Delicate microstructure design and suitable matrixes are crucial for advanced electromagnetic interference (EMI) shielding materials with lightweight, flexible, durable features. A leather-like composite with hierarchical structure shows superior EMI shielding effectiveness and strong abrasion resistance, providing stable and durable performance against various environmental factors.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Materials Science, Composites
Chao Liu, Wei Wu, Yi Wang, Zhengyi Wang, Qiming Chen
Summary: The research synthesized a novel filler@polymer hybrid (Ag@TPU) with excellent thermal conductivity and EMI shielding effectiveness for manufacturing dual-functional elastomer composites.
COMPOSITES COMMUNICATIONS
(2021)
Review
Chemistry, Physical
Ritesh Verma, Preeti Thakur, Ankush Chauhan, Rohit Jasrotia, Atul Thakur
Summary: The MXene family is rapidly expanding due to its properties such as high conductivity, water dispersibility, chemical tunability, easy processability, and thermal stability. MXenes can be combined with other materials to enhance their electromagnetic interference shielding properties. This review discusses the parameters and mechanisms related to shielding effectiveness and attenuation of EM waves.
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.