Article
Chemistry, Physical
Yu Zhang, Ming-Ke Xu, Zhenguo Wang, Tianyu Zhao, Liu-Xin Liu, Hao-Bin Zhang, Zhong-Zhen Yu
Summary: In this study, mechanically flexible and electrically conductive porous films were fabricated through a controlled hydrazine foaming process. The addition of MXene prevented excessive expansion of the film, improved electron conduction paths, and enhanced mechanical properties. The resulting porous film exhibited superior mechanical and electrical performances, as well as excellent electromagnetic interference shielding properties.
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)
Article
Nanoscience & Nanotechnology
Zhiming Deng, Pingping Tang, Xinyu Wu, Hao-Bin Zhang, Zhong-Zhen Yu
Summary: The study demonstrates a method to fabricate conductive lightweight aerogels with superelasticity and high thermal insulation by mimicking the plant Parthenocissus tricuspidata. These aerogels show high efficiency in EMI shielding applications and exhibit good thermal insulation performance. By controlling the composition ratio, the density and EMI shielding effectiveness of the aerogels can be adjusted accordingly.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Composites
Jing Li, Wenxin Zhang, Liying Yang, Shougen Yin
Summary: This study proposes an effective strategy for developing conductive fabrics by constructing a composite of carbon nanotube (CNT)/Ti3C2Tx MXene/polyaniline (PANI)/liquid metal (LM), which improves the performance of electromagnetic interference (EMI) shielding and Joule heating. The conductive fabrics decorated with CNT/Ti3C2Tx/PANI/LM exhibit high EMI shielding efficiency and absorbing shielding effectiveness, outperforming pristine MXene film and pure CNT layer. The EMI shielding performance can be further enhanced when three layers of conductive fabrics are combined. Additionally, the conductive textiles demonstrate excellent Joule heating performance. The combination of these components provides lightweight, flexible, and multifunctional conductive textiles with superior EMI shielding and efficient Joule heating capability, making them highly desirable for various applications.
COMPOSITES COMMUNICATIONS
(2023)
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)
Article
Polymer Science
Mingzheng Hao, Lei Li, Xiaoming Shao, Ming Tian, Hua Zou, Liqun Zhang, Wencai Wang
Summary: A novel method for fabricating highly conductive Al/Ag core-shell structured microspheres was proposed, resulting in high conductivity and excellent electromagnetic shielding effectiveness.
Article
Engineering, Environmental
Junpyo Hong, Jisung Kwon, Dohyun Im, Jeonggil Ko, Chae Yun Nam, Hyeong Gyu Yang, Sun Ho Shin, Soon Man Hong, Seung Sang Hwang, Ho Gyu Yoon, Albert S. Lee
Summary: Multiple conductive fillers were incorporated in a polypropylene matrix through melt processing. The properties of the composites, including electrical conductivity, thermal conductivity, and EMI shielding were examined based on different filler compositions. The study also investigated the correlation between electrical conductivity and EMI shielding properties using a theoretical model.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Polymer Science
Fengyu Wen, Shu Li, Rui Chen, Yashu He, Lei Li, Lin Cheng, Jierun Ma, Jianxin Mu
Summary: With the rapid development of new technologies, there is an increasing demand for electromagnetic interference shielding and thermal conductivity of electronic devices. In this study, hydroxyphenolphthalein type polyetherketone grafted carboxy carbon nanotube composites were prepared, demonstrating good thermal conductivity and excellent electromagnetic shielding performance.
Article
Agricultural Engineering
Panpan Yue, Zejian Leng, Jun Rao, Gegu Chen, Xiang Hao, Jing Bian, Mingqiang Zhu, Feng Peng
Summary: Eucommia ulmoides gum (EUG) is an eco-friendly and biodegradable novel polymer with properties of both rubber and plastic, showing excellent potential for conductive gasket material. A flexible, lightweight, and biodegradable composite was prepared via hot pressing, exhibiting advantageous properties such as mechanical performance, thermal stability, and electrical conductivity. The EUG-based composite also showed stable electrical conductivity under various physical and chemical damages, with increased effectiveness in electromagnetic interference shielding through higher carbon nanotubes content and film thickness. This green, degradable, and cost-effective strategy provides an alternative route for conductive gaskets amidst the growing misuse of nondegradable polymers, promoting the practical application of Eucommia ulmoides gum.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Chemistry, Physical
Rajesh Kumar, Sumanta Sahoo, Ednan Joanni
Summary: With the rapid progress in science and technology, the demand for electromagnetic interference (EMI) shielding and microwave (MW) absorption materials has been increasing. Layered materials, such as graphene, MXenes, and transition metal dichalcogenides (TMDs), have drawn significant research attention due to their conductivity, surface area, and porosity. The integration of these materials with other magnetic and dielectric constituents further enhances their electromagnetic absorption ability. This review article focuses on the recent progress, mechanisms, and future perspectives of layered materials in EMI shielding and MW absorption applications.
Article
Materials Science, Composites
Iqra A. Rashid, Asra Tariq, H. M. Fayzan Shakir, Ayesha Afzal, Fahad Ali, Muhammad Abuzar, Toseeq Haider
Summary: The study synthesized conductive epoxy/PAni blends with varying concentrations, demonstrating improved electrical conductivity and microwave absorption properties with increased aspect ratio of PAni in the epoxy. The composites showed low porosity, excellent EMI shielding performance, and potential applications in conductive coatings and electronic devices.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2022)
Article
Nanoscience & Nanotechnology
Xinyu Wu, Tingxiang Tu, Yang Dai, Pingping Tang, Yu Zhang, Zhiming Deng, Lulu Li, Hao-Bin Zhang, Zhong-Zhen Yu
Summary: This paper demonstrates the direct ink printing of customizable high-conductivity MXene frames using MXene/AlOOH inks for tuning EMI shielding efficiency and visualizing electromagnetic waves. The robust porous MXene frames with tunable EMI shielding efficiencies can be fabricated through immersion and freeze-drying.
NANO-MICRO LETTERS
(2021)
Article
Engineering, Manufacturing
Wenjing Yuan, Haitao Liu, Xihua Wang, Li Huang, Fuxing Yin, Ye Yuan
Summary: An intelligent EMI shielding switch has been developed to achieve both microwave shielding and transmitting functions on a single material. The switch can smartly regulate its absorption-dominant EMI SE value in the S-band, providing a novel solution for actual wireless communication needs through simple operation.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Polymer Science
Amir Hosein Ahmadian Hoseini, Elnaz Erfanian, Milad Kamkar, Uttandaraman Sundararaj, Jian Liu, Mohammad Arjmand
Summary: This study demonstrates the potential application of non-recyclable plastic waste in the development of electrically conductive nanocomposites. PS/Waste/CNT system shows higher electrical conduction and improved electromagnetic interference shielding performance compared to PS/CNT system, indicating a better conductive network of CNTs.
Article
Chemistry, Multidisciplinary
Xue Tan, Te-Huan Liu, Wenjiang Zhou, Qilong Yuan, Junfeng Ying, Qingwei Yan, Le Lv, Lu Chen, Xiangze Wang, Shiyu Du, Yan-Jun Wan, Rong Sun, Kazuhito Nishimura, Jinhong Yu, Nan Jiang, Wen Dai, Cheng-Te Lin
Summary: The rapid advancement of miniaturized devices in terms of operation speed, transmission efficiency, and power density has led to an increasing demand for electromagnetic interference (EMI) shielding and thermal management materials in the semiconductor industry. This study proposes a fold fabrication strategy to enhance the EMI shielding and thermal conductive properties of commonly used polyolefin components (such as polyethylene) by incorporating premodified MXene nanosheets and a well-aligned, seamless graphene framework into the matrix. The results demonstrate that nanoscale interface engineering can further improve the physical properties of the composites, enabling high-performance polymer composites for use in microelectronics and microsystems.
Article
Mechanics
Cindy Le Hel, Veronique Bounor-Legare, Antoine Lucas, Anthony Thevenon, Philippe Cassagnau
Summary: This study investigated the elastic recovery of EPDM samples crosslinked by different agents, finding that radically crosslinked EPDM exhibited better recovery properties. The Chasset-Thirion equation successfully fit the experimental relaxation curves, showing that peroxide-crosslinked networks had superior elastic recovery. Additionally, the influence of fillers on elasticity recovery was studied, with carbon black enhancing recovery and silica fillers leading to decreased properties due to induced crosslinking gradients.
Article
Polymer Science
Benoit Rainglet, Yvan Chalamet, Veronique Bounor-Legare, Karim Delage, Charlene Forest, Philippe Cassagnau
Summary: This study focused on the development of low-density polypropylene (PP) foams using a CO2 batch process by modifying PP-g-MA through reactive extrusion. Two reagent systems based on chemical reactions and ionic interactions were compared to commercial high-melt-strength PP. The branched structure of polymer chains was defined based on rheological criteria, and a theoretical power law was derived to predict cell growth during depressurization based on experimental rheological behavior.
Article
Engineering, Chemical
Anatole Collet, Anatoli Serghei, Olivier Lhost, Yves Trolez, Philippe Cassagnau, Rene Fulchiron
Summary: This study aims to describe the conductivity evolution of polymer composites during shearing deformation. The experiment results show that the conductivity evolves asymptotically to a steady level, and a model is proposed to predict the conductivity evolution under shear deformation. Structural parameters are mainly dependent on temperature, while shear-induced modification terms are driven by shear rate and fillers content.
POLYMER ENGINEERING AND SCIENCE
(2021)
Article
Engineering, Chemical
Luisa Barroso Gago, Mathilde Auclerc, Karim Delage, Nicolas Garois, Philippe Cassagnau, Veronique Bounor-Legare
Summary: In this study, an epoxy-based thermosetting phase was created in a polypropylene matrix, compatibilized by PP-g-MA. The dispersed phase formed had a diameter of approximately 0.5 μm, leading to an increase in Young's modulus by up to 24% while maintaining resilience. Wide angle X-ray scattering analysis showed that the thermosetting phase acted as a beta nucleating agent, resulting in excellent toughness and impact strength.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Materials Science, Composites
Clementine Beutier, Laurent David, Guillaume Sudre, Philippe Cassagnau, Patrick Heuillet, Bernard Cantaloube, Anatoli Serghei
Summary: The study demonstrates a relationship linking the evolution of electrical conductivity during mechanical deformation to the mechanical Mullins effect, revealing a characteristic electrical signature. Significant differences between the electrical and mechanical Mullins effects are found, particularly in the kinetics of property stabilization after the first mechanical deformation cycle.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Fanny Casteran, Karim Delage, Nicolas Hascoet, Amine Ammar, Francisco Chinesta, Philippe Cassagnau
Summary: This article investigates two main problems: the controlled thermo-mechanical degradation of polyethylene using the extrusion process for recycling applications, and the data-based modelling of reactive extrusion processes. The study utilizes experiments, numerical methods, and machine learning techniques to address these issues and successfully predicts process outputs and material characteristics.
Article
Chemistry, Applied
Benoit Rainglet, Cindy Le Hel, Yvan Chalamet, Veronique Bounor-Legare, Charlene Forest, Philippe Cassagnau
Summary: The objective of this study is to investigate the ability of thermoplastic vulcanizates (TPVs) to foam under CO2 batch conditions. The study found that the crosslinking chemistry and non-linear viscosity have significant effects on the extensional viscosity and deformation ability of TPVs. These findings are important for evaluating the foaming behavior of multi-phasic polymers.
JOURNAL OF CELLULAR PLASTICS
(2022)
Article
Engineering, Chemical
Benoit Rainglet, Lucas Verron, Yvan Chalamet, Veronique Bounor-Legare, Karim Delage, Charlene Forest, Philippe Cassagnau
Summary: This work focuses on reactive extrusion to design polypropylene chains with different branching for the synthesis of low-density foams. The study finds that a combination of different systems is needed to achieve optimal rheological behavior and foam properties. Additionally, the foaming behavior of polypropylene/polyamide 6 blends is investigated to control the rheology and foam behavior.
MACROMOLECULAR REACTION ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Cindy Le Hel, Pierre Alcouffe, Antoine Lucas, Philippe Cassagnau, Veronique Bounor-Legare
Summary: The localization of carbon black filler in PP/EPDM thermoplastic vulcanizate was found to be dependent on the type of crosslinking chemistry, with phenolic resin leading to rubber phase localization and dicumyl peroxide leading to interface localization.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Polymer Science
Felix Odet, Noellie Ylla, Rene Fulchiron, Philippe Cassagnau
Summary: The recyclability of opaque PET has been assessed in this study by producing high-speed melt-spun filaments with different amounts of opaque PET blended with standard recycled PET. The addition of opaque PET and TiO2 decreases the crystallinity, orientation of crystalline and amorphous phases, and tenacity. However, TiO2 particles are not solely responsible for the decrease in mechanical properties of opaque PET filaments.
Article
Polymer Science
Charlotte Dubois, Catherine Marestin, Philippe Cassagnau, Karim Delage, Pierre Alcouffe, Nicolas Garois, Veronique Bounor-Legare
Summary: Polypropylene/polyimide (PP/PI) blends were synthesized by reactive extrusion with the in situ polymerization of the polyimide phase. The in situ approach demonstrated clear advantages over the more classical dispersion process. The blends exhibited improved mechanical properties and thermal stability, with significant impact on rheological behavior.
Article
Polymer Science
Clementine Beutier, Anatoli Serghei, Philippe Cassagnau, Patrick Heuillet, Bernard Cantaloube, Nathan Selles, Isabelle Morfin, Guillaume Sudre, Laurent David
Summary: In this study, in situ coupled mechanical/electrical/WAXS/SAXS investigations were carried out on EPDM-based composite materials filled with carbon black (CB) under uniaxial tensile stretching. The study reveals the correlation between the electrical conductivity and the microstructural state of the composite, providing insights into the mechanisms governing the structure/properties relationships with increasing deformation. The formation of nanovoids at large deformations leads to a significant decrease in conductivity. This study contributes to a better understanding of the conductivity/strain relationships of carbon black filled elastomers and has potential applications in developing smart rubber materials.
Article
Polymer Science
Benoit Rainglet, Paul Besognet, Cyril Benoit, Karim Delage, Veronique Bounor-Legare, Charlene Forest, Philippe Cassagnau, Yvan Chalamet
Summary: This work focuses on the extrusion foaming under CO2 of commercial TPV and how the process influences the final morphology of the foam. Moreover, numerical modelling of the cell growth of the extrusion foaming is developed. The results show how a precise control on the various parameters can provide a homogeneous foam with low density, and propose a model to predict the influence of CO2 on the flow. The study also presents a global model to simulate the extrusion process and foaming inside and outside the die.
Article
Materials Science, Multidisciplinary
Felix Odet, Noellie Ylla, Karim Delage, Philippe Cassagnau
Summary: This study evaluates the spinnability of recycled poly(ethylene terephthalate) (rPET) modified by chain extenders. The results show that Pyromellitic anhydride (PMDA) and JONCRYL ADR 4400 have a more significant effect on increasing melt strength and melt elasticity compared to 2,2'-bis(2-oxazoline) (BOZ) and 1,3-phenylene-bis-oxazoline (PBO) due to chain branching. Furthermore, PMDA and JONCRYL decrease the spinnability and properties of filaments, while BOZ improves the tenacity of opaque rPET filaments while decreasing their degree of crystallinity.
ACS APPLIED POLYMER MATERIALS
(2022)
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.
