Article
Polymer Science
Song Hee Lee, Ji Hun An, Yeong Jae Kim, Seong Jae Lee
Summary: Electrically conductive polystyrene/carbon nanotube (CNT) microcellular foams were prepared using a HIPE polymerization technique. Modification of CNTs with polypyrrole (PPy) improved the electrical conductivity and dispersibility of the foams. The addition of PPy-CNTs significantly enhanced the rheological properties and crush strength of the foams.
Article
Chemistry, Physical
Zheng Zheng, Yongliang Zhao, Zhangfan Ye, Jianhua Hu, Haitao Wang
Summary: A facile method to prepare lightweight ECPCs with a well-controlled segregated structure via Ti3C2Tx-stabilized HIPE templating is proposed in this work. The Ti3C2Tx flakes are mainly immobilized at the water-oil interface and eventually form the segregated network in composites. The prepared porous polymer composites exhibit good conductivity even with ultralow Ti3C2Tx content.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Hye-Jin Lee, Nan Zhang, Mohamed A. Ganzoury, Yichen Wu, Charles-Francois de Lannoy
Summary: This study demonstrates the simultaneous chlorine removal and oxidation of organic compounds during filtration using an electrochemically assisted electrically conductive carbon nanotube (CNT) membrane. The efficacy of chlorine removal by CNT membranes depends on the mass of CNTs within the membranes and the applied pressure.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Construction & Building Technology
Suthisa Onthong, Edgar A. O'Rear, Thirawudh Pongprayoon
Summary: The concurrent polymerization of polyindole (PIn) and polyvinyl acetate (PVAc) on the surface of MWCNTs creates a bifunctional coating that improves the dispersion and conductivity of the MWCNTs in the cement matrix. The AP-coated MWCNTs showed good colloidal stability and high electrical conductivity. Adding AP-coated MWCNTs to cement significantly increased the electrical conductivity and compressive strength of the composite, creating a network for electrical flow.
MATERIALS AND STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Le N. M. Dinh, Bich Ngoc Tran, Vipul Agarwal, Per B. Zetterlund
Summary: This study explores the effects of different preparation methods on polymer nanocomposite materials, and finds that the stability and physical properties of the nanocomposite films are greatly influenced by the preparation method and compositional details.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Engineering, Chemical
Jeong Hoon Lee, Eun-Tae Yun, So-Young Ham, Han-Shin Kim, Peng-Fei Sun, Hee-Deung Park
Summary: Biofouling is a significant issue in membrane-based filtration processes. Conductive membranes, such as carbon nanotube/graphene membranes, show promise in fouling mitigation. This study demonstrates that a high-stability CNT/graphene membrane can achieve efficient water flux recovery by combining physical and chemical/biological cleaning methods.
Article
Polymer Science
Song Hee Lee, Hong Hee Shin, Seon Gyeom Kim, Seong Jae Lee
Summary: A highly conductive carbon foam with a high specific surface area was fabricated using a microporous polymer foam template. The cell size, electrical conductivity, and compressive properties of the foam were controlled by the polymerization, sulfonation, and carbonization processes. The sulfonated carbon foam showed improved electrical conductivity and thermal stability.
Article
Polymer Science
Zhouyu Liu, Dong Xiang, Tian Qiu, Zhen Li, Chunxia Zhao, Hui Li, Zhenyu Li, Li Wang, Ping Wang, Yuntao Li, Yuanpeng Wu
Summary: In this study, a stretchable and compressible strain sensor was developed using conductive porous carbon nanotubes/polydimethylsiloxane (CNT/PDMS-P) high internal phase emulsion (HIPE). The CNT/PDMS-P sensor exhibited lower percolation threshold, improved sensitivity, and cyclic stability compared to the non-porous composite (CNT/PDMS). The sensor also showed potential applications in various scenarios, such as human body movement perception, facial movement, gesture transformation, and human-computer interaction.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Analytical
Jie Xue, Chenxue Yao, Ning Li, Yan Su, Lijian Xu, Shifeng Hou
Summary: A highly sensitive electrochemical sensor for dopamine detection was fabricated using polydopamine and carbon black-graphene oxide composite, exhibiting excellent oxidation performance and selectivity towards dopamine with a wide linear detection range and low detection limit. The sensor prepared by a facile approach without metal elements showed promising results for detecting dopamine in biological fluids.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Materials Science, Composites
Zhen Yu, Cong Wang, Xin Zhang, Ajit Dattatray Phule, Yongxian Zhao, Shibao Wen, Zhen Xiu Zhang
Summary: A eco-friendly method for preparing EVM/CNTs composite foam using supercritical N-2 as a foaming agent was reported in this study, showing good electrical conductivity and self-healing ability. The foam exhibited excellent performance in supporting LED lamp circuits and self-healing.
COMPOSITES COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Dong Lu, Yanlin Huo, Zhisheng Jiang, Jing Zhong
Summary: A new strategy of developing a three-dimensional conductive network in cement mortar by coating sand with graphene is proposed. This design embeds the interfacial transition zone (ITZ) directly in the conductive network, resulting in high piezoresistive performance. The strategy is extended to concrete, and conductive aggregates with high conductivity are obtained by coating with carbon nanotube polymer slurry.
Article
Engineering, Chemical
Minyuan Han, Yuting Wang, Jingmei Yao, Caihong Liu, Jia Wei Chew, Yi Wang, Yingchao Dong, Le Han
Summary: This study focused on enhancing oil-membrane electrostatic repulsion in electricity-assisted membrane distillation using electrically conductive hydrophobic membrane. By coating carbon nanotubes on commercial membranes to fabricate membrane cathodes, the modified membrane showed significantly less flux decline in dealing with high-concentration oil emulsions. The anti-oil fouling robustness was confirmed through continuous operation cycles, and the study highlighted the role of electrically conductive membrane cathodes in modulating foulant-membrane interactions at the triple-phase interface to mitigate fouling/wetting issues.
Article
Engineering, Manufacturing
Qiang Chen, Qingsen Gao, Xin Wang, Dirk W. Schubert, Xianhu Liu
Summary: This study presents a pressure sensor based on TPU/PDA/MXene conductive composite foam, which exhibits excellent flexibility, fast response times, and durability. The sensor shows excellent recognition ability for different compressive strain amplitudes and stress ranges, and has potential applications in voice recognition, health monitoring, motion monitoring, and artificial electronic skin.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Engineering, Environmental
Wei Zhang, Nick Guan Pin Chew, Orlando Coronell
Summary: This article presents a facile method for fabricating electrically conductive membranes (ECMs) with diverse performance by using polyethylenimine (PEI), glutaraldehyde, and various conductive materials. The method allows for the casting of an electrically conductive layer on different substrates, ranging from microfiltration to reverse osmosis membranes. The authors demonstrate the stability and effectiveness of ECMs fabricated using graphite and PVDF membranes. They also show that the method is suitable for other conductive materials such as carbon nanotubes, reduced graphene oxide, activated charcoal, and silver nanoparticles. Compared with the substrates used for their fabrication, ECMs exhibit improved solute rejection and reduced water permeance. Overall, this work provides a promising strategy for the fabrication of ECMs for environmental applications.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Pietro Cataldi, Leonardo Lamanna, Claudia Bertei, Federica Arena, Pietro Rossi, Mufeng Liu, Fabio Di Fonzo, Dimitrios G. Papageorgiou, Alessandro Luzio, Mario Caironi
Summary: Edible electronics, which can be digested or degraded in the body or environment after performing specific functions, will enable point-of-care testing. To make this technology thrive, a library of materials is required as the basic building blocks of edible platforms. This study proposes edible conductive pastes made with green methods and food derivatives that can be ingested in large amounts without posing risks to human health. These conductive materials are compatible with industrial manufacturing processes and have tunable electromechanical features and adhesion.
ADVANCED FUNCTIONAL 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.