Article
Polymer Science
Wenxiang Fang, Guixue Liang, Jiang Li, Shaoyun Guo
Summary: This research investigated the interfacial micropore formation mechanism of PA6/PP membranes during biaxial stretching. It was found that different forms of PA6 particles lead to different interfacial micropore formation mechanisms. The study provided insights into the optimization of membrane pore structure and performance through controlling the stretching process and interface separation.
Article
Chemistry, Physical
Sijia Qin, Sai Zhang, Min Chen, Limin Wu
Summary: In this work, 3D ordered macro-microporous metal-organic frameworks (3DOM MOFs) were successfully fabricated as centimeter-scale films using electrochemical deposition. These films exhibited periodic macropores and could be tuned for structural color and optical selectivity towards simple alcohols.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Polymer Science
Xintu Lin, Yuejun Liu, Ruijie Jin, Yong Peng
Summary: The effect of uniaxial and biaxial stretching on the structures and properties of stretch-oriented PA6/PA1010 films was investigated. Uniaxial stretching induced the transition from beta-form to alpha + gamma phase and preferred orientation along the stretching direction, while biaxial stretching showed the transition from beta-form to alpha phase and no preferred orientation. The increased stretching ratios improved the melting temperature, crystallinity, and oxygen barrier property of the stretched films. Morphological analysis revealed orientation and deformation of PA1010 particles along the stretching direction without debonding or voids at the interface. The mechanical properties of the stretched films were highly dependent on the stretching ratios, with biaxially stretched films showing significantly higher tensile strength than the cast film.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Qi Zhang, Tianci Zhang, Yang Zhou, Chunhai Li, Hong Wu, Shaoyun Guo
Summary: The paper achieves a mesh-like crystal structure of ultrahigh molecular weight polyethylene (UHMWPE) films through a two-step biaxial stretching mode, which increases the in-plane thermal conductivity.
Article
Polymer Science
Xintu Lin, Yincai Wu, Shuhong Fan, Xi Chen, Yuejun Liu, Xiaochao Liu, Wei Zheng
Summary: The purpose of this study was to investigate the structural evolution and properties of biaxially stretched PA6/PEBA films. The melting temperature of PA6 increased with stretching ratios, indicating beta -> alpha crystal transformation. The increase in stretching ratios also increased crystallinity and oxygen barrier performance of the films. The morphology showed dispersed PEBA particles in the PA6 matrix. The thermal shrinkage of the stretched films increased with stretching ratios, while the tensile strength exhibited the highest value at a specific stretching ratio.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Kanghwan Ahn, Ji Hoon Kim
Summary: A theoretical model was proposed to account for the localized necking of sheet metal under biaxial stretching condition. By assuming that the deformation of sheet metal becomes locally inhomogeneous after the onset of diffuse necking, the model successfully predicted the distribution of limit strains in the experiments. This study is of great importance for understanding the localized necking phenomenon in sheet metal.
MECHANICS OF MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Haozhen Dou, Mi Xu, Baoyu Wang, Zhen Zhang, Guobin Wen, Yun Zheng, Dan Luo, Lei Zhao, Aiping Yu, Luhong Zhang, Zhongyi Jiang, Zhongwei Chen
Summary: Microporous framework membranes, including MOF membranes and COF membranes, offer great potential to address the tradeoff between membrane permeability and selectivity, making them promising candidates for future membrane technology. The past five years have seen a surge in novel membrane materials and applications in this field.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Yuhan Wang, Haifei Jiang, Zheyuan Guo, Hanze Ma, Shaoyu Wang, Hongjian Wang, Shuqing Song, Junfeng Zhang, Yan Yin, Hong Wu, Zhongyi Jiang, Michael D. Guiver
Summary: This article discusses the progress in advanced organic microporous membranes for carbon emission reduction and capture, focusing on confined mass transport mechanisms, design principles, and CO2 separation applications. The authors analyze the abnormal confinement effect in organic microporous membrane channels and propose design principles such as nano-assembly engineering, reticular engineering, and microenvironment engineering. They also summarize four categories of organic microporous membrane materials, namely polymers of intrinsic microporosity, graphene oxide, metal-organic framework, and covalent organic framework. Lastly, the article provides a perspective on the opportunities and challenges for the transition from advanced membranes to real-world applications.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Multidisciplinary Sciences
Jean-Baptiste Fleury, Vladimir A. Baulin
Summary: Millions of tons of plastic are dumped into oceans annually. Microplastics, commonly found in living organisms, can lead to increased membrane tension, potentially reducing membrane lifetime.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Engineering, Chemical
Shulong Zeng, Hailing Zhu, Zhaogang Liu, Li Li
Summary: By combining solid-state shear milling and biaxial stretching technologies, high-performance and environmentally friendly poly(vinyl alcohol)/kaolin barrier films were fabricated. The in situ exfoliation and dispersion of layered kaolin in the poly(vinyl alcohol) matrix were achieved, leading to improved physical and barrier properties of the composite film.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Review
Chemistry, Physical
Yanfei Yang, Wankai Wang, Guilin Meng, Junping Zhang
Summary: This review provides an overview of the state-of-the-art research on the function-directed design of microporous polyolefin membrane (MPM) separators. It highlights the challenges associated with conventional MPM separators, methods for preparation of MPM-based functional separators, and their main functions in improving electrolyte wettability, enhancing thermal stability, inhibiting intermediate product shuttling, and stabilizing metal anodes. The insights from this review show that MPM-based functional separators significantly enhance the performance and safety of batteries, and the rational design of advanced separators will play an increasingly important role in the development of next-generation high-energy-density batteries.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Materials Science, Multidisciplinary
S. Shrikanth, Rajesh Prasad, Kevin M. Knowles
Summary: This article provides formulas for the biaxial moduli and their principal values of single crystal cubic thin films under equibiaxial strain, and investigates the relationship between shear strains and out-of-plane normal strains. The results show that the stationary points of the biaxial modulus lie on specific crystal surface orientations.
Article
Polymer Science
Shulin Men, Zhihao Gao, Rongyan Wen, Jie Tang, Jian Min Zhang
Summary: Polyvinylidene fluoride-based separators for secondary battery have been extensively studied using a melt extrusion-stretching (MES) process to prepare high performance PVDF microporous membranes. The use of a blend of different molecular weight PVDF grades and annealing treatment led to a preferable crystalline structure for stretching, resulting in a PVDF membrane with high porosity and superior tensile strength. Interestingly, the increase of beta phase content during stretching was insignificant, indicating that the formation of micropores/microfibrils in the stretching process played a key role in stress relaxation and less crystalline structure conversion.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Review
Materials Science, Multidisciplinary
Xiaoyu Chen, Dong Xiang, Zuoxin Zhou, Yuanpeng Wu, Hui Li, Chunxia Zhao, Yuntao Li
Summary: Polymer nanocomposites prepared by biaxial stretching exhibit excellent physical and chemical properties, multifunctional performance, and are suitable for the packaging industry. With the advancement of new materials and technologies, their range of applications continues to expand.
FRONTIERS IN MATERIALS
(2021)
Article
Multidisciplinary Sciences
Zongyao Zhou, I-Chun Chen, Lubna M. Rehman, Ammar M. Aboalsaud, Digambar B. Shinde, Li Cao, Yuting Zhang, Zhiping Lai
Summary: Inspired by natural light-gated ion channels, an artificial light-gated ion channel membrane was developed using conjugated microporous polymers. Through precise control of pore size and thickness on a molecular level, the membrane exhibited uniform pore size and highly sensitive light-switchable response for reversible ion transport.
Article
Polymer Science
Shengyao Feng, Jianhe Zhu, Wancheng Yu, Hang Guo, Wei Chen, Ai Lu, Liangbin Li
Summary: This study investigates the structural evolution of the crystalline domain of polybutene-1 (PB-1) using ultrafast time-resolved synchrotron radiation wide-angle X-ray diffraction and a high-speed tensile apparatus. The study reveals that the stretching-induced phase transition of PB-1 consisting of form II crystals depends on the strain rate and the accompanying heating effect. The study also demonstrates that the appearance and growth of conformational defects play a significant role in the phase transition between the crystalline and amorphous structures.
Article
Materials Science, Multidisciplinary
D. M. D. Babiker, R. Yu, Z. R. Usha, W. Chen, X. Chen, L. Li
Summary: This study successfully develops an advanced nanocomposite separator with commercialization potential by combining the industrialized biaxial stretching technique with the electron beam irradiation cross-linking method. The modified separator exhibits outstanding electrolyte uptake, excellent ionic conductivity, and higher current density capability.
MATERIALS TODAY PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Xiaoyu Min, Tong Wu, Xueqing Han, Minfang An, Wancheng Yu, Liangbin Li
Summary: This study reports the synthesis of benzoylated cellulose acetate (BCA) films and investigates their birefringent properties. It is found that zero-zero birefringence films can be achieved by chemical modification and stretching. Additionally, increasing the degree of substitution of benzoyl leads to lower birefringence in the films.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Engineering, Chemical
Zubaida Rukhsana Usha, Dafaalla M. D. Babiker, Rui Yu, Junsheng Yang, Wei Chen, Xin Chen, Liangbin Li
Summary: This study demonstrated a stable and large-scale super hydrophilic and underwater superoleophobic membrane, which achieved permanent high-efficiency separation performance through special treatment and modification, and can be widely used for water separation from oily wastewater.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Polymer Science
Lixian Song, Shalin Patil, Yingze Song, Liang Chen, Fucheng Tian, Le Chen, Xueyu Li, Liangbin Li, Shiwang Cheng
Summary: We investigate the clustering and viscoelastic properties of polymer nanocomposites (PNCs) with non-attractive polymer-nanoparticle (NP) interactions using X-ray tomography and rheology. It is found that the NP clusters have linear and compact structures with preferential orientations, and changing the polymer-NP interactions from strongly repulsive to nearly athermal does not significantly affect the clustering and percolation behavior of the NP phase. Moreover, the mechanical reinforcement of PNCs is weak, contrary to the strong NP clustering observed from structural characterizations.
Article
Chemistry, Multidisciplinary
Rui Yu, Xunshuang Zhang, Yanran Lu, Wei Chen, Xin Chen, Liangbin Li
Summary: Polyethylene nanofibrous membranes (PENFMs) modified by one-step grafting strategy, called amidoximated membrane (AM) adsorbents, show supreme uranium uptake capacity and long service life. AM adsorbents exhibit excellent hydrophilicity, good adsorption capacity, and outstanding affinity for uranium. They can be reused for more than 10 cycles and have broad potential in the industrialization of uranium extraction from seawater.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Review
Polymer Science
Cui Nie, Fan Peng, Renkuan Cao, Kunpeng Cui, Junfang Sheng, Wei Chen, Liangbin Li
Summary: This review summarizes the recent achievements in flow-induced crystallization (FIC) of polymers in the past five years. It discusses FIC models and theories, FIC experiments under controlled flow and complex processing conditions, and the advances in FIC computer simulation. Understanding FIC is crucial for optimizing polymer processing parameters and studying phase transitions under non-equilibrium conditions.
JOURNAL OF POLYMER SCIENCE
(2022)
Article
Polymer Science
Xueyu Li, Feng Luo, Tao Lin Sun, Kunpeng Cui, Reina Watanabe, Tasuku Nakajima, Jian Ping Gong
Summary: Understanding the mechanical behaviors of tough hydrogels with dynamic bonds in saline solution is crucial for applications, especially in the biomedical field.
Review
Chemistry, Physical
Dafaalla M. D. Babiker, Zubaida Rukhsana Usha, Caixia Wan, Mohmmed Mun ELseed Hassaan, Xin Chen, Liangbin Li
Summary: This review article summarizes the fundamental requirements and properties of ideal separators for lithium-ion batteries (LIBs) and sodium-ion batteries (NIBs). Different types of battery membranes are discussed, and the fabrication and development of hybrid composite separators based on porous polyethylene (PE) membranes are described. The article also discusses advanced battery separators and compares various preparation processes for high-performance hybrid PE separators. Finally, the article provides a brief outlook for future trends in this research area.
JOURNAL OF POWER SOURCES
(2023)
Article
Polymer Science
Changzhu Lv, Hang Guo, Shengyao Feng, Qi Yan, Chunlei Xu, Wancheng Yu, Liangbin Li, Kunpeng Cui
Summary: In this study, the deformation mechanism of amorphous polymeric materials was investigated using ultrasmall-angle X-ray scattering. A stretch-induced phase separation behavior was observed in plasticized poly(vinyl butyral) (PVB) for the first time. The phase separation is influenced by stress concentration and the network structure, and the phase size increases with strain.
Article
Polymer Science
Dongmei Huang, Yun Dong, Hang Guo, Erjie Yang, Yiwen Chen, Mi Luo, Ziwen Pan, Jiandang Liu, Liangbin Li, Hongjun Zhang, Bangjiao Ye
Summary: Using the newly developed high count rate positron annihilation lifetime spectroscopy (PALS) facility, in situ PALS experiments were performed for the first time on the continuous stretching process of polymers to analyze the minute-scale evolution of free-volume holes. The tensile process was divided into four distinct stages based on the stress-strain relationship and PALS results, showing the enlargement of free-volume hole size and increasing anisotropy of free-volume holes. This work demonstrates the feasibility of disclosing the minute-scale evolution of material microstructure through in situ PALS experiments.
Article
Biochemistry & Molecular Biology
Guobo Chen, Xiang Wang, Zongyan He, Xueyu Li, Zhijin Yang, Yule Zhang, Yuhao Li, Lulu Zheng, Yuqing Miao, Dawei Zhang
Summary: In this work, a light-triggered reactive oxygen species (ROS) damaging nanoamplifier (IrP-T) was developed for enhanced photodynamic therapy (PDT). The IrP-T catalyzed the oxygen in cells to generate ROS under green light stimulation, while TH287 increased the accumulation of 8-oxo-dGTP, further strengthening oxidative stress and inducing cell death. IrP-T maximized the use of a small amount of oxygen, thus boosting the efficacy of PDT in hypoxic tumors. The construction of nanocapsules provided a valuable therapeutic strategy for oxidative damage and synergizing PDT.
Article
Chemistry, Multidisciplinary
Liang Li, Min Hu, Changlong Hu, Bowen Li, Shanguang Zhao, Ting Zhou, Jinglin Zhu, Meiling Liu, Liangbin Li, Jun Jiang, Chongwen Zou
Summary: This paper proposes a new method to achieve ultrafast H transport in the WO3 layer by using an acid solution/WO3/ITO sandwich structure, which solves the problem of mass storage and removal in solids. The experiments show that this approach can be extended to the study of other atoms and oxides.
Article
Engineering, Environmental
Zubaida Rukhsana Usha, Dafaalla M. D. Babiker, Yilei Zhao, Xin Chen, Liangbin Li
Summary: The use of advanced polymeric membrane-based separation technology with layer-by-layer modification technique has proven to be effective in preventing contaminations and achieving efficient water separation from oily wastewater. The modified membrane exhibits excellent superhydrophilic and underwater superoleophobic properties, leading to high separation efficiency and permeate flux. It also possesses antibacterial properties and can remove multiple pollutants from oily wastewater in an energy-efficient manner.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Xuepeng Zhang, Junkai Liu, Biao Chen, Xuewen He, Xueyu Li, Peifa Wei, Peng Fei Gao, Guoqing Zhang, Jacky W. Y. Lam, Ben Zhong Tang
Summary: This study presents a guest/host system (NL/DCB) with high RTP quantum yield and ultralong lifetime at room temperature. The efficient RTP of the NL/DCB system is mainly attributed to the formation of cluster excitons, which boost the RTP efficiency and allow for fast and ultrasensitive detection of hazardous VOCs.
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.
