Article
Polymer Science
Jingwei Jiang, Zhichao Wang, Yunlong Sun, Zengxu Qian, Zengwen Cao, Zhipeng Wang, Guangyuan Zhou
Summary: This study successfully synthesized novel polymer materials with low dielectric constant, good thermal resistance, and mechanical properties, and elucidated the relationship between dielectric constant and the number of methylene groups by constructing a model. The obtained polymer material has significant application value in the field of high-frequency communications.
Article
Polymer Science
Huijuan Li, Miao Yi, Xin Yin, Wenliang Wu, Shiai Xu
Summary: The objective of this study is to prepare a new poly(aryl ether ketone) (PAEK) with low dielectric constant, high transparency and heat resistance by introducing fluorine atoms and phenolphthalein (PHPH) groups into the polymer backbone. The chemical structure, molecular weight and solubility of PAEK random copolymers were characterized by various analytical techniques. Transparent and flexible films were prepared from DMAc solvent, exhibiting high glass transition temperature, thermal stability, mechanical strength and excellent optical properties.
EXPRESS POLYMER LETTERS
(2023)
Article
Polymer Science
Qian Liu, Shouhai Zhang, Zhaoqi Wang, Nan Li, Yuning Chen, Peiqi Xu, Xigao Jian
Summary: High molecular weight poly(aryl ether ketone ketone)s with diphenyl-biphthalazin-dione moieties were synthesized through solution condensation. The addition of mixed diphenyl-biphthalazin-dione monomer affected the performance of the polymers, particularly through the introduction of side phenyl groups for solubility and controllable contact angle. The resulting polymers exhibited excellent thermal stability, solubility in specific solvents, and mechanical properties.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Polymer Science
Hongjian Gu, Cheng Liu, Qian Liu, Yu Zhang, Meng Wang, Xi Chen, Yousi Chen, Jinyan Wang, Xigao Jian
Summary: A series of poly(bisphthalazinone ether sulfone ketone)s with pendant phenyl groups (POPESKs) were synthesized and their thermal degradation mechanism was investigated. The POPESKs showed good solubility in various organic solvents and exhibited excellent film-forming property. The polymer films had high transparency and water contact angles in the range of 82.3-94.3 degrees. The overall performance of POPESKs indicated great potential in aerospace, petrochemical, and energy applications.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Meiqi Ling, Kaifeng Yu, Jian Wang, Zhipeng Wang, Guangyuan Zhou
Summary: With the rapid development of 5G technology, low dielectric constant materials have a wide range of applications in microelectronic devices. In this study, a novel poly(aryl ether ketone) resin with low dielectric constant and good thermal stability, mechanical properties, and insulation properties was successfully synthesized.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Polymer Science
Qian Liu, Shouhai Zhang, Lin Zhuo, Peiqi Xu, Fanchen Sun, Jie Zhang, Xigao Jian
Summary: Poly(aryl ether ketone)s containing bis-phthalazinone units (PBPEK-Ps) with improved solubility and thermal resistance were synthesized by one-pot condensation polymerization. The effect of solvents on the copolymerization behavior of PBPEK-Ps was investigated. The structure characteristics of the polymers were identified through infrared absorption spectrum and nuclear magnetic resonance spectra. PBPEK-Ps showed favorable thermo-stability, with glass transition temperatures ranging from 256 to 305 degrees C. They also exhibited storage modulus preservation of over 58% at 250 degrees C, a tensile strength of 111 MPa, and excellent solubility in chloroform and N-methylpyrrolidone. PBPEK-Ps also demonstrated favorable insulation performance.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Materials Science, Composites
Lan Jin, Jie Liu, Lixue Zhu, Jiale Ding, Yunhe Zhang, Zhenhua Jiang
Summary: By synthesizing a crosslinkable poly (aryl ether ketone) matrix and functionalizing boron nitride nanosheets, a novel nanocomposite with stable chemical bonding structure at interfaces via Diels-Alder reaction was obtained. The nanocomposites exhibit high breakdown strength, excellent dielectric stability at high temperature, significantly improved discharged energy density, and high charge-discharge efficiency. This work demonstrates that constructing crosslinked nanocomposites may be a viable way to fabricate high temperature dielectrics.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Ziyue Zhao, Jindong Zhang, Ran Bi, Chunhai Chen, Jianan Yao, Gang Liu
Summary: This study used PAEK resin with a low melting temperature to prepare laminate for CCF-PAEK composites, followed by injection of high melting temperature PEEK or SCF-PEEK for overmolding. The interface properties of the composites were affected by the interface temperature, which was adjusted by mold temperature. Higher interface temperatures resulted in better interfacial bonding between PAEK and PEEK. The melting temperature did not significantly affect the shear strength of SCF-PEEK/CCF-PAEK short beams.
Article
Polymer Science
Longwei Shi, Zheng Zhao, Lishuai Zong, Jinyan Wang, Xigao Jian
Summary: Limiting molecules' polarized motion effectively reduces the dielectric loss of materials. This article synthesized side chains with different lengths to fill up the free volume of polymers through a two-step process. The introduction of side chains reduced the dielectric loss of polymers under hot-pressing conditions. Polymer with the shortest and least side chains showed the most significant reduction in dielectric loss tangent.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Article
Polymer Science
Yang Yang, Bo Jiang, Yingshuang Shang, Qinfei Xu, Junjie He, Xuefeng Li, Haibo Zhang
Summary: This study synthesized fluorene-based poly(aryl ether ketone) (aPAEK) to improve the interlayer adhesion of poly (ether ether ketone) (PEEK) parts, with the tensile strength of 30 mol% fluorene-based aPAEK increased to 75 MPa and the interlayer strength of 20 wt% blends increased by 315% compared to PEEK. The selection of an appropriate molecular weight for aPAEK is crucial in maintaining the elevated tensile strength while promoting interlayer diffusion during the printing process.
Article
Polymer Science
Zhen Wang, Shu Feng Zhou, Yi Zhi Zhuo, Ao Nan Lai, You Zhong Lu, Xiao Bin Wu
Summary: In this study, adamantane groups were introduced into the anion exchange membranes for fuel cells, resulting in a comb-shaped structure. By adjusting the ratio of hydrophobic to hydrophilic segments, the membranes exhibited improved mechanical properties and ionic conductivity. The resulting membranes showed well-defined microphase separation between the hydrophilic and hydrophobic segments, leading to high ionic conductivity and excellent mechanical properties. Therefore, these membranes have great potential for application in fuel cells.
Article
Chemistry, Physical
Ce Song, Hongjian Gu, Linyan Zhu, Wanyuan Jiang, Zhihuan Weng, Lishuai Zong, Cheng Liu, Fangyuan Hu, Yuxi Pan, Xigao Jian
Summary: A polymer genome approach was proposed for rational design of PAEs with high T-g by utilizing machine learning models with high predictive accuracies and generalization abilities. The approach identified favourable and unfavourable genes of PAEs for high T-g and proposed molecular design strategies and mechanistic insights. Experimental synthesis work verified the effectiveness of the approach in achieving PAEs with T-g of 328°C, ranking in the top 1% of the current database.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Materials Science, Characterization & Testing
Sen Niu, Xiaoxue Bai, Yimu Cheng, Hao Qin, Yunhe Zhang, Zhenhua Jiang
Summary: A series of PEEK-based blends with self-crosslinkable c-PEI were prepared by melt blending as high temperature dielectrics. The obtained polymer blends exhibited stable dielectric properties over a wide frequency and temperature range. The crosslinked networks in the blends efficiently restricted the movement of polymer segments, leading to suppressed dielectric loss and enhanced high temperature performance.
Article
Engineering, Chemical
Sandra L. Aristizabal, Lakshmeesha Upadhyaya, Maik Tepper, Hannah Roth, Malinalli Ramirez-Martinez, Matthias Wessling, Suzana P. Nunes
Summary: In this study, an acid-resistant spinneret was fabricated using 3D printing technology, which was then used to produce high-performing hollow fibers. The hollow fiber modules showed stable filtration performance at high temperature.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Polymer Science
Zhaoyang Wang, Bo Jiang, Yunhe Zhang, Xuefeng Li, Yongpeng Wang, Yingshuang Shang, Haibo Zhang
Summary: In this study, a series of cross-linked fluorinated poly(aryl ether)s films were prepared and their thermal, mechanical, and dielectric properties were compared. The polymeric films showed remarkable dielectric properties with a low dielectric constant and dissipation factor. These films also demonstrated excellent mechanical properties and performed well at high frequencies. The results suggest that these polymeric films have great potential for applications in high-speed communication.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Polymer Science
Pengfei Huo, Jinyu Ba, Shuling Zhang, Xingrui Zhang, Zhi Geng, Yang Liu, Guibin Wang
HIGH PERFORMANCE POLYMERS
(2016)
Article
Engineering, Chemical
Pengfei Huo, Yang Liu, Ruiqi Na, Xingrui Zhang, Shuling Zhang, Guibin Wang
JOURNAL OF MEMBRANE SCIENCE
(2016)
Article
Polymer Science
Hongyan Yao, Kaixiang Shi, Ningning Song, Na Zhang, Pengfei Huo, Shiyang Zhu, Yunhe Zhang, Shaowei Guan
Article
Chemistry, Multidisciplinary
Siping Liu, Xiujuan Chen, Xiaoli Li, Pengfei Huo, Yiqun Wang, Long Bai, Wen Zhang, Maocheng Niu, Zhiguo Li
Article
Chemistry, Multidisciplinary
Ruiqi Na, Pengfei Huo, Xingrui Zhang, Shuling Zhang, Yinlong Du, Kai Zhu, Yaning Lu, Menghan Zhang, Jiashuang Luan, Guibin Wang
Article
Polymer Science
Pengfei Huo, Shoupeng Ni, Pu Hou, Zhiyu Xun, Yang Liu, Jiyou Gu
Article
Materials Science, Multidisciplinary
Jiuzhou Zhang, Pu Hou, Boxuan Xi, Wanru Lin, Yang Liu, Guibin Wang, Pengfei Huo
Summary: Introducing polyether side chains into poly(arylene ether sulfone) copolymers for flexible gel polymer electrolytes resulted in higher electrolyte uptake ratio and ionic conductivity. Supercapacitors based on this electrolyte exhibited high capacitance and energy density, along with excellent flexibility and cycle stability.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Agricultural Engineering
Kaixin Zhang, Yue Liu, Zixu Guo, Jian Wang, Yang Liu, Jianing Zhao, Pengfei Huo
Summary: The co-modification of corn straw lignin by demethylation/hydrothermal degradation significantly increased the hydroxyl content by 210.85%. The introduction of co-modified lignin into freezing activated wood fibers resulted in glue-free fiberboard with excellent comprehensive performance, meeting national standards. The interaction mechanism of co-modified lignin on wood fibers was explored through FTIR, DSC, and SEM analysis, showing strong hydrogen bond interactions for the glue-free fiberboard.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Biochemistry & Molecular Biology
Jian Wang, Zhiyu Xun, Chenyang Zhao, Yang Liu, Jiyou Gu, Pengfei Huo
Summary: Researchers successfully prepared a polymer electrolyte based on soy protein isolate (SPI) through grafting modification, which exhibited excellent ionic conductivity. By combining with KI, a redox-active polymer electrolyte was formed, greatly improving the energy density of supercapacitors.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Engineering, Environmental
Pu Hou, Chenxiang Gao, Jian Wang, Jiuzhou Zhang, Yang Liu, Jiyou Gu, Pengfei Huo
Summary: In recent years, the importance of green and sustainable development has been recognized by more and more people. Current research focuses on preparing high strength transparent wood by filling delignified wood with resin. Inspired by this, gel polymer electrolytes with high ionic conductivity were prepared using delignified wood as substrate, polyurethane with different ratios of polyethylene glycol to 2,2-bis(hydroxymethyl)pro-pionic acid as filling polymer matrix, and lithium perchlorate as electrolyte. These electrolytes were applied in solid-state supercapacitors with activated carbon as working electrodes, showcasing excellent performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Chenxiang Gao, Yuting Duan, Yang Liu, Jiyou Gu, Ziyi Guo, Pengfei Huo
Summary: The graft-modification of soybean protein isolate using polyacrylic acid improves its electrochemical performance and enhances the performance of supercapacitors.
JOURNAL OF POWER SOURCES
(2022)
Article
Nanoscience & Nanotechnology
Chenxiang Gao, Zunchang Gao, Yanqing Wei, Na Luo, Yang Liu, Pengfei Huo
Summary: This study developed a novel semi-interpenetrating network by combining quaternized gelatin with cross-linked poly(acrylic acid-co-acrylamide). The resulting composite hydrogel electrolyte showed high ionic conductivity and excellent electrochemical performance, enabling the flexible supercapacitor to operate safely in a wide potential window. The optimized supercapacitor exhibited high specific capacitance, outstanding energy density, and excellent cycling stability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Jian Wang, Chenxiang Gao, Pu Hou, Yang Liu, Jianing Zhao, Pengfei Huo
Summary: A multifunctional hydrogel electrolyte made from covalently cross-linked lignin and interpenetrating gelatin in alkaline solutions has been developed. It possesses high ionic conductivity, strong adhesion, and anti-freezing properties. The optimized flexible supercapacitor with this hydrogel electrolyte exhibits a remarkable specific capacitance of 145.14 F/g and a high energy density of 4.86 Wh kg-1 at room temperature, retaining a comparable specific capacitance of 110.6 F/g even at -40 degrees Celsius.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Yanqing Wei, Yize Zhao, Yue Liu, Na Luo, Zunchang Gao, Pu Hou, Yang Liu, Yanhua Zhang, Pengfei Huo
Summary: In this study, the rectification ratio of ionic diodes was successfully increased by adding an appropriate amount of TAPP to the chitosan and sodium polyacrylate hydrogels. Moreover, the heterojunction hydrogel with TAPP doping exhibited a high open-circuit voltage, making it suitable for self-powered power supply devices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Electrochemistry
Zhiyu Xun, Yang Liu, Jiyou Gu, Lingxiao Liu, Pengfei Huo
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2019)
