Article
Materials Science, Multidisciplinary
Seok-Hwan Chung, Jong Tae Kim, Hoyoung Kim, Dong Hwan Kim, Sang Won Jeong
Summary: The study demonstrated a method to enhance the thermal conductivity of flexible substrate films by magnetic alignment of mGPs, providing new possibilities for flexible electronics applications. Additionally, the thermal conductivity and coefficient of thermal expansion of the composite film increased and decreased, respectively, with the filler content, laying a foundation for the preparation of flexible electronics substrates with high thermal conductivity and stability.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Polymer Science
Zhibin He, Xi Ren, Zhenzhong Wang, Zhen Pan, Yuexin Qi, Shujun Han, Haifeng Yu, Jingang Liu
Summary: A polyimide-silica nanocomposite film with good optical transparency, thermal stability, and high-temperature dimensional stability was developed in this study.
Article
Materials Science, Multidisciplinary
Tao Chen, Xiaojie He, Qinghua Lu
Summary: In this study, a diamine monomer DAPyBA capable of forming multiple hydrogen bonds was successfully designed and synthesized, and corresponding PI films were prepared. The PI films exhibited excellent heat resistance and mechanical properties, which improved with increasing DAPyBA content due to the formation of multiple hydrogen bonds. Additionally, the introduction of DAPyBA effectively increased the adhesion of PI films on substrates.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Polymer Science
Jieun Jeong, Soochan Kim, Sangsoo Yun, Xin Yang, Young Jun Kim
Summary: Polyethersulfone (PES) is an engineering thermoplastic with outstanding thermal and dimensional stability, but its high coefficient of thermal expansion (CTE) limits its applications in automobiles, microelectronics, and flexible displays. Recent studies have focused on reducing its CTE and improving its mechanical properties by adding nano-sized fillers or materials. In this study, PES/lignin nanocomposite films were prepared by varying the relative ratio of PES and lignin, resulting in improved thermomechanical and optical properties of PES.
Article
Polymer Science
Zheng-hui Yang, Chuan-qing Kang, Hai-quan Guo, Lian-xun Gao
Summary: The introduction of rigid diamine (PD) in polyimide chains can systematically tailor the performance of polyimide films, increasing their glass transition temperature and decreasing thermal expansion coefficient, while also improving tensile strength and modulus, with a high elongation at break maintained.
ACTA POLYMERICA SINICA
(2021)
Article
Acoustics
Shitian Huang, Wenbo Luo, Xiaoyuan Bai, Lu Lv, Xinqiang Pan, Yao Shuai, Chuangui Wu, Wanli Zhang
Summary: This article presents a study on the preparation of highly efficient resonators on flexible PI substrates. By utilizing LN single-crystalline film and Bragg reflector technology, a high K-t(2) effect was achieved. The results demonstrate that the resonant frequency and K-t(2) remain stable when bent at different radii.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2021)
Article
Materials Science, Ceramics
Francieli Goncalves Franceschini, Oscar Rubem Klegues Montedo, Sabrina Arcaro, Carlos Perez Bergmann
Summary: Thermal fatigue causes irreversible damage in aluminum alloys, limiting their use in the automotive industry. Applying a glazed coating based on the aluminum borophosphate system can effectively improve wear resistance at high temperatures. The development of a crack-free material with good compatibility between the layers enhances the performance and thermal efficiency of the alloy, showing enormous potential applications in the automotive industry.
CERAMICS INTERNATIONAL
(2021)
Article
Polymer Science
Chang-Ou Wang, Lei Zhai, Song Mo, Yi Liu, Meng-Yan Gao, Yan Jia, Min-Hui He, Lin Fan
Summary: The study investigates the thermal expansion behavior of polyimide films derived from PMDA/ODA, concluding that the film thickness affects the thermal expansion properties. Thinner films exhibit denser molecular chain packing along the in-plane direction, while thicker films have higher vertical chain packing order.
CHINESE JOURNAL OF POLYMER SCIENCE
(2022)
Article
Engineering, Electrical & Electronic
Md Hanif Ali, Adityanarayan Pandey, Rowtu Srinu, Paritosh Meihar, Shubham Patil, Sandip Lashkare, Veeresh Deshpande, Udayan Ganguly
Summary: This study investigates the impact of postmetallization annealing temperature and film thickness on the ferroelectric properties of undoped HfO2 on Si substrate. The findings reveal an optimal temperature window and a critical thickness range for achieving the best ferroelectric performance. The films also demonstrate robust endurance and potential for nonvolatile memory applications.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Engineering, Environmental
Xianbo Hou, Yiqi Mao, Rubing Zhang, Daining Fang
Summary: The study developed a polyimide (PI) nanofiber cross-linked polyimide aerogel membrane with high flexibility, strong mechanical properties, and efficient heat insulation. Addition of nanofibers significantly enhanced the performance of aerogel, making it a potential material for applications in modern technology, military, and aerospace.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Jun-Shuai Gong, Zhi-Liang Wang, Hui-Wen Qu, Ding-Yong Cang
Summary: This paragraph discusses the fabrication of a flexible bandpass filter based on polyimide using self-metallization technology, covering a specific frequency range of WLAN. The filter demonstrates stable performance and capability to adapt to different states.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Chang Gao, Weili Li, Lu Jing, Zhao Wang, Lei Shi, Jie Sheng, Lidong Wang, Yu Zhao, Weidong Fei
Summary: In this study, high-performance FePV devices were obtained by directly coating partially crystallized Zn0.92-xCux(Fe0.04Li0.04)O (ZCFLO) film on a polyimide substrate using a cheap and simple dip-coating method. Enhanced carrier transportation and photovoltaic performance were achieved by introducing local ferroelectricity and the piezo-photovoltaic effect in designed ferroelectric/amorphous nanostructures, further expanding the research scope of piezo-phototronics.
Review
Polymer Science
Yuan-Yuan Liu, Ya-Kun Wang, Da-Yong Wu
Summary: This review provides an overview of recent advances in the field of transparent PI films, with a focus on balancing optical and thermal performance to achieve high transparency.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Multidisciplinary Sciences
Yuichiro Kurokawa, Yusuke Tahara, Yuki Hamada, Masahiro Fujimoto, Hiromi Yuasa
Summary: In this study, Fe3O4 nanoparticle-assembled films were prepared for spin Seebeck thermoelectric generator applications. It was observed that the thermoelectric power of multilayered films increases with the number of stacking, and the thermopile devices show higher voltages.
SCIENTIFIC REPORTS
(2022)
Article
Materials Science, Characterization & Testing
Jinghua Tan, Fengyun Xie, Jie Huang, Xueyuan Liu, Huipeng Li, Jiazhen Yuan, Pan He, Yiwu Liu
Summary: With the rapid growth of microelectronics and optoelectronics, the demand for black polyimides (BPIs) with exceptional comprehensive performance has increased dramatically. In this study, a novel diamine containing a special chromophore was successfully synthesized, and a high-performance black polyimide material was obtained through polymerization. The material exhibits significant light absorption, low coefficient of thermal expansion, and excellent electrical performances. This study provides theoretical guidance for practical microelectronic applications.
Article
Polymer Science
Mustafa Kalay, Abidin Esidir, Mahmut Ruzi, N. Burak Kiremitler, Mustafa Serdar Onses
Summary: This study proposes stable and addressable polymer PUFs, utilizing a cross-linkable polymer system, which demonstrates high stochastic characteristics and low-cost production. The performance of the polymer features is evaluated through various analyses, and direct image authentication is achieved using feature matching algorithms.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Jingyu Jin, Guoqiang Lu, Jun Nie, Xiaoqun Zhu
Summary: Photopolymerization technology is limited in the fields of food packaging and biomedicine due to the high migration of small molecules from photoinitiators. In this study, a polymerizable 2-vinyl thioxanthone (ETX) was synthesized to improve the migration stability of photoinitiators. Macromolecular photoinitiators (PPI1, PPI2) were also prepared to further reduce migration. The results showed that the ETX/TEOA system had higher initiation performance and PPI2 displayed favorable initiation ability. Additionally, the migration of ETX, PPI1, and PPI2 in photocured film was significantly reduced. These low-migration photoinitiators have potential applications in the fields of food packaging and biological materials.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Weijie Li, Jun Nie, Yingying Zhao, Xiaoqun Zhu
Summary: This study focuses on the development of high-performance, low-migration photoinitiators. A polymerizable photoinitiator (VBP) was synthesized by introducing an ethylene group into benzophenone, and three different molecular weight single-component photoinitiators (PVBN1-3) were synthesized based on VBP. The results show that these new photoinitiators have stronger absorption ability compared to benzophenone and significantly reduce the migration of initiators and co-initiators, addressing the safety concerns caused by migration.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Seira Morimune-Moriya, Yuki Iwahashi, Mitsuru Nakamura, Daisuke Ogawa, Keiji Nakamura
Summary: This study investigates the effect of plasma treatment on carbon nanotubes (CNTs) and the structure/properties of polyimide (PI) nanocomposites with ultra-low content of CNTs. The results show that plasma treatment introduces isocyanate groups on the surface of CNTs and enhances the interfacial interaction between PI and treated CNTs. This leads to a significant improvement in the mechanical properties of the nanocomposites, with even a small addition of treated CNTs showing a substantial increase in Young's modulus, tensile strength and toughness.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Yuanlong Li, Chaojie Chen, Guoqing Cui, Li Liu, Chao Zhou, Guangfeng Wu
Summary: In this study, a novel ion-conducting hydrogel was fabricated using a straightforward approach. The hydrogel showed excellent tensile properties and high toughness due to physical interactions and covalent binding. Additionally, the introduction of hydroxyethyl cellulose and lithium chloride improved the biocompatibility, mechanical properties, electrical conductivity, and frost resistance of the hydrogel, demonstrating its potential for cold climate applications.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Dengwei Yan, Jinxian Yang, Xuejun Pan, Xiaozheng Duan, Lianwei Li, Mo Zhu
Summary: The influence of backbone length on grafting efficiency during the graft-onto reaction process was investigated. It was found that the polydispersity effect of backbone length does not affect the final grafting efficiency, indicating that the local dynamics of chain segments dominate the graft-onto process.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Zhaoyi Luo, Xianjie Pan, Fanqi Liu, Quanxi Yi, Yanning Zeng, Yunhua Chen, Chaoyang Wang
Summary: This study provides a method to prepare high-performance epoxy materials with good malleability and thermal stability. The materials have self-healing and welding capabilities, thanks to the addition of specific chemical bonds and network structures. They exhibit mechanical properties comparable to commercial epoxy resins and show great potential for sustainable industrial development.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Chaoji Xiong, Hao Wang, Lihua Deng, Kun Liang, Chunhua Wu, Wei Wu, Qian Chen
Summary: In this study, four polyamides were synthesized and their adsorption performances for Hg2+ in aqueous systems were investigated. The polyamides exhibited high adsorption capacities and excellent reusability, with the involvement of sulfur, nitrogen, and oxygen in the chemical adsorption process of Hg2+.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Siim Laanesoo, Olivier Bonjour, Rauno Sedrik, Iris Tamsalu, Patric Jannasch, Lauri Vares
Summary: The insertion of rigid aliphatic or aromatic building blocks in polymer structures is an effective way to synthesize high -Tg polymer materials. In this study, a series of isosorbide-2-aryl carboxylate-5-methacrylate monomers (ArIMAs) were synthesized by functionalizing isosorbide 5-methacrylate with various aromatic lignin-inspired esters. These monomers were polymerized to obtain high molecular-weight poly(aryl carboxylate isosorbide methacrylates) (PArIMAs). The resulting polymers showed high glass transition temperatures and thermal stability, making them suitable for use as high-performance plastics and coatings.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Yuqian Wu, Weijie Xu, Jianliang Li, Zhangfeng Zhong, Liqing Huang, Shengke Li, Huaping Tan
Summary: This study investigates the improvement of degradation and drug release characteristics of dynamic Schiff base-mediated natural polysaccharide hydrogels using tannic acid (TA), leading to enhanced stability and functionality.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Xi Zhang, Xiangli Kong, Xin Zhou, Yiyan Gao, Yibo Sun, Guanghui Gao, Wei Liu, Kai Shi
Summary: Conductive hydrogels have great development prospects in flexible strain sensors, but long-term direct contact with human skin can cause bacterial infection. A hydrogel with antibacterial, biocompatibility, and toughness was designed and manufactured using a freeze-thaw method. The hydrogel maintains tensile properties and fatigue resistance at low temperatures and is resistant to bacteria. Therefore, hydrogel sensors can be used to monitor human movements.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Wei Zhang, Jiangang Yu, Mingyang Wu, Rui Li, Anqiang Zhang, Yaling Lin
Summary: In this study, polyacrylamide containing quaternary ammonium salts (PAM-X) were synthesized and found to effectively inhibit soil-borne pathogenic fungi while maintaining the balance of microbial population in soil. PAM-X also showed low toxicity to earthworms and fish, providing a new method for the prevention and control of soil-borne fungal diseases.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Jiawen He, Haojie Yu, Li Wang, Jian Yang, Yanhui Zhang, Wenbing Huang, Chenguang Ouyang
Summary: This review discusses the use of polymeric hydrogels for atmospheric water harvesting (AWH), including the mechanism of water sorption, fabrication methods, and strategies for optimizing the structure of hydrogels. The extended applications of hygroscopic photothermal hydrogels, such as agricultural irrigation and dehumidification, are also explored. The challenges and prospects of using polymeric hydrogels for AWH are summarized.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Ying Du, Shuaishuai Lu, Yuanna Sun, Qingshan Li, Xinhai He
Summary: This study introduces a method to improve the performance of hydrogels by incorporating proline, resulting in hydrogels with excellent stretchability, high conductivity, and long-term stability. The hydrogel remains flexible and conductive even at ultra-low temperatures.
EUROPEAN POLYMER JOURNAL
(2024)