Article
Polymer Science
Gyu-Hyun Hwang, Young Seung Kwon, Ji-Su Lee, Young Gyu Jeong
Summary: The study fabricated polyimide nanocomposite films with 1-30 wt% functionalized hexagonal boron nitride nanosheets, which showed significantly enhanced mechanical strength, thermal degradation temperatures, and thermal conductivity with increasing BNNS loadings. The in-plane thermal conductivity of the nanocomposite films was much higher than the out-of-plane values due to the synergistic anisotropic orientation effects of both BNNS and PI matrix, and the values were 1.82-2.38 W/mK and 0.35-1.14 W/mK, respectively.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Wu Bai, Yunhua Lu, Zhizhi Hu, Guoyong Xiao, Hongbin Zhao, Jianmin Zhu, Zhaobin Liu
Summary: In this study, transparent polyimide nanocomposite films were successfully prepared by introducing inorganic nanoparticles. The fluorescence intensity of the films increased with the content of inorganic nanoparticles, with the most significant improvement effect observed with nano-SiO2. The functional films exhibited high glass transition temperatures and excellent thermal stabilities, showing potential for optical applications.
Article
Engineering, Electrical & Electronic
Yongqiang Guo, Shuangshuang Wang, Kunpeng Ruan, Haitian Zhang, Junwei Gu
Summary: In this study, carbon nanotubes pillared on exfoliated graphite by the microwave-assisted method are used as thermally conductive fillers in polyimide to fabricate composites with significantly improved thermal conductivity. The composites show high stability even after repeated heating and cooling cycles, and finite element analysis reveals the internal mechanism of the enhanced thermal conductivity. Actual application tests demonstrate the composite's capability to reduce the operating temperature of mobile phone CPUs.
NPJ FLEXIBLE ELECTRONICS
(2021)
Article
Nanoscience & Nanotechnology
Baode Zhang, Marialaura Clausi, Barbara Heck, Susanna Laurenzi, M. Gabriella Santonicola, Janis Kleperis, Andris Antuzevics, Guenter Reiter, Andrey N. Aleshin, Anatoly S. Lobach
Summary: The study investigates the interplay between CNTs and PIs under UV exposure, showing how covalent interactions between the two components tailor surface energy and conductivity. Addition of CNTs to UV-exposed PI films leads to antagonistic contributions of dispersion and polar components to surface energy.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Polymer Science
Alexandra L. Nikolaeva, Alexander N. Bugrov, Maria P. Sokolova, Elena M. Ivan'kova, Ivan Abalov, Elena N. Vlasova, Iosif Gofman
Summary: By studying the fabrication and characterization of polyimide/metal oxide nanocomposite films, we have identified trends in the functional properties of these materials based on factors such as the type, size, concentration of the nanofiller, and the chemical structure of the matrix polyimide.
Article
Materials Science, Multidisciplinary
Yongan Niu, Zenghui Shi, Yingjin Pei, Zihang Shi, Xianqi Cao, Jianming Feng, Xin Zhang
Summary: In this study, WO3 nanorods were directly blended with polyamic acid (PAA) solutions to enhance the electrochromic capacity of WO3/PAA composite films, resulting in composite films with excellent mechanical and thermal properties.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2022)
Article
Polymer Science
Alexandra L. L. Nikolaeva, Alexander N. N. Bugrov, Maria P. P. Sokolova, Igor V. V. Kuntsman, Elena N. N. Vlasova, Elena M. M. Ivan'kova, Ivan V. V. Abalov, Iosif V. V. Gofman
Summary: This paper reports on novel polyimide (PI) nanocomposites filled with binary mixtures of metal oxide nanoparticles and nanocarbon materials. The structure, morphology, thermal, and mechanical properties of the materials were comprehensively studied. The synergistic effect of the nanoconstituents on various functional characteristics of the PIs was revealed, and the possibility of manipulating the material properties by choosing the proper combination of nanofillers was demonstrated. This research provides a platform for the design of PI-based engineering materials with tailored characteristics for extreme conditions.
Article
Polymer Science
Ting-Ting Li, Xiaoyang Zhang, Yanting Wang, Fei Sun, Jiawen Xu, Ching-Wen Lou, Jia-Horng Lin
Summary: In this study, CNT/PP/PC conductive composite films were prepared and characterized using various analysis methods. The optimal conductivity, thermal stability, and tensile strength conditions were identified, providing a strategy for practical applications of flexible electronic devices.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
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, Manufacturing
Seung-Won Jin, Yu-Ji Jin, Yun-Je Choi, Dam-Bi Kim, Kang-Hoon Yoon, Hyun-Woo Kim, Chan -Moon Chung
Summary: In this paper, the eco-friendly production of thermally conductive polyimide/boron nitride (PI/BN) composite sintered materials was reported. The synthesis of monomer salt (MS)/BN composite powders and PI/BN composite powders was achieved using a green solvent and solvent-free solid-state polymerization (SSP), respectively. The resulting PI/BN composite specimens showed significantly improved thermal conductivities compared to pure-PI specimens, with effective connections between BN nanosheets being attributed to the increased thermal conductivities. This study presents a novel and economical method for the preparation of highly thermally conductive PI composites.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Materials Science, Composites
Hua Xiao, Zi Xin Huang, Ze Ping Zhang, Min Zhi Rong, Ming Qiu Zhang
Summary: A facile strategy for effectively constructing in-plane and through-plane thermal conduction paths in polyimide (PI) and its flexible copper clad laminates (FCCLs) was reported by incorporation of hexagonal boron nitride (h-BN) in a controlled manner. The specific sea-island architecture allowed the preparation of highly thermally conductive flexible PI film and its FCCLs at relatively lower total boron nitride loading. The results of the current work may open a new avenue for promoting the practical application of thermally conductive PI based FCCLs.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Manufacturing
Guirong Hu, Fuping Dong, Jing Xu, Yuzhu Xiong
Summary: The development of 5G technology and intelligent electronic products has posed a significant challenge in creating hydrophobic, high thermal conductivity, and small-thickness EMI shielding materials. This study introduces a method for producing hydrophobic and small-thickness nanocomposite films with symmetric double-conducting networks using vacuum-assisted filtration and encapsulating polydimethylsiloxane (PDMS). The resulting film exhibits excellent electromagnetic interference shielding effectiveness, mechanical properties, and thermal conductivity. It provides a solution for the production of MXene/polymer composites with outstanding characteristics.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Materials Science, Composites
Valeri Ivanov Petkov, Roberts Joffe, Patrik Fernberg
Summary: The weight loss and damage development of satin weave and thin-ply carbon fiber-reinforced polyimide composites are studied during high temperature aging. Two distinct regions are identified in the weight loss measurements, and two different damage patterns are observed through microscopy. A mathematical model is proposed to explain the initial desorption stage.
POLYMER COMPOSITES
(2022)
Article
Engineering, Manufacturing
Yaqi Geng, Ran Cao, Mugaanire Tendo Innocent, Zexu Hu, Liping Zhu, Le Wang, Hengxue Xiang, Meifang Zhu
Summary: Temperature sensors are important for personal health management, but it is a challenge to create high-sensitivity sensors that can adapt to different temperature ranges. This study successfully synthesized an acrylate copolymer with adjustable temperature response and used it to construct a highly sensitive wearable body temperature sensor. The sensor showed a sensitivity of 12.5% within a 0.5 degree Celsius range around body temperature and remained stable after 200 heating cycles. It can be connected to LEDs for visualization, making it promising for smart wearable electronics.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Materials Science, Composites
Shuyi Deng, Qing Zhang, Qihua Huang, Dingguo Tang, Peng Mei, Yingkui Yang
Summary: This study successfully designed a high-performance sulfur cathode by integrating polyimide nanoarrays and conductive networks formed by carbon nanotubes, which can efficiently trap LiPS and enable fast conversion. The PI@CNT/CNT/S cathode has a sulfur loading as high as 70% and maintains a capacity retention of 67% after 300 cycles.
COMPOSITES COMMUNICATIONS
(2022)
Article
Chemistry, Organic
Zhen Yu, Li Wang, Li Liu, Meng Wang, Hong Yang
Summary: This Account summarizes our research efforts and achievements in the field of olefin metathesis polymerization over the past decade, with a particular focus on acyclic diene metathesis (ADMET) polymerization and ring-opening metathesis polymerization (ROMP) strategies. The merits and limitations of these methods are also demonstrated, and our recently developed sequence-controlled ROMP strategy is highlighted.
Article
Multidisciplinary Sciences
Xu-Man Chen, Wei-Jie Feng, Hari Krishna Bisoyi, Shu Zhang, Xiao Chen, Hong Yang, Quan Li
Summary: In this study, a light-activated photodeformable dissipative self-assembly system was reported. This system can change its morphology and fluorescence color based on the duration of light irradiation, and it can also disappear after a certain period of time.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Pengna Wang, Ying Sun, Jie Li, Guanqun Zhu, Xueqin Zhang, Hong Yang, Baoping Lin
Summary: Novel monomer TPACz containing carbazole and triphenylamine active groups was synthesized, and P(TPACz)/WO3 coralloid porous electrochromic electrode material was prepared. The material exhibited independent electrochromic properties in different potential ranges and showed both n-type and p-type doped electrochemical properties. Additionally, it demonstrated excellent capacitive properties in specific potential windows.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Guanqun Zhu, Ying Sun, Huijun Zhang, Ying-Shi Guan, Jie Li, Pengna Wang, Hong Yang, Baoping Lin, Quan Li
Summary: In this study, a polymer layer protected electrode material was designed, inspired by the functions of bryophytes in ecological protection. The electrode demonstrated high cycling stability and improved electrochemical performance.
Article
Chemistry, Multidisciplinary
Xu-Man Chen, Ke-Wei Cao, Hari Krishna Bisoyi, Shu Zhang, Nina Qian, Lingxiang Guo, Dong-Sheng Guo, Hong Yang, Quan Li
Summary: This study reports a supramolecular self-assembly strategy for controlling polychromatic fluorescence, where the emission trends can be modulated by the modified alkyl-chains of the light-harvesting platforms. Optimized light-harvesting systems show high sensitivity and antenna effect, and exhibit good performance in cell imaging.
Article
Chemistry, Multidisciplinary
Nina Qian, Hari Krishna Bisoyi, Meng Wang, Shuai Huang, Zhongcheng Liu, Xu-Man Chen, Jun Hu, Hong Yang, Quan Li
Summary: In recent years, the design and construction of intelligent robotic systems with omnidirectional motion capability on a plane have remained challenging. This study introduces photo-thermal fillers and a twist-bend actuation mode into a liquid crystal elastomer-based soft robot, resulting in a crawling robot that can rotate, turn, and move linearly under light irradiation with four wavelength bands. It also demonstrates the ability to avoid obstacles in complex geographical environments. This work provides a new perspective for the fabrication and development of soft robots that can adapt to dynamic and complex environmental conditions.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jun Hu, Zhenzhou Nie, Meng Wang, Zhiyang Liu, Shuai Huang, Hong Yang
Summary: Jumping is an important motion for animals to escape predators and adapt to the environment. Inspired by springtails, researchers have developed a light-driven soft jumping robot with impressive jumping capabilities. By changing the size and crease angle of the ribbon actuators, the robot can control its jump height, distance, and direction. These robots can efficiently jump over obstacles and continue jumping in complex environments, showing promising potential for future soft robots.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Meng Wang, Tao Hu, Hari Krishna Bisoyi, Zhen Yu, Li Liu, Ying Song, Jianfeng Yang, Hong Yang, Quan Li
Summary: This study presents a novel thermal/photo/magnetorheological water-based magnetic fluid with excellent suspension stability and controllable rheological properties. The fluid is composed of magnetic nanoparticles and a water-based carrier, and it exhibits reversible changes between low-viscosity flow state and 3D gel structure. Additionally, the rheological changes can be controlled using near infrared light and alternating magnetic field, making the fluid applicable in various fields.
Article
Chemistry, Multidisciplinary
Zhen-Zhou Nie, Meng Wang, Shuai Huang, Zhi-Yang Liu, Hong Yang
Summary: This paper reports a light-fueled soft actuator based on a Seifert ribbon, capable of multimodal self-sustainable movements. The Seifert ribbon actuator can self-sense the adjustment of illumination area, enabling adaptive switches between self-sustained oscillatory and rotary motions. These two motion modes are applied to piezoelectric generation and cargo transport. The smartness of Seifert surface topology advances actuation intelligence with broad implications for adaptability, multifunctionality, and autonomy of soft robots.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Shuai Huang, Junjie Sun, Hari Krishna Bisoyi, Yu Tao, Jinyu Wang, Yiyi Xu, Yinliang Huang, Meng Wang, Hong Yang, Quan Li
Summary: Soft actuators in soft robotic technologies have the potential to achieve complex functions through simple motion modes. However, converting simple motion modes to complex ones remains a major challenge. Traditional assembly methods for soft actuators are limited in terms of reconstruction and modification, making them disposable. Therefore, a feasible approach is to develop assembled actuators using functional adhesive tape that offers on-site and repeatable installation. We have developed a free-standing functional adhesive tape based on polydisulfides containing photoresponsive azobenzene moieties, which can be used to fabricate reconfigurable and spliceable soft actuators with optimized adhesion performance and photothermal functions.
CHEMISTRY OF MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Zhen-Zhou Nie, Meng Wang, Hong Yang
Summary: Liquid crystal elastomers (LCEs) are active soft matter-based materials with strong stimulus responsiveness and reversible, large-shape morphing capabilities. They have demonstrated broad and growing applications in various fields. The actuation intelligence and advanced functionality of LCEs depend on the smartness and properties of structures.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Review
Materials Science, Multidisciplinary
Meng Wang, Xiang Huang, Hong Yang
Summary: Crosslinked liquid crystal polymers (CLCPs) are smart polymer materials with excellent two-way shape memory behavior under external stimuli. Light, with its advantages of instantaneity, high accuracy, remote controllability, and pollution-free nature, has been widely used to control CLCPs. Recently, there has been scientific attention towards designing photoresponsive CLCPs based on the photothermal effect. Photothermal-responsive CLCPs can achieve reversible macroscopic deformation using photothermal materials to locally heat the CLCP matrix. This review discusses photothermal-responsive CLCPs under different light wavelengths and their application fields, as well as the current challenges and future development.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Xiaoxiao Peng, Jin Ma, Zhixin Zhou, Hong Yang, Jingjing Chen, Ran Chen, Kaiqing Wu, Guangcheng Xi, Songqin Liu, Yanfei Shen, Yuanjian Zhang
Summary: In this study, the dissolution of polymeric carbon nitride (pCN) in polyphosphoric acid (PPA) and its fluid-phase assembly with carbon nanotubes (CNTs) into a flexible free-standing membrane were reported for the first time. The pCN/CNTs molecular composite membrane exhibited superior mechanical properties, cycling performance, and outstanding bactericidal and wound healing effects through photogenerated oxygen radicals. This opens up new possibilities for biomedical applications of pCN in molecular composite membranes beyond traditional solar fuel applications in powders.
Article
Polymer Science
Meng Wang, Hui-hui Wu, Hong Yang
Summary: A new transparent polyimide composite film, SiO2/MgF2/CPI, was developed for solar cell cover sheets. The film exhibited excellent thermal stability, high light transmittance, and good mechanical properties. It also showed outstanding irradiation-resistant property after electron irradiation.
ACTA POLYMERICA SINICA
(2023)
Article
Polymer Science
Zhi-yang Liu, Kun Jiang, Zhen-zhou Nie, Guan-qun Zhu, Qi Jiang, Xin-ying Hu, Hong Yang, Quan Li
Summary: In this study, a soft-hard segment crosslinked copolymer-based lithium ionic conductive elastomer was prepared via a one-step click polymerization reaction and used as a flexible strain sensor for monitoring finger bending and Morse Code transmission information. The elastomer exhibits high elongation, transparency, conductivity, and strain sensitivity.
ACTA POLYMERICA SINICA
(2023)
