Article
Materials Science, Composites
Zhenyu Ma, Yinchuan Pu, Yudong Huang, Li Liu, Yuan Yao
Summary: The study synthesized poly(amide-imide) (PAI) with reactive catechol pendant groups as the sizing for carbon fiber, improving the mechanical properties of CF/PEI and CF/PEEK composites. The improved interface in composites contributed to the increased performance by bridging PAI between CF surface and PEI, PEEK matrices.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Yuanhao Zhang, Yubo Zhou, Zhen Wang, Jingling Yan
Summary: Colorless polyimide films have great potential for flexible display applications due to their excellent optical transparency and thermal and mechanical properties. By adjusting the molar ratios of monomers, the thermal, mechanical, and optical properties of the copolymers were optimized. The incorporation of amide linkages significantly improved the mechanical properties and dimensional stability of the films. The adoption of CBDA suppressed the formation of charge transfer complexes, resulting in well-balanced optical properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Luis Felipe de Paula Santos, Rene Alderliesten, Winand Kok, Bruno Ribeiro, Juliana Bovi de Oliveira, Michelle Leali Costa, Edson Cocchieri Botelho
Summary: The research identified the best parameters for processing carbon nanotube buckypapers (BP) through vacuum filtration technique and the use of electrospun poly (ether imide) (PEI) mats as a substrate, which optimized matrix/nanoparticle adhesion and improved handling. The addition of BP/PEI mats enhanced the thermal stability of PEI laminates and promoted interaction between constituents in both PEI and poly (aryl ether ketone) (PAEK) laminates.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Polymer Science
Xingfeng Lei, Guo Xiong, Yuyang Xiao, Tianhao Huang, Xiangze Xin, Shuyu Xue, Qiuyu Zhang
Summary: By incorporating amide hydrogen bonding interactions, researchers have developed a new material called poly(amide-imide) hybridization networks, which exhibit superior shape memory behavior, thermal stability, and mechanical strength, making them promising candidates for aerospace applications.
Article
Polymer Science
Taejoon Byun, Seong Jong Kim, Sang Youl Kim
Summary: Soluble aromatic poly(amide-imide)s with controlled imide/amide bond ratio were synthesized from a new diamide-diamine monomer. These materials exhibited high thermal stability and solubility, and could be used to fabricate flexible films.
Article
Polymer Science
Amjad Albiladi, Lassaad Gzara, Hussam Organji, Nazeeha S. Alkayal, Alberto Figoli
Summary: The major challenge in membrane distillation (MD) is membrane wetting caused by pollutants. This study focused on fabricating hydrophobic membranes for brine treatment using electrospun PVDF-HFP nanofiber membranes. The effects of solvent composition and polymer concentration on the electrospinning process were investigated, and post-treatment was carried out to optimize membrane performance.
Article
Chemistry, Multidisciplinary
W. Xia, Y. -H. Feng, J. Zou, J. Huang, M. -M. Guo, P. Zhang
Summary: The study constructed high-performance PUI/GFs composites through thermal imidization self-foaming reaction, showing low percolation thresholds and excellent thermal stability and mechanical properties. The composites also exhibited a zero temperature coefficient of resistivity in a wide temperature range, providing a novel strategy for high thermally stable conductive materials.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
A. Young Kim, Seon Ju Lee, Moon Young Choi, Changyub Na, Lee Ku Kwac, Hong Gun Kim, Jin-Hae Chang
Summary: Polyamic acid (PAA) was synthesized using specific monomers and transformed into colorless transparent poly(amide imide) (CPAI) hybrid films. The CPAI hybrid films were prepared by dispersing organoclay STN in CPAI, and the properties were studied based on the dispersed STN content. While some clay were agglomerated, most clays were well-dispersed in nano-size. The best thermomechanical properties were achieved with an STN content of 3 wt%.
Article
Materials Science, Textiles
A. Young Kim, Yu Shin Eom, Ji Ho Youk
Summary: This study evaluated the use of nanoparticles to improve the surface hardness of polymer films and found that adding FSNs could increase hardness while maintaining transparency and mechanical properties, while adding MSNs led to a decrease in transmittance.
FIBERS AND POLYMERS
(2022)
Article
Chemistry, Multidisciplinary
Jaegun Lee, Ju-Young Choi, Junhwan Jang, Sechang Park, Gyumin Ji, Seung-Hyun Lee, Dam-Bi Kim, Kang-Hoon Yoon, Chan-Moon Chung, Soohaeng Cho
Summary: This study fabricated multilayer electrodes composed of GCA/AgNW/GCA/cPAI, which exhibited improved mechanical durability and applicability for nonvolatile memory.
Article
Chemistry, Multidisciplinary
Xiaoli He, Lei Wang, Kangning Lv, Wenjun Li, Song Qin, Zhihong Tang
Summary: Fish collagen-PCL nanofiber membranes prepared by electrospinning have good mechanical properties and biocompatibility, and can promote cell adhesion and proliferation.
Article
Engineering, Manufacturing
Chengdong Xiong, Liming Wang, Jinlin Yu, Xiaohong Qin, Rongwu Wang, Jianyong Yu
Summary: A novel continuous self-crimped micro-nanofiber forming method has been developed through one-step electrospinning, showing that the crimp of polystyrene fibers can be triggered by comprehensive differences in diameter size, dielectric constant, electrical conductivity, and gap width between fibers on the substrate. The theoretical model of multiple forces and experimental results validate the forming mechanism of crimp.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Polymer Science
Taejoon Byun, Seong Jong Kim, Sang Youl Kim
Summary: Transparent and soluble poly(amide-imide)s (PAIs) with high dimensional stability were successfully synthesized using specific monomer synthesis method, and the prepared PAIs exhibited excellent properties with simple fabrication process.
Article
Chemistry, Multidisciplinary
Dandan Li, Chengyang Wang, Xiaoying Yan, Shengqi Ma, Ran Lu, Chunhai Chen, Guangtao Qian, Hongwei Zhou
Summary: In this study, the brittleness of poly(benzimidazole imide)s was effectively improved by incorporating N-phenyl groups, resulting in high thermal stability and low coefficient of thermal expansion. The influence of removing intermolecular hydrogen bonds on the properties of these materials was systematically analyzed.
Article
Chemistry, Multidisciplinary
Guangtao Qian, Fengna Dai, Haiquan Chen, Mengxia Wang, Mengjie Hu, Chunhai Chen, Youhai Yu
Summary: A novel N-phenyl-poly(benzimidazole imide) was successfully synthesized, addressing the issues of high water-absorption and retaining superheat resistance. The resulting polymer had a high glass-transition temperature and increased optical transparency due to its loose molecular packing and noncoplanar structures.
Article
Materials Science, Composites
Dong Gi Seong, Shino Kim, Moon Kwang Um, Young Seok Song
JOURNAL OF COMPOSITE MATERIALS
(2018)
Article
Materials Science, Multidisciplinary
Sei Hyun Yang, Jae Ryoun Youn, Young Seok Song
CURRENT APPLIED PHYSICS
(2018)
Article
Chemistry, Physical
Daeryeong Bae, Shino Kim, Wonoh Lee, Jin Woo Yi, Moon Kwang Um, Dong Gi Seong
Article
Biochemical Research Methods
Sei Hyun Yang, Juhyuk Park, Jae Ryoun Youn, Young Seok Song
Article
Chemistry, Physical
Dong Gi Seong, Shino Kim, Doojin Lee, Jin Woo Yi, Sang Woo Kim, Seong Yun Kim
Article
Materials Science, Multidisciplinary
Juhyuk Park, Hyung Min Kim, Jae Ryoun Youn, Young Seok Song
ADVANCED MATERIALS TECHNOLOGIES
(2019)
Article
Chemistry, Physical
Min Jung Kim, Seoung Jai Bai, Jae Ryoun Youn, Young Seok Song
JOURNAL OF POWER SOURCES
(2019)
Article
Materials Science, Characterization & Testing
Zheng Min Huang, So Yun Lee, Hyung Min Kim, Jae Ryoun Youn, Young Seok Song
POLYMERS & POLYMER COMPOSITES
(2019)
Article
Chemistry, Multidisciplinary
Min Jung Kim, Soyun Lee, Chang-Ki Moon, Jang-Joo Kim, Jae Ryoun Youn, Young Seok Song
Article
Nanoscience & Nanotechnology
Moo Yeol Lee, Youngseok Oh, Jayeon Hong, Sang Jin Lee, Dong Gi Seong, Moon-Kwang Um, Joon Hak Oh
Summary: This study presents a method for fabricating wearable electronic devices using stretchable core-shell polymeric nanofibers, demonstrating high stability and superior electrical properties under mechanical strain. The core-shell nanofibers show potential for applications in wearable electronics with their excellent mechanical and electrical performance.
ADVANCED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Min Jung Kim, Zheng Min Huang, Yun Ki Kim, Jyongsik Jang, Jae Ryoun Youn, Young Seok Song
Summary: Understanding the rheological behavior of materials is crucial in science. In this study, a new optorheology phenomenon is observed in photosynthetic bacterial suspension, where the fluid viscosity changes due to light-induced electrons. The discovery of Type IV pili in photosynthetic bacteria allows electron transport and changes in cell surface potential, affecting the spatial arrangement of cells. This research has the potential for new applications at the intersection of optics, bioengineering, and rheology.
Article
Polymer Science
Seonghyun Kim, Seung Hui Lee, Subi Choi, Suk-kyun Ahn, Gi-Deog Jang, Jong S. Park, Dong Gi Seong
Summary: The PSA-silica nanocomposite thin-films with optimized process showed a 180% increase in tensile strength without significant loss in peel strength, thanks to reinforcement with polydopamine-embedded silica nanoparticles. Lap shear and probe tack tests successfully verified the reinforcing mechanism overcoming the trade-off relationship.
Article
Chemistry, Physical
Chengbin Yu, Hansu Kim, Jae Ryoun Youn, Young Seok Song
Summary: A modified graphene aerogel with high mechanical properties was synthesized in this work, addressing the structural stability issue commonly faced by graphene aerogels. The internal structure of the graphene aerogel was successfully cross-linked, enabling it to reduce volume shrinkage during the infiltration of phase change material (PCM), and accommodate additional pure PCM without structural damage. This cross-linked graphene/cysteamine aerogel (GCA) supported PCM composites that can readily absorb solar light to transfer thermal energy and generate electrical energy through a PN junction thermoelectric power generator (PN TEG).
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Composites
Seung Mo Son, Minjung Kim, Jung Jae Yoo, Min Seong Kim, Byeong-Su Kim, Dong Gi Seong
Summary: An efficient process for improving the water stability of carbon fiber reinforced thermoplastic (CFRTP) has been proposed by coating fluorinated polydopamine (f-PDA) on PA 6-based CFRTP. The f-PDA-CFRTP showed enhanced mechanical properties, with a 16% increase in interlaminar shear strength and a 31% increase in flexural strength when immersed in water. It also exhibited improved anti-icing performance, with a 49% reduction in surface energy. The f-PDA-CFRTP has potential applications in external parts of transportation industries, ensuring environmental reliability.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Mechanics
Jae Hyo Lee, Seung Mo Son, Jung Jae Yoo, Sang Woo Kim, Jin Woo Yi, Dong Gi Seong
Summary: Thermoplastic resin transfer molding (T-RTM) of polyamide 6-based composite is improved by introducing zeolite particles to eliminate side reactions caused by water during anionic polymerization of the monomer. The selective water-absorbing effect of zeolite particles is verified, and the mechanical properties of the resultant composite are investigated. The T-RTM process is expected to have improved processability and quality control, making it a viable technology for mass-production of thermoplastic composites.
KOREA-AUSTRALIA RHEOLOGY JOURNAL
(2023)