Article
Polymer Science
Sang Hyeok Seo, Yong Ku Kwon, Hyoung-Joon Jin, Jin-Kyun Lee, Hyoung Jin Choi
Summary: We fabricated core/shell composite microspheres of semiconducting poly(o-anisidine) (POA) coated polystyrene (PS) and used them as electrorheological (ER) material. The coating of POA onto the PS particles was confirmed to be uniform through morphology analysis. The chemical structures and thermal behaviors of the composite microspheres were identified.
Article
Engineering, Chemical
Weijian Sun, Zhenyu Xi, Haonan Zheng, Yi Chen, Changhao Li, Baoxiang Wang, Chuncheng Hao
Summary: The silicon oxide coated flower-like sheet layered MOS2 was synthesized by a simple two-step method, characterized by various techniques, and tested for its electrorheological performance and dielectric properties. The comprehensive analysis showed that MoS2/SiO2-based electrorheological fluid is a promising material.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Chemistry, Multidisciplinary
Yu Zhen Dong, Ehsan Esmaeilnezhad, Hyoung Jin Choi
Summary: Core-shell poly(diphenylamine)-coated magnetite microspheres were designed and used as a novel smart material that can respond under both electric and magnetic fields. The material exhibited good electrorheological and magnetorheological responses in silicone oil, showing potential for various applications.
Article
Materials Science, Ceramics
Yi Chen, Weijian Sun, Haonan Zheng, Changhao Li, Bo Zhang, Baoxiang Wang, Chuncheng Hao
Summary: In this paper, a novel H2Ti2O5@MoS2@SiO2 ternary composite material with a unique core/shell structure was prepared by a combination of dual hydrothermal method and controlled hydrolysis method. The material exhibits active response characteristics and high electrical conductivity, as confirmed by electron microscopy showing a honeycomb structure and XRD analysis verifying the composition of the material.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Changhao Li, Yi Chen, Liyue Wang, Zishuo Wang, Yusheng Lin, Kesi Xiong, Baoxiang Wang, Chuncheng Hao
Summary: Electrorheological (ER) fluid is an intelligent material consisting of polarized micro- and/or nanoparticles dispersed into insulating oil. Recently, the incorporation of molybdenum disulfide (MoS2), a popular 2D material, has offered a new approach to develop high-performance ER materials. However, MoS2 ER material suffers from low polarization strength and high electrical conductivity. To overcome these limitations, a two-step method is used to prepare PANI and MoS2 hybrid composite nanoparticles with unique morphology. The optimized ratio of PANI to MoS2 is found to be 4:1, resulting in excellent material performance with shear stresses reaching 150 Pa. Overall, this material demonstrates great potential as an electrorheological material.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Elham Effati, Behzad Pourabbas
Summary: Silica/poly(hydroxyethylmethacrylate) (SiO2/PHEMA) core-shell hybrid nanoparticles were synthesized by grafting vinyltriemethoxysilane (VTMS) or 3-(methacryloxy)propyltrimethoxysilane (MPS) onto < 50 nm silica particles followed by distillation precipitation polymerization of 2-hydroxyethylmethacrylate (HEMA) to form the PHEMA shell. The hydrogel layer thickness was controlled by adjusting the polymerization conditions. Characterization techniques such as SEM, TEM, FTIR, TGA, and water contact angle measurement confirmed the successful modification and grafting of PHEMA onto the silica cores. The resulting SiO2/PHEMA core-shell nanoparticles can be applied in various fields.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Changhao Li, Zishuo Wang, Liyue Wang, Qiang Bai, Baoxiang Wang, Chuncheng Hao
Summary: In this study, TiOF2@SiO2 cubic-like core/shell nanoparticles were prepared using a simple two-step method. The coating of SiO2 was found to decrease the leaking electric current density and increase the shear stress, making the special cubic-like core/shell nanoparticles a promising electroresponsive material.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Liyue Wang, Changhao Li, Rui Wang, Yusheng Lin, Kesi Xiong, Baoxiang Wang, Chuncheng Hao
Summary: A core-shell composite nanoparticle for electrorheological fluid was successfully prepared, which exhibited a good electrorheological effect. The material combined the high specific surface area and low density of metal organic frameworks with the excellent dielectric properties of polyaniline. The nanoparticles with core-shell structure showed stronger interfacial polarization and displayed good electrorheological properties.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Chemical
Yi Chen, Weijian Sun, Haonan Zheng, Changhao Li, Bo Zhang, Baoxiang Wang, Chuncheng Hao
Summary: This study synthesized H2Ti2O5@SiO2 core-shell nanocomposite as ER material, showing higher polarization strength and proper dielectric relaxation, improving interface polarization and ER characteristics. The ER efficiency significantly improved after SiO2 coating, especially under higher applied electric field strength, demonstrating the promising potential of H2Ti2O5@SiO2 fluid as an ER material.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Engineering, Environmental
Suzhou Li, Jinhui Huang, Kaixin Yi, Haoliang Pang, Zhexi Liu, Wei Zhang, Chenyu Zhang, Si Liu, Jiaoni Li, Chunhua Liu, Wenli Shu
Summary: Based on this study, two different sizes of silica materials (silica beads and Nano-silica) were used to encapsulate a QQ bacterial strain (Rhodococcus sp. BH4). The results showed that both QQ beads could resist high pressure, acid, alkali, salt, and EDTA buffer. After five months of use, both beads still had more than 70% QQ activity. In the lab-scale continuous MBR experiment, the transmembrane pressure (TMP) reaching 50 kPa in the experimental groups was more than 3 times that in the blank group, and the TMP contamination time was extended from 5 to 6 days in the blank group to 18-19 days. Among them, silica beads greatly improved the compressive strength of the beads and performed better in QQ.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Weijian Sun, Haonan Zheng, Yi Chen, Changhao Li, Baoxiang Wang, Chuncheng Hao, Zhaoliang Xing
Summary: The study demonstrated the successful preparation of core-shell hollow TiO2@SiO2 spheres for electrorheological (ER) fluid material, which greatly enhanced its performance under various electric field strengths. The coated particles showed significant improvement in current meter performance, with shear stress values exceeding 200 Pa at 3.0 kV mm(-1). This innovative approach offers a promising ER candidate material with simple preparation and strong development potential.
ADVANCED ENGINEERING MATERIALS
(2021)
Review
Pharmacology & Pharmacy
Dnyaneshwar Kalyane, Narendra Kumar, Neelima Anup, Kuldeep Rajpoot, Rahul Maheshwari, Pinaki Sengupta, Kiran Kalia, Rakesh Kumar Tekade
Summary: This review highlights the potential of core-shell silica-based nanoparticles in developing next-generation therapeutics, covering their role in drug delivery, imaging, therapy, and challenges.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2021)
Article
Engineering, Manufacturing
Ji-Won Cheon, Il-Jin Kim, Ji-Hoon Kim, Ji-Won Jang, Dong-Jin Lee, So Youn Mun, Jun-Woo Park, Jin Hong Lee, Seunggun Yu
Summary: This study demonstrates the use of a composite filler composed of silica nanoparticles (NPs) and poly (ethersulfone) (PES) to improve the properties of epoxy nanocomposites for marine applications. The incorporation of silica NPs and covalent linking of PES to epoxy results in enhanced flexural strength and fracture toughness. Additionally, the flame retardancy and seawater resistance of the nanocomposites are significantly improved due to the thermally and chemically robust nature of PES and silica NPs.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Polymer Science
Jiagen Li, Xiaoyi Jian, Yuqing Wang, Zhanqiong Zhong, Xiaohong Fu, Guowei Deng, Zhonghui Li
Summary: A biodegradable silica was developed for tumor microenvironment responsive drug delivery with low drug leakage and good biosafety. The fabrication process and degradation of the drug delivery system were carefully studied. The method reported in this work may offer new insights for high-performance drug delivery systems.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Wenkui Song, Heng Zhai, Wei Ji, Yueqi Li, Changping Guo, Dunju Wang, Ruihao Wang
Summary: The study successfully reduced the sensitivity of high-energy explosive material RDX using a PAC coating to form insensitive composite materials. This method provides a possible way to decrease the sensitivity of energetic crystals.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Polymer Science
Jongmin Q. Kim, Younghoon Choi, Youngtae Kim, Jin-Kyun Lee, Jin Hyun Lee, Hanwool Park, Sang-Min Lim, Choul-Gyun Lee, Dae Sung Lee, Yang-Ho Na
JOURNAL OF APPLIED POLYMER SCIENCE
(2020)
Review
Polymer Science
Qi Lu, Hyo Seon Jang, Wen Jiao Han, Jin Hyun Lee, Hyoung Jin Choi
MACROMOLECULAR RESEARCH
(2019)
Article
Multidisciplinary Sciences
Jin Hyun Lee, Wen Jiao Han, Hyo Seon Jang, Hyoung Jin Choi
SCIENTIFIC REPORTS
(2019)
Article
Chemistry, Physical
Stephanie K. Lee, Mei Wang, Jin Hyun Lee, Jonghwan Suhr
Article
Polymer Science
Wen Jiao Han, Jin Hyun Lee, Hyoung Jin Choi
Article
Nanoscience & Nanotechnology
Jongmin Q. Kim, Jin Hyun Lee, Junbeom Park, Hanwool Park, Sang-Min Lim, Choul-Gyun Lee, Jin-Kyun Lee
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Thermodynamics
Ju-Ho Jeong, Seungryong Hah, Deokjoo Kim, Jin Hyun Lee, Sung-Min Kim
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2020)
Article
Nanoscience & Nanotechnology
Jin Hyun Lee, Dae Sung Lee, Yong Chae Jung, Jeong-Wook Oh, Yang Ho Na
Summary: A new polyampholytic terpolymer hydrogel with enhanced skin adhesion was developed by tuning the structure of ion-pair associations and adding an extra neutral monomer component. Optimizing the feed concentration of the neutral monomer can decrease the cross-linking density of the hydrogel, increase compliance, and enhance skin adhesion.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Qi Lu, Jin-Hee Lee, Jin Hyun Lee, Hyoung Jin Choi
Summary: Magnetic and semiconducting Fe3O4/POA core/shell composite particles were successfully fabricated, leading to the development of a smart electro-magneto-rheological suspension with functionalities of magnetism and conductivity. The electrorheological properties of the suspension were studied under different electric field strengths, revealing a solid-like behavior under the electric field, with the dynamic yield stress of the ER fluid increasing linearly with the electric field strength following a power-law function.
Article
Engineering, Multidisciplinary
Wen Jiao Han, Jin Hyun Lee, Jin-Kyun Lee, Hyoung Jin Choi
Summary: In this study, we successfully synthesized tough, ultrastretchable, and biocompatible magneto-sensitive nanocomposite hydrogels with homogeneous nanoparticle dispersion. By evaluating their structure and properties under various weight fractions of magnetic nanoparticles and magnetic field strengths, we found that these hydrogels exhibit excellent magnetorheological properties and magneto-responsive performances. This hydrogel material holds significant potential for biomedical and pharmaceutical technologies.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Jeong-Seok Mun, Ji-Hoon Woo, Yejin Ku, Hyun-Taek Oh, Jin Hyun Lee, Jin-Kyun Lee, Kanghyun Kim, Byeong-Gyu Park, Sangsul Lee
Summary: In this study, a dendritic polyphenol with a high glass transition temperature (Tg) was synthesized and found to have a stable amorphous nature. The high Tg of the molecule allowed for the formation of high-resolution microlithography patterns using lithographic techniques. Additionally, the molecule was derivatized into a fluoroalkylated molecule, which also produced high-resolution features under electron-beam lithographic conditions.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Physical
Boryeong Lee, Minchul Sung, Kyounghee Shin, Jin Hyun Lee, Jin Woong Kim
Summary: This study examines the effects of ceramides with ultra-long chain and ceramides with three chains on the microphase transition of lipid assemblies. It is found that ceramides with ultra-long chain promote lateral lipid packing, while ceramides with three chains hinder lateral lipid packing. The addition of surfactants disrupts lipid packing and reduces the elasticity of lipid assemblies.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Jihyun Choi, Hajeong Kim, Hyunsuk Lee, SeungHwan Yi, Jin Hyun Lee, Jin Woong Kim
Summary: The hypothesis of this study is that anisotropic particles with a high aspect ratio can lead to favorable interfacial adhesion and enable Pickering emulsion stabilization. The experiments involved fabricating hydrophobically modified silica nanolaces and studying their behavior at the water-in-silicone oil interface. The findings showed that the nanolaces demonstrated enhanced interfacial attachment energy and improved stability and viscoelasticity of the emulsion.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Multidisciplinary Sciences
Jooyoung Lee, Boa Song, Ramesh Subbiah, Justin J. Chung, U. Hyeok Choi, Kwideok Park, Sang-Heon Kim, Seung Ja Oh
SCIENTIFIC REPORTS
(2019)
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.
