Article
Engineering, Chemical
Keya Tang, Jincheng Wang
Summary: Montmorillonite was modified and used as an additive in chlorinated butyl rubber to improve its mechanical and damping properties. The modified montmorillonite showed enhanced tensile strength and stress relaxation rate in the rubber composite.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Engineering, Chemical
Jiacheng Chen, Jincheng Wang, Shuhong Li, Kailing Xiang, Shiqiang Song
Summary: CIIR/G2-Py-Zn2+ elastomers prepared by synthesizing second-generation polyurethane dendrimer terminated with pyridine (G2-Py) and chlorinated butyl rubber (CIIR) showed high stretchability and mechanical strength due to the friction between G2-Py and CIIR and the non-covalent bonds provided by G2-Py-Zn2+, which can dissipate energy, further improving the strength and extensibility. This modification technology provides wider applications for CIIR elastomers in daily life.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Polymer Science
Yunrui Lan, Weijin Song, Jincheng Wang
Summary: In this study, the application of dendrimers in damping modification of chlorinated butyl rubber (CIIR) was explored through molecular dynamics simulation. The results showed that the composite with 9-equivalent of dendritic polyamide G2 exhibited significant damping characteristics and good compatibility with CIIR. The study also found that the molecular chains of the G2/CIIR composite were closer, leading to increased internal friction and enhanced damping performance. Furthermore, the elastic stiffness tensors of the material remained almost constant while the glass transition temperature shifted to the low-temperature region, indicating a better damping performance in low-temperature environments.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2022)
Article
Polymer Science
Ting Gong, Jiancheng Liu, Jincheng Wang, Keya Tang, Wentong Lu, Liming Wang
Summary: A novel type of damping agent based on the grafting of hindered phenol (AG) with hydroxyl terminated hyperbranched polyester (HP102) was prepared and incorporated into chlorinated butyl rubber (CIIR) to prepare damping rubber composites. The test results showed that the incorporation of AG-HP102 significantly improved the damping performance, glass transition temperature, tensile strength, and elongation at break of the CIIR composite. These experiment results provide useful information for the design and fabrication of high-performance polymeric damping materials.
Article
Materials Science, Multidisciplinary
Yao Lu, Jincheng Wang, Le Wang, Shiqiang Song
Summary: This study investigated the use of polyamidoamine dendrimers for modifying chlorinated butyl rubber nanocomposites, which showed superior damping performance and self-healing ability, providing unique development opportunities in highly engineered fields.
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
(2021)
Article
Thermodynamics
K. Parvathi, Meenakshi Verma, M. T. Ramesan
Summary: This paper reports the characterization and properties of chlorinated natural rubber (Cl-NR)/polyindole (PIN) blend with different contents of nickel oxide (NiO) nanoparticles. The results showed that the blend nanocomposites had effective interfacial interaction between nanoparticles and the blend matrix, resulting in a regular arrangement and homogenous distribution of the nanofiller in the blend matrix. The inclusion of NiO improved the thermal stability, glass transition temperature, tensile strength, AC conductivity and dielectric properties of the nanocomposites, making them suitable for flexible electronic applications.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Polymer Science
K. Parvathi, B. K. Bahuleyan, M. T. Ramesan
Summary: This study investigated the structural, thermal, and temperature-dependent electrical properties of flexible conductive chlorinated natural rubber with various contents of nickel oxide nanoparticles. The addition of nanoparticles improved the thermal stability, dielectric properties, and AC electrical conductivity of the composites. The study emphasized the importance of interfacial interaction between the fillers and rubber chain for network formation.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2022)
Article
Computer Science, Information Systems
Sadia Afroze, Md. Rajib Hossain, Mohammed Moshiul Hoque, M. Ali Akber Dewan
Summary: This paper proposes a deep learning-based ensemble technique (V-ensemble) to identify speaking modes in low-resolution and noisy images. The proposed system integrates mouth region extraction and mouth state detection modules and achieves the highest accuracy on three datasets.
MULTIMEDIA TOOLS AND APPLICATIONS
(2023)
Article
Polymer Science
A. Nihmath, M. T. Ramesan
Summary: This study focused on the preparation of chlorinated nitrile rubber (Cl-NBR)/hydroxyapatite (HA) nanocomposites using an open two-roll mixing mill, and characterized their formation, dielectric properties, flame retardancy, diffusion and permeation properties of petroleum solvents. The incorporation of HA in Cl-NBR was confirmed by FTIR analysis, and the nanocomposites showed improved thermal stability and flame resistance with increasing HA loading. The study also found that the dielectric constant decreased with increasing frequency, and the solvent resistance properties were enhanced in the composite containing 7 phr HA sample.
Article
Chemistry, Multidisciplinary
K. Parvathi, B. K. Bahuleyan, M. T. Ramesan
Summary: This investigation focuses on the optical, thermal, and dielectric properties of chlorinated natural rubber/copper alumina nanocomposites. The study found that these nanocomposites have significant potential for being used in the fabrication of flexible dielectric materials.
RESEARCH ON CHEMICAL INTERMEDIATES
(2022)
Article
Polymer Science
K. Parvathi, B. K. Bahuleyan, M. T. Ramesan
Summary: This work investigates the optical, thermal stability, and temperature-dependent electrical properties of chlorinated natural rubber/zinc ferrite nanocomposites. The insertion of zinc ferrite into the rubber matrix leads to a decrease in bandgap energy. The nanocomposites exhibit enhanced thermal stability and electrical properties compared to the parent polymer. Additionally, the conductivity of the nanocomposites shows a non-ohmic behavior, indicating a dynamic relaxation process. The experimental results are in good agreement with theoretical models, suggesting the presence of interfacial interactions in the nanocomposites. These findings are significant for the development of highly-durable flexible electronic devices, actuators, supercapacitors, and elastomeric pressure sensors.
JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY
(2022)
Article
Polymer Science
Krishnanivas Parvathi, Manammel Thankappan Ramesan
Summary: The effect of titanium dioxide (TiO2) on the performance of chlorinated natural rubber/polyindole (Cl-NR/PIN) blend nanocomposites was systematically studied. The successful incorporation of nanoparticles in the blend system was confirmed by Fourier-transform infrared spectra. UV analysis showed increased absorption spectra of the nanocomposite compared to the pure blend. The X-ray diffraction, transmission electron microscope, and thermal analysis results demonstrated the presence of TiO2 nanostructure in the blend, uniform dispersion of TiO2, increased thermal stability, and improved conductivity and dielectric properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Mechanical
Junhui Li, Song Wang, Songqing Fu, Yeping Peng
Summary: This study systematically investigated the wear debris characteristics of different UHMWPE materials under various motion modes. It was found that the material type and motion mode had an impact on the quantity, size, morphology, and distribution characteristics of UHMWPE debris.
Article
Materials Science, Composites
A. Nihmath, M. T. Ramesan
Summary: The study investigated the molecular transport of petroleum fuels and oil through chlorinated NBR and its effect on AC conductivity and dielectric properties. Results showed that CI-NBR exhibited higher oil resistance and electrical conductivity compared to pure NBR.
PROGRESS IN RUBBER PLASTICS AND RECYCLING TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Utpal Dey, Max Lippoldt, Yizhang Li, Jan Hesselbarth
Summary: The research focused on dielectric dimers composed of spherical Alumina ceramic resonators, analyzing their electromagnetic scattering properties in different configurations and at millimeter-wave frequencies. Experimental and simulated results proposed electric and magnetic hotspots for near-field enhancement applications.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2021)
Article
Materials Science, Composites
Furong Sun, Jiyu Yang, Huan Zhang, Longfei Yi, Kaijun Luo, Lijuan Zhao, Jinrong Wu
COMPOSITES SCIENCE AND TECHNOLOGY
(2018)
Article
Chemistry, Multidisciplinary
Laura S. Diaz-Silvarrey, Kui Zhang, Anh N. Phan
Article
Chemistry, Multidisciplinary
Laiyun Wei, Xuan Fu, Mingchao Luo, Zhengtian Xie, Cheng Huang, Junjun Zhou, Yong Zhu, Guangsu Huang, Jinrong Wu
Article
Chemistry, Physical
Lijuan Zhao, Yi He, Huan Zhang, Longfei Yi, Jinrong Wu
JOURNAL OF ALLOYS AND COMPOUNDS
(2018)
Article
Polymer Science
Zheng-Tian Xie, Ming-Chao Luo, Cheng Huang, Lai-Yun Wei, Yu-Hang Liu, Xuan Fu, Guangsu Huang, Jinrong Wu
Article
Polymer Science
Cheng Huang, Guangsu Huang, Shiqi Li, Mingchao Luo, Han Liu, Xuan Fu, Wei Qu, Zhengtian Xie, Jinrong Wu
Article
Polymer Science
Yan Peng, Yi Yang, Qi Wu, Shixiang Wang, Guangsu Huang, Jinrong Wu
Article
Chemistry, Physical
Yan Peng, Lijuan Zhao, Changyue Yang, Yi Yang, Cheng Song, Qi Wu, Guangsu Huang, Jinrong Wu
JOURNAL OF MATERIALS CHEMISTRY A
(2018)
Article
Biochemistry & Molecular Biology
Rui Wu, Zuming Jiang, Zhenxing Cao, Zhaoyang Yuan, Yao Zhang, Lanlei Guo, Fuqing Yuan, Jinrong Wu, Jing Zheng
Summary: A simple method was proposed to achieve hydrophilic modification of waste rubber powder and used to reinforce a composite hydrogel, reducing environmental pollution caused by waste rubber. The modified waste rubber powder showed significant enhancement in mechanical properties, leading to a significant increase in tensile strength and elongation at the break of the composite hydrogel.
Article
Chemistry, Physical
Zhendong Huang, Biqiang Jin, Haitao Wu, Zihang Zeng, Minghui Huang, Jinrong Wu, Lusheng Liao, Jing Zheng
Summary: We propose a simple and rapid strategy to fabricate self-crosslinked dual-crosslinking elastomers with high mechanical properties. The elastomers are synthesized through one-pot copolymerization and consist of dual-network crosslinking with hydrogen bonds and Si-O-Si covalent bonds. These two crosslinking networks contribute to the mechanical properties and recoverability of the elastomers.
Article
Polymer Science
Hongyan Ouyang, Xiangyan Xie, Yuanjie Xie, Di Wu, Xingqi Luo, Jinrong Wu, Yi Wang, Lijuan Zhao
Summary: Compliant and tough poly (hydroxyethyl methacrylate) (PHEMA)-based hydrogels were developed with enhanced hydrogen bond-reinforcing interactions and phase separation inhibition by introducing maleic acid (MA) units. These hydrogels demonstrated high tensile strength, fracture strain, tensile modulus, and toughness, as well as good compliance comparable to silicone breast prosthesis. They also exhibited excellent self-recovery ability and fatigue resistance. Cellular and animal experiments confirmed their biocompatibility and stability, suggesting their potential as an alternative implant material for breast reconstruction.
Article
Polymer Science
Zhenxing Cao, Zhaoyang Yuan, Rui Wu, Haitao Wu, Biqiang Jin, Jing Zheng, Jinrong Wu
Summary: By introducing both PA and MBA into polyacrylamide hydrogel networks, a entangled network with chemically cross-linked chains and branched chains was constructed, resulting in hydrogels with both high toughness and high resilience.
Article
Chemistry, Multidisciplinary
Jinrong Wu, Li-Heng Cai, David A. Weitz
ADVANCED MATERIALS
(2017)
Article
Biochemistry & Molecular Biology
Jinrong Wu, Wei Qu, Guangsu Huang, Siyuan Wang, Cheng Huang, Han Liu
Article
Materials Science, Composites
Wang Xing, Hengyi Li, Guangsu Huang, Li-Heng Cai, Jinrong Wu
COMPOSITES SCIENCE AND TECHNOLOGY
(2017)
Article
Chemistry, Physical
Yiping Yin, Zhe Wang, Hua Zou
Summary: This study presents a novel method for preparing dimpled polymer-silica nanocomposite particles using interfacial swelling-based seeded polymerization. The optimized conditions allow for a relatively high percentage of dimpled particles to be achieved.
Article
Chemistry, Physical
Brenden D. Hoehn, Elizabeth A. Kellstedt, Marc A. Hillmyer
Summary: Porous materials with nanometer-scale pores have important applications as nanoporous membranes. In this study, ABA triblock copolymers were used as precursors to produce nanoporous polymeric membranes (NPMs) in thin film form by degrading the end blocks. Polycyclooctene (PCOE) NPMs with tunable pore sizes were successfully prepared using solvent casting technique. Oxygen plasma etching was employed to improve the surface porosity and hydrophilicity of the membranes. This study provides a straightforward method to produce tough NPMs with high porosity and hydrophilic surface properties.
Article
Chemistry, Physical
Vladislav S. Petrovskii, Stepan I. Zholudev, Igor I. Potemkin
Summary: This article investigates the behavior of linear and ring polypeptide chains in aqueous solution and explores the properties of the complexes formed by these chains with oppositely charged surfactants. The results demonstrate that the complexes of linear supercharged unfolded polypeptides and the corresponding surfactants exhibit impressive adhesive properties.
Article
Chemistry, Physical
Merve Cevik, Serkan Dikici
Summary: Cardiovascular diseases are a leading cause of death globally, and vascular grafts are a promising treatment option. This study focuses on tissue-engineered vascular grafts (TEVGs) using decellularized parsley stems as a potential biomaterial. The decellularized parsley stems showed suitable properties for TEVGs, providing a suitable environment for human endothelial cells to form a pseudo endothelium. This study showcases the potential of using parsley stems for TEVGs.
Article
Chemistry, Physical
Gustavo A. Vasquez-Montoya, Tadej Emersic, Noe Atzin, Antonio Tavera-Vazquez, Ali Mozaffari, Rui Zhang, Orlando Guzman, Alexey Snezhko, Paul F. Nealey, Juan J. de Pablo
Summary: The optical properties of liquid crystals are typically controlled by electric fields. In this study, we investigate the effects of microfluidic flows and acoustic fields on the molecular orientation and optical response of nematic liquid crystals. We identify several previously unknown structures and explain them through calculations and simulations. These findings hold promise for the development of new systems combining sound, flow, and confinement.
Article
Chemistry, Physical
Xinjun Wu, Xin Guan, Shushu Chen, Jiangpeng Jia, Chongyi Chen, Jiawei Zhang, Chuanzhuang Zhao
Summary: This research presents a novel shape memory hydrogel with a remodelable permanent shape and programmable cold-induced shape recovery behavior. The hydrogel is prepared using specific treatment methods to achieve shape fixation by heating and shape recovery by cooling. Additionally, deformable devices can be obtained by assembling hydrogel blocks with different concentrations.
Article
Chemistry, Physical
Rebecca Hengsbach, Gerhard Fink, Ulrich Simon
Summary: This study examines the properties of DNA functionalized pNipmam microgels and pure pNipmam microgels at different concentrations of sodium chloride and in PBS solutions using temperature dependent H-1-NMR measurements. The results show that DNA modification affects the volume phase transition temperature and the addition of salt and PBS further enhances this effect.
Article
Chemistry, Physical
Ningyi Li, Junhong Li, Lijingting Qing, Shicheng Ma, Yao Li, Baohui Li
Summary: This paper investigates the self-assembly behavior of colloids with competing interactions under spherical confinement and finds that different ordered structures can be formed under different sized spherical confinements. Moreover, more perforated structures are formed in smaller spheres.