Article
Food Science & Technology
Tai-Ti Liu, Xin-Yi Zhuang, Tsung-Shi Yang
Summary: This research aimed to modify gelatin to enhance its water solubility, surface activity, foaming capacity, pH buffering ability, antioxidant activity, and antimicrobial activity. The modified gelatin showed good functionalities and can be used in various industries.
Article
Chemistry, Multidisciplinary
Xiaojie Shao, Lijuan Su, Jiaojiao Zhang, Zishang Tian, Ning Zhang, Yingxiong Wang, Hongliang Wang, Xiaojing Cui, Xianglin Hou, Tiansheng Deng
Summary: By pre-treating an acid resin catalyst, a high yield of phthalic anhydride (PA) can be achieved from the Diels-Alder adduct of furan and maleic anhydride, while suppressing side reactions effectively. The deactivation mechanism of the catalyst is mainly attributed to the destruction of the resin skeleton during the reaction.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Physical
Marie-Helene Pietraru, Nicolas Lentz, Louise Ponsard, Emmanuel Nicolas, Thibault Cantat
Summary: In order to reduce our reliance on fossil feedstock, alternative sources for polymeric materials have been sought in recent years. This study presents a new approach to the formation of a useful monomer for polyesters, succinic anhydride, through the catalytic carbonylation of bio-sourced acrylic acid. The use of an Earth-abundant metal catalyst, [Co-2(CO)(8)], along with a bidentate ligand, 1,2-bis(dicyclohexylphosphino)ethane (dcpe), and H-2, successfully tackles the challenging carbonylation of unsaturated carboxylic acids.
Article
Chemistry, Multidisciplinary
Parushuram Nilogal, Gauthama B. Uppine, Ranjana Rayaraddi, Harisha K. Sanjeevappa, Lavita J. Martis, Badiadka Narayana, Sangappa Yallappa
Summary: This research paper describes the fabrication of bionanocomposites based on silk fibroin and reduced graphene oxide. The nanocomposites were characterized using various techniques such as UV-visible spectroscopy, X-ray diffraction, and scanning electron microscopy. The results showed that the addition of rGO increased the electrical conductivity of the SF biopolymer, demonstrating improved conductive behavior of the bionanocomposites.
Article
Chemistry, Multidisciplinary
Huifa Zhang, Shaolin Wang, Huixian Zhang, James H. Clark, Fahai Cao
Summary: The study presents a simple and eco-friendly method for the selective synthesis of maleic acid (MA) from furfural oxidation using the biomass-derived P-C-T catalyst in water. The P-C-600 catalyst exhibited remarkable catalytic activity, with the ability to be reused six times, attributed to its unique structure and suitable acidity.
Article
Materials Science, Composites
Ming Yuan Wang, Xiao Lei Zhao, Shou Wu Yu, Gui Xiang Hou
Summary: In this study, hybrid nanoparticle HNTs-e-POSS was prepared by grafting E-POSS onto HNTs through modification. The experimental results show that the addition of HNTs-e-POSS nanoparticles can improve the strength, toughness, storage modulus, glass transition temperature, and thermal stability of the composite material.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Physical
Tao Wang, Li-Chao Jing, Zelong Bao, Pengfei Qian, Wenming Geng, Anita Sagadevan Ethiraj, Wen-Hao Geng, Lvyun Chen, Qingxia Zhu, Hong-Zhang Geng
Summary: The study successfully synthesized high-quality graphene nanosheets using a green method and applied them to flexible transparent conductive films, resulting in excellent performance of Au-Gr/GCNT-PET TCFs. Ultimately, the films were used as anodes for OLED devices, achieving high luminance and current efficiency.
SURFACES AND INTERFACES
(2021)
Article
Polymer Science
Chunai Dai, Yang Shi, Zhen Li, Tingting Hu, Xiao Wang, Yi Ding, Luting Yan, Yaohua Liang, Yingze Cao, Pengfei Wang
Summary: A series of epoxy vitrimers (EVs) with enhanced glass transition temperatures (Tgs) were synthesized by curing epoxy resin E51 with various ratios of phthalic anhydride and sebacic acid as curing agents, along with 1,5,7-triazabicyclic [4.4.0] dece-5-ene as a transesterification catalyst. The resulting EVs demonstrated improved thermal stability and a high usable Tg, making them suitable for potential applications under special environmental conditions.
Article
Materials Science, Composites
Xiao Lei Zhao, Gui Xiang Hou, Shou Wu Yu, Ming Yuan Wang
Summary: Hybrid nanoparticles were prepared by modifying halloysite nanotubes and acylated graphene oxide. The addition of these nanoparticles significantly improved the thermal and mechanical properties of galic acid epoxy resin.
POLYMER COMPOSITES
(2022)
Article
Physics, Applied
Yushun Zhao, Yufan Xu, Gilbert Teyssedre, Jianyi Xue, Yanning Zhao, Bin Du
Summary: In this study, the influence of methyl and carbon-carbon double bonds on the charge trap depth of epoxy materials was investigated using quantum chemical calculations and isothermal surface potential decay tests. It was found that the modulation of these chemical groups can alter the charge trap depth within and between molecular chains. The regulating mechanism was revealed from the microscopic perspectives of electron energy structure and electron cloud offset. The changes in surface charge trap depth of epoxy materials are primarily attributed to the changes in the spatial distribution of the electron cloud density caused by the interaction between the electron-donating methyl group and the electron-absorbing carbon-carbon double bond.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Yunhui Bao, Chunlian Tian, Huazhong Yu, Jian He, Ke Song, Jie Guo, Xianwu Zhou, Ou Zhuo, Shima Liu
Summary: This study successfully synthesized silver nanoparticles on the surface of graphene oxide using a green synthesis method, demonstrating the potential of plant-derived natural products as reducing agents and stabilizers for the preparation of metal nanoparticles and complexes.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Physical
Xue Liang, Xiaojie Li, Yong Tang, Xiyu Zhang, Wei Wei, Xiaoya Liu
Summary: In this study, graphene oxide (GO) sheets were covalently linked with hyperbranched epoxy resin to enhance the properties of epoxy composites. The functionalized GO sheets showed better dispersion and interfacial compatibility, leading to significant improvements in mechanical and thermal properties. The results suggest that the functionalized composite is a promising, all-purpose modifier for epoxy resins.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Hongyan Xia, Jiajia Li, Kai Wang, Xinguang Hou, Ting Yang, Jiajun Hu, Zhongqi Shi
Summary: By incorporating carbon spheres and graphene into epoxy composites, the thermal and wear properties of the composites can be improved, even at low graphene content. Through chemical functionalization of graphene by grafting epoxy chains, the total performance of the composites, especially the wear resistance, was significantly enhanced, with a reduction of wear rate by 95% at 20 wt.% E-g-AM compared to pure cured epoxy resin.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Polymer Science
Hechen Liu, Xuan Wu, Zhanpeng Guo, Peng Dong, Qi Ge, Liwei Wei, Zhanglin Sun
Summary: This study investigates the influence of the maleopimaric anhydride (MPA) content on the initiation and growth characteristics of electrical trees in epoxy resin. Results show that the MPA curing agent has a higher initiation voltage and inhibits the growth of electrical trees.
Article
Chemistry, Multidisciplinary
Markus Zegke, Dennis Groedler, Maximilian Roca Jungfer, Alexander Haseloer, Meike Kreuter, Joerg M. Neudoerfl, Thomas Sittel, Christopher M. James, Joerg Rothe, Marcus Altmaier, Axel Klein, Martin Breugst, Ulrich Abram, Erik Strub, Mathias S. Wickleder
Summary: Ammonium pertechnetate can react in specific conditions to form oxidotechnetate(V), and undergo hydrolysis in moist air. Experimental data indicates the presence of reduced technetium species, with various techniques used to identify and confirm the identity of these compounds.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Polymer Science
Fang Ren, Guangming Zhu, Jianqiang Xie, Kun Wang, Xiaoping Cui
JOURNAL OF POLYMER RESEARCH
(2015)
Article
Polymer Science
Yong-kun Wang, Wen-chao Tian, Guang-ming Zhu, Jian-qiang Xie
CHINESE JOURNAL OF POLYMER SCIENCE
(2016)
Article
Chemistry, Multidisciplinary
Jian-Qiang Xie, Guixiang Hou, Ruyue Sun
Article
Chemistry, Analytical
Yongkun Wang, Wenchao Tian, Jianqiang Xie, Yan Liu
Article
Materials Science, Multidisciplinary
Xiangyang Lian, Jianqiang Xie, Qiang Shi, Wanjun Liu, Shaowei Yao, Xiufang Sun
MACROMOLECULAR MATERIALS AND ENGINEERING
(2020)
Article
Polymer Science
Xiangyang Lian, Wanjun Liu, Jianqiang Xie, Qiang Shi, Shaowei Yao, Yuexin Guo, Yufeng Zhang
JOURNAL OF APPLIED POLYMER SCIENCE
(2020)
Article
Electrochemistry
Hang Fu, Chonghua Shi, Jiajin Nie, Jianqiang Xie, Shaowei Yao
Summary: A spherical Sn-MOF precursor was synthesized through hydrothermal method using 1,3,5-benzenetricarboxylic acid (H3BTC) as the organic ligand. Different Sn-MOF samples were obtained at different annealing temperatures. Sn-MOF-250, annealed at 250 degrees Celsius, showed stable structure and a specific surface area of 118.8 m(2) g(-1). As an anode material for lithium-ion batteries, Sn-MOF-250 maintained a specific capacity of 846.6 mA h g(-1) after 110 cycles at a current density of 100 mA g(-1). The excellent cycling performance can be attributed to the special framework structure of metal-organic frameworks (MOFs).
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Zhimin Wang, Xiangkai Zhang, Jianqiang Xie, Ruyue Sun, Qiang Shi
Summary: A series of epoxy-based liquid crystal monomers were synthesized using protocatechuic acid as the raw material. The effects of various spacer groups in the alkyl and side chains on the properties of liquid crystal monomers were investigated. It was found that an appropriate lateral epoxy substituent interval could improve thermal stability.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Xiangkai Zhang, Zhimin Wang, Jianqiang Xie
Summary: The epoxy resin based on p-coumaric acid and the fluorine-containing diamine curing agent based on bisphenol AF were synthesized and their chemical structure was confirmed. The performance of different curing systems, including HCA-EPBAFFP-0/10/20/30, was investigated and it was found that increasing BAFFP content improved the mechanical and dielectric properties of HCA-EP. HCA-EP-BAFFP-30 showed the highest impact and flexural strengths (7.14 KJ/m2 and 142 MPa), surpassing HCAP-EP-BAFFP-0 (2.9 KJ/m2 and 113 MPa) by 147% and 26%, respectively. Additionally, HCA-EP-BAFFP-30 exhibited the lowest dielectric constant and loss (Dk = 3.61 and Df = 0.00243 at 10 MHz), suggesting its potential for electronic packaging materials.
Article
Polymer Science
Zhimin Wang, Xiangkai Zhang, Jiajin Cai, Jianqiang Xie
Summary: In this study, a p-hydroxycinnamic acid-derived epoxy resin monomer was synthesized via a simple one-step reaction. The resulting epoxy resin demonstrated a high glass transition temperature, excellent hydrophobicity, and low dielectric loss. It also exhibited superior flame retardant properties, making it a promising candidate for the development of high-performance bio-based thermoset materials.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Chemistry, Applied
Xiangkai Zhang, Zhimin Wang, Jianqiang Xie
Summary: A novel fluorinated diamine curing agent (AFPCO) was synthesized from natural isoflavone daidzein, used to cure hydrogenated epoxy resin (DGEHBPA), and tested against commercially available DGEHBPA cured with 4,4 '-diaminodiphenylmethane (DDM). The results show that AFPCO is less reactive than DDM in the non-isothermal curing reaction kinetics study. Compared to DDM, the AFPCO cured material exhibits improved mechanical properties and flame retardancy, as well as a hydrophobic surface. Although AFPCO/DGEHBPA has a high dielectric constant, it maintains a low dielectric loss.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Article
Nanoscience & Nanotechnology
Zhimin Wang, Guixiang Hou, Jianqiang Xie, Zengping Zhang, Xiangkai Zhang, Jiajin Cai
Summary: This study focuses on the production of bio-based fluorinated epoxy resin SA-BTB-EP and its composite with DDM. The results showed that SA-BTB-EP/DDM exhibited improved storage modulus, carbon residue, dielectric properties, and hydrophobicity compared to DGEHBA/DDM. Moreover, the inclusion of a Schiff base structure in SA-BTB-EP led to enhanced flame retardancy and reduced combustion byproducts.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Hou Gui-xiang, Xie Jian-qiang, Yao Shao-wei, Zhang Yun-jie, Lan Wen
CAILIAO GONGCHENG-JOURNAL OF MATERIALS ENGINEERING
(2020)
Article
Materials Science, Multidisciplinary
Hou Gui-xiang, Xie Jian-qiang, Li Ting-ting, Gao Jun-gang, Chang Jiao
CAILIAO GONGCHENG-JOURNAL OF MATERIALS ENGINEERING
(2017)