Article
Engineering, Multidisciplinary
Maoping Lyu, Yingchun Liu, Xiangyu Yang, Dunsheng Liang, Yuanyuan Wang, Xiaofan Liang, Yijie Hu, Liyan Liang, Chaoqun Zhang
Summary: In this study, novel polyimine networks were prepared by curing a trifunctional aldehydes monomer with two kinds of diamine. The polyimine networks cured with 4,4'-diaminodiphenyl methane showed liquid crystalline properties with high Tg, high tensile strength, and excellent thermal stability. The incorporation of graphene nanoplatelets into these bio-based thermosets resulted in nanocomposites with remarkable thermal conductivity. Both the polyimine networks and their composites demonstrated complete recyclability due to the presence of dynamical Schiff-base structures.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Ping Yu, Haiyue Wang, Yi Wang, Dapeng Liu, Yumeng Xin, Ruiguang Li, Xuemeng Jia, Lin Liu, Dongen Zhang, Chunyu Wang, Jun Zhao, Zhaoming Zhang, Xuzhou Yan
Summary: Dynamic covalent chemistry offers great potential for producing recyclable polymers and thermosets, but achieving high-performance closed-loop recycling remains challenging. Introducing aromatic monomers and fluorine into covalent adaptable networks is an attractive method to address this challenge. In this study, the design and applications of polyimine vitrimers containing trifluoromethyl diphenoxybenzene backbones were focused on. The resulting fluorine-containing polyimine vitrimer networks showed good self-healability, malleability, and processability without the need for any catalyst, as well as decent mechanical strength, superior toughness, and thermal stability.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Yuli Wang, Anchang Xu, Lingwei Zhang, Zhicheng Chen, Rongyu Qin, Yang Liu, Xiancai Jiang, Dezhan Ye, Zengjin Liu
Summary: This study investigates the recycling of carbon fiber using bio-based polyimine vitrimers. The results show that the polyimine vitrimers exhibit good mechanical and degradation properties, and can effectively recycle carbon fiber under mild conditions. This research is significant for the development of eco-friendly carbon fiber composites.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Si Zhang, Shiyu Ji, Zifan Wang, Jian Zhang, Wei Zhao, Chaoshuai He, Yun Chen
Summary: Inspired by the mineral bridge in natural nacre, biomimetic composites (MSiCw-MGO-PI) were prepared and their mechanical properties and recyclability were investigated. The composites showed improved tensile strength and impact strength compared to the matrix, and the reinforcing phases were well dispersed, leading to high mechanical properties in multiple generations.
Article
Biochemistry & Molecular Biology
Yin Lu, Yaliang Peng, Yi Yang, Jiahao Liu, Kan Zhang
Summary: In this study, a benzoxazine monomer (oHPNI-fa) with both norbornene and furan groups was designed and synthesized to meet the urgent need for novel high-performance resins in the aerospace and electronics industries. The molecular structure of oHPNI-fa was verified through various characterization techniques. The thermally activated terpolymerization of oHPNI-fa was monitored and its low-temperature-curing characteristics were revealed and discussed. The resulting highly cross-linked thermoset based on oHPNI-fa exhibited excellent thermal stability and flame retardancy. The molecular design strategy used in this study provides a guide for the development of high-performance resins for aerospace and electronics applications.
Article
Chemistry, Multidisciplinary
Hailong Fan, Yirong Cai, Jian Ping Gong
Summary: This study demonstrates that copolymer hydrogels with rich one-component-rich segments exhibit higher mechanical strength compared to those with adjacent-rich monomer sequences. In saltwater, hydrogels with a rich cation-pi adjacent sequence show excellent mechanical strength and underwater adhesion.
SCIENCE CHINA-CHEMISTRY
(2021)
Article
Polymer Science
Yanlin Liu, Yueran He, Zhen Yu, Jianfeng Tong, Sican Zhou, Wanding Chen, Zixian Ye, Zhaobin Tang
Summary: This study introduces long aliphatic chains into amino acid type latent curing agents to improve their latent performance and solubility. The latent performance of the curing agents improves with the increase of chain length. The synthetic amino acids with amide and ester bonds can improve the thermal and mechanical properties of the resin and provide degradability in alkaline environments. This work is of great importance for the recycling research of latent CFRP.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Engineering, Environmental
Fabrice Tanguay-Rioux, Martin Heroux, Robert Legros
Summary: This study focuses on characterizing the physical properties of recyclable materials and proposes a novel approach to quantify the shape factor based on the void fraction of a waste item. By analyzing statistical parameters and exploring potential applications, the study demonstrates how these results can be used to improve mechanical sorting in material recovery facilities.
Article
Chemistry, Multidisciplinary
Qingwen Cao, Qiong Wu, Lin Dai, Xiaojun Shen, Chuanling Si
Summary: Through structural analysis, it is found that the strength and toughness of lignin-filled polymer blends (PMMA/L-g-PMMA) can be effectively adjusted by regulating the molecular weights, types and contents of S/G units, and flexible/rigid linkages in lignin macromolecules. This study not only provides a simple and effective strategy to overcome the heterogeneity of lignin, but also paves the way for high-value utilization of lignin on a broader scale.
Article
Chemistry, Multidisciplinary
Shanshan Wang, Yuemin Zhou, Yuqi Wang, Fuhao Dong, He Liu, Xu Xu
Summary: By using reverse vulcanization, the polyTA was stabilized with natural turpentine monomers (beta-pinene and limonene), resulting in transparent self-healing and antibacterial turpentine oil-modified polyTA (TA-beta and TA-LIM). TA-beta and TA-LIM exhibited favorable thermal stability, mechanical property, self-healing efficiency, and antibacterial capacity.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Polymer Science
Azamat Zhansitov, Zhanna Kurdanova, Kamila Shakhmurzova, Azamat Slonov, Ilya Borisov, Svetlana Khashirova
Summary: This study investigates the impact of solvent and monomer ratio on polyphenylene sulfone (PPSU) regarding molecular weight, chemical structure, and mechanical, thermal, and rheological characteristics. The use of dimethylsulfoxide (DMSO) solvent leads to cross-linking during polymer processing, increasing melt viscosity and necessitating complete removal of DMSO. N,N-dimethylacetamide proves to be the best solvent for PPSU production. Moreover, the synthesized PPSU exhibits comparable tensile modulus to the commercial analog Ultrason-P, but outperforms it in terms of tensile strength and relative elongation at break. These findings suggest the potential use of the developed PPSU for spinning hollow fiber membranes with a thin selective layer.
Review
Polymer Science
Md Mohosin Rana, Hector de la Hoz Siegler
Summary: PNIPAm has the potential for tissue engineering applications, but challenges such as mechanical strength and biocompatibility still need to be addressed. Researchers have explored various design variables to optimize the performance of PNIPAm-based scaffolds for guiding cartilage tissue regeneration.
Article
Biochemistry & Molecular Biology
Ana Gonzalez Moreno, Susana Guzman-Puyol, Eva Dominguez, Jose J. Benitez, Patricia Segado, Simone Lauciello, Luca Ceseracciu, Jose M. Porras-Vazquez, Laura Leon-Reina, Antonio Heredia, Jose A. Heredia-Guerrero
Summary: The addition of pectin allows for fine-tuning the properties of biocomposites, improving optical properties and thermal stability, and exhibiting good biodegradability.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Polymer Science
Xiang-Zhao Wang, Dong-Mei Xie, Xiao-Li Zhao, Yi-Dong Li, Jian-Bing Zeng
Summary: This study developed sustainable and reprocessable poly(urethane urea) covalent adaptable networks (CANs) by incorporating reversible piperazine-urea bonds (PaUBs) into castor oil-derived polyurethanes (CPUs). The CANs showed variable tensile behavior, excellent malleability, stable reprocessability, and multiple recyclability.
Article
Chemistry, Multidisciplinary
Nicola Migliore, Aleksander Guzik, Marc C. A. Stuart, Marc Pala, Adrian Moreno, Gerard Lligadas, Patrizio Raffa
Summary: We synthesized novel biobased thermoresponsive amphiphilic copolymers and studied their solution properties. Copolymers with similar molecular weight but different monomer distributions were prepared. These polymers showed different self-assembly and thermoresponsive behavior in water. By tuning the monomer ratio and distribution, different critical solution temperatures could be observed. Aggregates of various types were observed by transmission electron microscopy. The polymers also exhibited different surface activity and showed potential applications as biobased surfactants and water/oil emulsion stabilizers.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Jinye Zhang, Shichang Luo, Yunlong Ma, Ruiyang Li, Yinghua Jin, Li Qiu, Wei Zhang
Summary: This study presents the fabrication method of cylindrical monolithic polyimine vitrimer/graphene composites with excellent mechanical, compressive, rehealable and recyclable, and piezoresistive properties. The composites exhibit outstanding durable compressibility, rapid recovery to the original size, high compressive strength, and high conductivity. The rehealing process achieves nearly 100% recovery of the compressive strength and electric conductivity under mild conditions, which is a desirable feature for electronic materials.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Hoai T. B. Pham, Ji Yong Choi, Shaofeng Huang, Xubo Wang, Adam Claman, Michael Stodolka, Sadegh Yazdi, Sandeep Sharma, Wei Zhang, Jihye Park
Summary: The development of 2D electrically conductive metal-organic frameworks (EC-MOFs) has expanded the applications of MOFs. This study presents a new EC-MOF with a large surface area, high electrical conductivity, and tunable particle size. The framework also utilizes functional groups to host heterometal ions, providing new opportunities for expanding the library of EC-MOFs and exploring electronic applications.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Rao Tao, Xin Zhao, Tianshu Zhao, Miaomiao Zhao, Ruiyang Li, Tianfu Yang, Lizhi Tang, Yinghua Jin, Wei Zhang, Li Qiu
Summary: In this proof-of-concept study, Imi-cage and Phos-cage organic molecular cages were designed to enhance emission through confinement effect. The cages exhibited higher fluorescence than free molecules in solid states, showcasing the potential for developing solid-state highly fluorescent materials. Additionally, Imi-cage showed promise for ultra-sensitive detection of explosives.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Chao Liu, Yucheng Jin, Zonghua Yu, Lei Gong, Hailong Wang, Baoqiu Yu, Wei Zhang, Jianzhuang Jiang
Summary: The reaction of BPDDP with cyclohexanediamine results in the synthesis of nitrogen-rich porous organic cage BPPOC and two USTB-1 and USTB-2 COFs. The newly prepared COFs show enhanced iodine vapor adsorption capability and can be transformed between different structures by exchanging the imine unit. This transformation is influenced by the crystal structures and the porosity of the materials, with nitrogen atoms proving superior to sulfur atoms for POCs in iodine vapor capture.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Yu Gong, Hongyin Hu, Shaofeng Huang, Shuanglong Lu, Wei Zhang
Summary: In this study, phenylene-ethynylene-based conjugated microporous polymers were synthesized and used as templates for the controlled growth of ultrafine Pd nanoparticles, showing excellent catalytic performance in Suzuki-Miyaura coupling reaction.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Zhuoqiang Zhang, Dong Lei, Chenxuan Zhang, Zhenyu Wang, Yinghua Jin, Wei Zhang, Xiaokong Liu, Junqi Sun
Summary: Development of chemically recyclable plastics (CCRPs) is a fundamental solution to the global plastic waste crisis. A novel dual crosslinked CCRP, supra-CANs, possessing mechanical properties higher than commodity plastics, has been developed. The supra-CANs can be converted back into monomers at room temperature, enabling sustainable polymer-monomer-polymer circulation.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shaofeng Huang, Ji Yong Choi, Qiucheng Xu, Yinghua Jin, Jihye Park, Wei Zhang
Summary: Two covalent organic frameworks, MC-COF-1 and MC-COF-2, consisting of carbazolylene-ethynylene shape-persistent macrocycles with azine or imine linkages, were synthesized via imine condensation. The 2D frameworks are fully conjugated, imparting semiconducting properties, and exhibit high porosity with aligned porous channels. The frameworks can be doped with I-2 to enable electrical conductivity and have switchable electrical properties between conducting and insulating states.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Hongxuan Chen, Yiming Hu, Chaoqian Luo, Zepeng Lei, Shaofeng Huang, Jingyi Wu, Yinghua Jin, Kai Yu, Wei Zhang
Summary: This study reports the first example of ionic covalent adaptable networks (ICANs), a type of crosslinked ionomers, consisting of negatively charged backbone structures. The ICANs were prepared through spiroborate chemistry and exhibited rapid reprocessability and closed loop recyclability under mild conditions. The valuable monomers of the ICANs can be easily chemically recycled in almost quantitative yield by treating them with dilute hydrochloric acid at room temperature. This work demonstrates the great potential of spiroborate bonds as a novel dynamic ionic linkage for the development of new reprocessable and recyclable ionomer thermosets.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Yu Gong, Shaofeng Huang, Zepeng Lei, Lacey Wayment, Hongxuan Chen, Wei Zhang
Summary: This study successfully synthesized two double-walled covalent organic frameworks, which exhibited excellent stability and high porosity, making them suitable for gas storage and separation.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Youlong Zhu, Qiaoshuang Bai, Shan Ouyang, Yinghua Jin, Wei Zhang
Summary: The increasing global energy consumption has led to the development of renewable energy storage technologies. Covalent organic frameworks (COFs) have emerged as promising materials for lithium-ion batteries (LIBs) due to their high porosity and tunable functionalities. This review summarizes the recent progress in the application of COFs and their composites in LIBs, including cathode materials, anode materials, solid-state electrolytes, and separators.
Article
Chemistry, Multidisciplinary
Lacey J. J. Wayment, Xubo Wang, Shaofeng Huang, Matthew S. S. McCoy, Hongxuan Chen, Yiming Hu, Yinghua Jin, Sandeep Sharma, Wei Zhang
Summary: This study discovered a 3D covalent organic framework (COF) which is an intermediate in the early stage of polymerization and can slowly convert into single-handed helical covalent polymer (HCP) double helices through partial fragmentation and self-sorting with the aid of hydrogen bonding.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Ruiyang Li, Yunlong Ma, Tianfu Yang, Xiaoran Yang, Rao Tao, Yinghua Jin, Wei Zhang, Li Qiu
Summary: Incorporating an aggregation-induced emission (AIE) effect into polymers can create AIE-active polymers that have great potential in optoelectronics and sensing applications. This study successfully prepared a series of AIE-active polyimine vitrimers (TPE-PIs) by integrating AIE-active monomers into the polymer network. The TPE-PIs not only inherit the merits of PI vitrimers but also provide enhanced mechanical and luminescent properties compared to other AIE-active and AIE-inactive polymers. The possibility of significantly enhancing their photoluminescence intensity in an underwater environment makes them useful for underwater sensing and light-emitting applications.
ACS MATERIALS LETTERS
(2023)
Article
Engineering, Environmental
Miao Tian, Jianbo Shuai, Wei Zhang, Jimei Chen, Xiaohui Wang
Summary: In this study, a biomimetic approach was used to fabricate cellulose-based small-diameter artificial blood vessels (SDABV) with a hierarchical structure similar to native blood vessels (NBV). The cellulose SDABV showed similar mechanical performance to NBV and exhibited excellent biocompatibility and thrombosis inhibition. In vivo experiments on rabbit models confirmed the potential application of these biomimetic and functional hydrogel grafts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Mingsen Wang, Yinghua Jin, Wei Zhang, Yingjie Zhao
Summary: This review discusses examples of single-crystal polymers (SCPs) with unambiguous chemical structures, including 1D, 2D, and 3D architectures, offering critical insights into their structure-property relationships and design principles.
CHEMICAL SOCIETY REVIEWS
(2023)
Review
Chemistry, Multidisciplinary
Yanqing Ge, Yiming Hu, Guiyun Duan, Yinghua Jin, Wei Zhang
Summary: Alkyne metathesis (AM), a relative of alkene metathesis, has gained significant attention and is widely used in the synthesis of natural products, functional polymers, and molecular architectures. This article focuses on the rational design of catalysts, substrate structures, and reaction conditions to meet specific metathesis pathways and make the catalytic systems more user-friendly and practical.
TRENDS IN CHEMISTRY
(2022)
