文献类型：期刊文献

英文题名：In Situ Variation of Interpenetrating Polymer Network Topology using a Photolabile Connector

作者：Xiong, Xin-Hong[1];Xue, Lu-Lu[2];Wang, Sheng[3];Zhao, Shi-Fang[4];Guo, Xiang[4];Li, Mei[5];Cui, Jia-Xi[1,6]

机构：[1]Univ Elect Sci & Technol China, Yangtze Delta Reg Inst Huzhou, Huzhou 313001, Peoples R China;[2]Univ Penn, Dept Bioengn, Philadelphia, PA 19104 USA;[3]Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China;[4]Shaoxing Univ, Sch Med, Shaoxing 312000, Peoples R China;[5]Qilu Univ Technol, Shandong Acad Sci, Sch Mat Sci & Engn, Jinan 250353, Peoples R China;[6]Univ Elect Sci & Technol China, Inst Fundamental & Frontier Sci, Chengdu 610054, Peoples R China

年份：0

外文期刊名：CHINESE JOURNAL OF POLYMER SCIENCE

收录：SCI-EXPANDED(收录号：WOS:000819703200001)、、EI(收录号：20222712315042)、Scopus(收录号：2-s2.0-85133263236)、WOS

基金：This work was financially supported by the National Natural Science Foundation of China (No. 51973023), Sichuan Science and Technology Program (No. 2021JDRC0014), and the Colleges and Universities Twenty Foundational Projects of Jinan City (No. 2021GXRC068).

语种：英文

外文关键词：Interpenetrating polymer network; Network topology; o-Nitrobenzyl; Inimer; Mechanical property

外文摘要：A photo-controlled approach is developed to regulate the interpenetrating polymer network (IPN) topology by varying the connecting structure between the first and second networks. The approach is based on multifunctional inimer (Vinyl-oNB-Br) possessing three moieties, i.e., an acrylate-based double bond for incorporation within a polymer network, a Br group for grafting polymerization to get connect-IPN (c-IPN), and an o-nitrobenzyl spacer for photocleaving to convert the c-IPN to disconnected-IPN (d-IPN) with UV light irradiation. Such design allows for finely controlling the connection degree between two networks. A systematic study on the mechanical property of a series of samples with different connection degrees thus can be conducted. The results reveal that decreasing the connecting degree between two networks of IPN made a negligible contribution to materials' mechanical properties.