文献类型：期刊文献

英文题名：A Chemically Recyclable Crosslinked Polymer Network Enabled by Orthogonal Dynamic Covalent Chemistry

作者：Deng, Yuanxin[1,2,3,4];Zhang, Qi[3,4];Qu, Da-Hui[1,2];Tian, He[1,2];Feringa, Ben L.[1,2,3,4]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Univ Groningen, Stratingh Inst Chem, Nijenborgh 4, NL-9747 AG Groningen, Netherlands;[4]Univ Groningen, Zernike Inst Adv Mat, Nijenborgh 4, NL-9747 AG Groningen, Netherlands

年份：2022

卷号：61

期号：39

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20223512632035);WOS:【SCI-EXPANDED(收录号:WOS:000842960300001)】；

基金：This work was supported by National Natural Science Foundation of China (grants 22025503, 21790361, 21871084), Shanghai Municipal Science and Technology Major Project (Grant 2018SHZDZX03), the Fundamental Research Funds for the Central Universities, the Programme of Introducing Talents of Discipline to Universities (grant B16017), Program of Shanghai Academic/Technology Research Leader (19XD1421100), and the Shanghai Science and Technology Committee (grant 17520750100). This project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Skodowska-Curie actions grant agreement grant 101025041 (Q.Z.). B.L.F. acknowledges the financial support of the Netherlands Ministry of Education, Culture and Science (Gravitation program 024.601035). Y. Deng acknowledges the financial support of China Scholarship Council and funding from China Postdoctoral Science Foundation (2022TQ0105). The authors thank C. Shi at East China University of Science and Technology for the measurements of rheology and SAXS. The authors thank the Research Center of Analysis and Test of East China University of Science and Technology for the measurements of XRD. The authors thank Prof. K. Loos and Ing. J. vanDijken at University of Groningen for the assistance with materials characterization.

语种：英文

外文关键词：Chemical Recycling; Dynamic Covalent Chemistry; Poly(Disulfide)s; Supramolecular Materials; Sustainable Polymers

摘要：Chemical recycling of synthetic polymers offers a solution for developing sustainable plastics and materials. Here we show that two types of dynamic covalent chemistry can be orthogonalized in a solvent-free polymer network and thus enable a chemically recyclable crosslinked material. Using a simple acylhydrazine-based 1,2-dithiolane as the starting material, the disulfide-mediated reversible polymerization and acylhydrazone-based dynamic covalent crosslinking can be combined in a one-pot solvent-free reaction, resulting in mechanically robust, tough, and processable crosslinked materials. The dynamic covalent bonds in both backbones and crosslinkers endow the network with depolymerization capability under mild conditions and, importantly, virgin-quality monomers can be recovered and separated. This proof-of-concept study show opportunities to design chemically recyclable materials based on the dynamic chemistry toolbox.