文献类型：期刊文献

英文题名：Dual closed-loop chemical recycling of synthetic polymers by intrinsically reconfigurable poly(disulfides)

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

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

年份：2021

卷号：4

期号：4

起止页码：1352

外文期刊名：MATTER

收录：;EI(收录号：20210809971166);WOS:【SCI-EXPANDED(收录号:WOS:000637800400006)】；

基金：This work was supported by National Natural Science Foundation of China (grants 22025503, 21790361, 21871084, 21672060), ShanghaiMunicipal 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). B.L.F. acknowledges the financial support of the Netherlands Ministry of Education, Culture and Science (Gravitation program 024.601035). Y.D. acknowledges the financial support of China Scholarship Council. We thank the Research Center of Analysis and Test of East China University of Science and Technology for help on the material characterization.

语种：英文

外文关键词：Additives - Plastics - Self-healing materials - Crystallinity - Metals - Ring opening polymerization - Synthetic polymers - Elastomers - Metal ions

摘要：The excessive use of plastics has led to severe global problems involving environmental, energy, and health issues and demands for sustainable and recyclable alternatives. Toward circular plastics, the development of efficient chemical recycling methods without loss of properties or allowing reprocessing into new materials offer tremendous opportunities. Here, we report an intrinsically recyclable and reconfigurable poly(disulfide) polymer using a natural small molecule, thioctic acid (TA), as the feedstock Taking advantage of its dynamic covalent ring-opening polymerization, this material enables a dual closed-loop chemical recycling network among TA monomers and two kinds of polymer products, including self-healing elastomers and mechanically robust ionic films. Mild and complete depolymerization into monomers in diluted alkaline aqueous solution is achieved with yields of recovered monomers up to 86%. The polymer materials can be repeatedly recycled and reused with reconfigurable polymer composition and tunable mechanical properties offering prospects for sustainable functional plastics.