Catalyst-free and Reprocessable Aromatic Polydithiourethanes  

作　　者：Bo Yang Hai-Jun Feng Tian-Tian Ni Xiao-Rui Zhou Tao Xie Ning Zheng 

机构地区：[1]State Key Laboratory of Chemical Engineering,College of Chemical and Biological Engineering,Zhejiang University,Hangzhou,310058,China [2]Department of Colorectal Surgery and Oncology,Key Laboratory of Cancer Prevention and Intervention,Ministry of Education,The Second Affiliated Hospital,Zhejiang University School of Medicine,Hangzhou,310009,China

出　　处：《Chinese Journal of Polymer Science》2024年第10期1435-1441,I0007,共8页高分子科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.22275162 and 52322307)。

摘　　要：The incorporation of dynamic covalent bonds into thermosets facilitates the reprocessing of polymer networks,thereby meeting the sustainable requirements for polymer recycling.However,the mechanical properties of many materials often decline significantly upon reprocessing due to side reactions caused by harsh processing conditions.In this work,we find that the aromatic dithiocarbamate bond can undergo dissociation under mild conditions without the need for a catalyst,enabling the efficient reprocessing of the corresponding polydithiourethane.As a consequence,the mechanical properties of the polydithiourethane can be largely preserved after reprocessing.The discovery of this dynamic chemistry is anticipated to broaden the potential for material design in dynamic covalent polymer networks.

关 键 词：REPROCESSING Polydithiourethane Dynamic covalent bond 

分 类 号：TQ317[化学工程—高聚物工业]