Catalyst-free and Reprocessable Aromatic Polydithiourethanes

IF 4.1 2区 化学 Q2 POLYMER SCIENCE
Bo Yang, Hai-Jun Feng, Tian-Tian Ni, Xiao-Rui Zhou, Tao Xie, Ning Zheng
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引用次数: 0

Abstract

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.

无催化剂和可再加工的芳香族聚二硫乙烷
在热固性材料中加入动态共价键有利于聚合物网络的再加工,从而满足聚合物循环利用的可持续要求。然而,由于苛刻的加工条件会引起副反应,许多材料的机械性能在再加工时往往会显著下降。在这项研究中,我们发现芳香族二硫代氨基甲酸键可以在温和的条件下发生解离,无需催化剂,从而实现了相应聚二硫氨基甲酸乙酯的高效再加工。因此,聚二硫氨基甲酸乙酯的机械性能在再加工后可以得到很大程度的保留。这种动态化学的发现有望拓宽动态共价聚合物网络的材料设计潜力。
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来源期刊
Chinese Journal of Polymer Science
Chinese Journal of Polymer Science 化学-高分子科学
CiteScore
7.10
自引率
11.60%
发文量
218
审稿时长
6.0 months
期刊介绍: Chinese Journal of Polymer Science (CJPS) is a monthly journal published in English and sponsored by the Chinese Chemical Society and the Institute of Chemistry, Chinese Academy of Sciences. CJPS is edited by a distinguished Editorial Board headed by Professor Qi-Feng Zhou and supported by an International Advisory Board in which many famous active polymer scientists all over the world are included. The journal was first published in 1983 under the title Polymer Communications and has the current name since 1985. CJPS is a peer-reviewed journal dedicated to the timely publication of original research ideas and results in the field of polymer science. The issues may carry regular papers, rapid communications and notes as well as feature articles. As a leading polymer journal in China published in English, CJPS reflects the new achievements obtained in various laboratories of China, CJPS also includes papers submitted by scientists of different countries and regions outside of China, reflecting the international nature of the journal.
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