Catalyst-free and Reprocessable Aromatic Polydithiourethanes

Bo Yang; Hai-Jun Feng; Tian-Tian Ni; Xiao-Rui Zhou; Tao Xie; Ning Zheng

doi:10.1007/s10118-024-3166-9

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Catalyst-free and Reprocessable Aromatic Polydithiourethanes

RESEARCH ARTICLE | Updated：2024-09-23

- Catalyst-free and Reprocessable Aromatic Polydithiourethanes
- Catalyst-free and Reprocessable Aromatic Polydithiourethanes
- 高分子科学（英文版） 2024年42卷第10期页码：1435-1441
- Affiliations：
  
  a.State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
  b.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
- Author bio：
  
  zhengning@zju.edu.cn
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (Nos. 22275162 and 52322307).
- DOI：10.1007/s10118-024-3166-9
  中图分类号：
- 收稿：2024-04-24，
  
  修回：2024-05-15，
  
  录用：2024-05-17，
  
  网络首发：2024-08-09，
  
  纸质出版：2024-10-01
- Accepted：
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Yang, B.; Feng, H. J.; Ni, T. T.; Zhou, X. R.; Xie, T.; Zheng, N. Catalyst-free and reprocessable aromatic polydithiourethanes. Chinese J. Polym. Sci. 2024, 42, 1435–1441

Bo Yang, Hai-Jun Feng, Tian-Tian Ni, et al. Catalyst-free and Reprocessable Aromatic Polydithiourethanes[J]. Chinese Journal of Polymer Science, 2024, 42(10): 1435-1441.
Yang, B.; Feng, H. J.; Ni, T. T.; Zhou, X. R.; Xie, T.; Zheng, N. Catalyst-free and reprocessable aromatic polydithiourethanes. Chinese J. Polym. Sci. 2024, 42, 1435–1441 DOI： 10.1007/s10118-024-3166-9.

Bo Yang, Hai-Jun Feng, Tian-Tian Ni, et al. Catalyst-free and Reprocessable Aromatic Polydithiourethanes[J]. Chinese Journal of Polymer Science, 2024, 42(10): 1435-1441. DOI： 10.1007/s10118-024-3166-9.

摘要

This study reveals that the aromatic dithiocarbamate bonds can undergo reversible dissociation under mild conditions in the absence of a catalyst. The superior dynamic capability of dithiocarbamate bonds enables the reprocessing of crosslinked polydithiourethane while maintaining its original mechanical properties.

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.

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references

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