Volume 42, Issue 9 pp. 943-950
Concise Report

A Disulfide-Based Poly(ether-b-amide) Copolymer with Rapid Self-healing Ability under Moderate Conditions

Weijian Lu

Weijian Lu

Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049 China

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Ping Zhu

Ping Zhu

Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

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Ying Zhao

Ying Zhao

Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

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Dujin Wang

Dujin Wang

Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049 China

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Xia Dong

Corresponding Author

Xia Dong

Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049 China

E-mail: [email protected]Search for more papers by this author
First published: 19 December 2023
Citations: 1

Dedicated to the Special Issue of Emerging Themes in Polymer Science.

Comprehensive Summary

A disulfide-based poly(ether-b-amide) copolymer with rapid self-healing capability under moderate conditions was synthesized from 4,4’-dithiodibutyric acid (DTDBA), isophorondiamine (IPDA) and poly(tetramethylene oxide) (PTMO) based on a two-step method. The incorporation of IPDA with asymmetric structure and substantial steric hindrance not only effectively decreased the number of regular H-bonds, but also inhibited the crystallization of polyamide segments, imparting the synthesized poly(ether-b-amide) copolymer with an amorphous structural feature. Based on the coordination of segmental diffusion and recombination of disulfide bonds and hydrogen bonds, the scratches and damaged mechanical properties of PEBADS-I611 could be completely self-healed after healing at 40 °C for only 11 min and 3 h, respectively.image

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