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Journal of Materials Science
Published in: Journal of Materials Science 2/2017

19-09-2016 | Original Paper

Autonomic healing of thermoplastic elastomer composed of triblock copolymer

Authors: Ritsuko Watanabe, Takumi Sako, Suphat Korkiatithaweechai, Masayuki Yamaguchi

Published in: Journal of Materials Science | Issue 2/2017

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Abstract

In this paper, we demonstrated that commercially available triblock copolymers such as polystyrene-b-polybutadiene-b-polystyrene (SBS) and polystyrene-b-polyisoprene-b-polystyrene (SIS), used as thermoplastic elastomers, exhibit autonomic self-healing behavior at room temperature without any chemical reaction even after cutting into two separate pieces. The healing efficiency is improved by immediate recombination after cutting, and is attributed to the destruction of the microstructure, i.e., polystyrene domains, leading to marked molecular mobility. Furthermore, quenched samples with obscure phase-separation exhibit good healing behavior. Finally, SBS has better healing efficiency than SIS because the solubility parameter of polybutadiene is closer to that of polystyrene than that of polyisoprene; to some extent, the solubility parameter is responsible for enhanced molecular motion owing to the mutual dissolution of both components.
previous article Sliding wear behavior of polymers studied with mesoscopic molecular dynamics

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Metadata
Title
Autonomic healing of thermoplastic elastomer composed of triblock copolymer
Authors
Ritsuko Watanabe
Takumi Sako
Suphat Korkiatithaweechai
Masayuki Yamaguchi
Publication date
19-09-2016
Publisher
Springer US
Published in
Journal of Materials Science / Issue 2/2017
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-016-0419-1

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