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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/14740

Title: Autonomic healing of thermoplastic elastomer composed of triblock copolymer
Authors: Watanabe, Ritsuko
Sako, Takumi
Korkiatithaweechai, Suphat
Yamaguchi, Masayuki
Keywords: thermoplastic elastomer
triblock copolymer
self-healing
viscoelastic properties
Issue Date: 2016-09-19
Publisher: Springer
Magazine name: Journal of Materials Science
Volume: 52
Number: 2
Start page: 1214
End page: 1220
DOI: 10.1007/s10853-016-0419-1
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.
Rights: This is the author-created version of Springer, Ritsuko Watanabe, Takumi Sako, Suphat Korkiatithaweechai, Masayuki Yamaguchi, Journal of Materials Science, 52(2), 2016, 1214-1220. The original publication is available at www.springerlink.com, http://dx.doi.org/10.1007/s10853-016-0419-1
URI: http://hdl.handle.net/10119/14740
Material Type: author
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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