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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/14050

Title: Self-healing properties of poly(ethylene-co-vinyl acetate)
Authors: Osato, Ryuya
Sako, Takumi
Seemork, Jiraporn
Arayachukiat, Sunatda
Nobukawa, Shogo
Yamaguchi, Masayuki
Keywords: ethylene-co-vinyl acetate copolymer
self-healing
rheology
crystallinity
Issue Date: 2016-03
Publisher: Springer
Magazine name: Colloid and Polymer Science
Volume: 294
Number: 3
Start page: 537
End page: 543
DOI: 10.1007/s00396-015-3817-z
Abstract: Poly(ethylene-co-vinyl acetate) with 42 wt.% of vinyl acetate shows autonomic self-healing at room temperature without macroscopic flow. Intermolecular diffusion of amorphous chains through the jointed boundary, which occurs because of the large amount of amorphous chains with low glass transition temperature, is responsible for the healing phenomenon. Furthermore, the healing efficiency is found to be enhanced when the separated pieces are recombined immediately after cutting. This result indicates that the cut surface has marked molecular mobility owing to the destruction of crystallites during the cutting process, which is supported by differential scanning calorimetry measurements. The marked molecular mobility at the surface is, however, observed only for a short period after cutting, because further crystallization after cutting restricts the molecular motion.
Rights: This is the author-created version of Springer, Ryuya Osato, Takumi Sako, Jiraporn Seemork, Sunatda Arayachukiat, Shogo Nobukawa, Masayuki Yamaguchi, Colloid and Polymer Science, 294(3), 2016, 537-543. The original publication is available at www.springerlink.com, http://dx.doi.org/10.1007/s00396-015-3817-z
URI: http://hdl.handle.net/10119/14050
Material Type: author
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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