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Autonomic self‐healing of poly(vinyl butyral)
Author(s) -
Arayachukiat Sunatda,
Doan Vu Anh,
Murakami Tatsuya,
Nobukawa Shogo,
Yamaguchi Masayuki
Publication year - 2015
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.42008
Subject(s) - x ray photoelectron spectroscopy , materials science , self healing , composite material , glass transition , adsorption , polyvinyl butyral , humidity , polymer chemistry , chemical engineering , polymer , chemistry , thermodynamics , physics , medicine , alternative medicine , pathology , engineering
ABSTRACT The self‐healing behavior of poly(vinyl butyral) (PVB) is evaluated below the glass transition temperature T g . It is found that PVB shows autonomic self‐healing even at room temperature, although T g is around at 76°C. Furthermore, a large amount of water is found to be adsorbed on the surface of the film. This is attributed to the surface localization of hydroxyl group in PVB, which is confirmed by X‐ray photoelectron spectroscopy. Since the surface is plasticized by water, the scar applied by a razor blade is healed even in the glassy state of the bulk. Moreover, the healing efficiency is enhanced at high humidity condition, owing to the pronounced plasticizing effect by water. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42008.