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Recyclable, shape‐memory, and self‐healing soy oil‐based polyurethane crosslinked by a thermoreversible Diels–Alder reaction
Author(s) -
Zheng Kaiwen,
Tian Yazhou,
Fan Mengjin,
Zhang Junying,
Cheng Jue
Publication year - 2018
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.46049
Subject(s) - polyurethane , differential scanning calorimetry , materials science , fourier transform infrared spectroscopy , ultimate tensile strength , polymer chemistry , diels–alder reaction , solubility , maleimide , composite material , chemical engineering , chemistry , organic chemistry , physics , engineering , thermodynamics , catalysis
The recyclable, shape‐memory, and self‐healing soy oil‐based polyurethane (S‐PU) networks were constructed by the thermoreversible Diels–Alder (DA) reaction between S‐PU (sealed with furfuryl alcohol) and 1,5‐ bis (maleimido)‐2‐methylpentane. The DA and retro‐DA reactions between furan and maleimide were investigated by Fourier transform infrared spectroscopy, differential scanning calorimetry, solubility, and recycle testing. Moreover, the shape‐memory properties of the S‐PU networks were studied by qualitative recovery testing and quantitative cyclic tensile testing. Furthermore, the self‐healing properties of S‐PU networks were confirmed by cut, scratch, and tensile testing. The results showed that, compared to the traditional S‐PU, the novel S‐PU prepared in this work was recyclable and self‐healing. And although both of them have shape‐memory effect, the novel S‐PU has a higher shape fixed rate and shape recovered rate than the traditional S‐PU. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 46049.