Preparation and Properties of Self-Healing Polyurethane Elastomer Derived from Tung-Oil-Based Polyphenol

A tung-oil-based polyphenol (ATOM), containing the phenolic hydroxyl group, was synthesized from tung oil and 4-maleimidophenol by the Diels–Alder addition reaction. Then self-healing thermosetting polyurethanes were prepared from ATOM and the polyurethane prepolymer. The chemical structure and cros...

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Bibliographic Details
Published in:ACS omega 2020-01, Vol.5 (1), p.529-536
Main Authors: Li, Mei, Ding, Haiyang, Yang, Xiaohua, Xu, Lina, Xia, Jianling, Li, Shouhai
Format: Article
Language:English
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Summary:A tung-oil-based polyphenol (ATOM), containing the phenolic hydroxyl group, was synthesized from tung oil and 4-maleimidophenol by the Diels–Alder addition reaction. Then self-healing thermosetting polyurethanes were prepared from ATOM and the polyurethane prepolymer. The chemical structure and cross-link network were confirmed by Fourier transform infrared spectroscopy (FTIR) and swelling tests. The products partially dissolved in trichlorobenzene when the temperature rose to 110 °C. Temperature-variable FTIR confirmed that the phenolic urethane starts to partially dissolve at 100 °C, which can be explained by the experimental phenomenon in swelling tests. Tensile property analysis showed that the broken and healed thermosets maintained about 46–64% of their original tensile strengths and 81–88% of their original elongations at break, respectively.
ISSN:2470-1343
2470-1343
DOI:10.1021/acsomega.9b03082