Researchers investigated the effects of polyphenols with different substituents, namely propyl gallate, catechol, and tert‐butylhydroquinone, on the selfhealing performance of polyurethanes. Polyurethanes with different polyphenols were synthesized and their self-healing abilities were characterized. Variable‐temperature FT‐IR spectra revealed that PTHFTDI‐Propyl gallate with electron‐withdrawing substituent exhibited the lowest decomposition and healing temperatures while TGA displayed that PTHFTDI‐Urushiol with electron‐donating substituent exhibited the best thermostability.  At the same temperature, the healing abilities of the three polyurethanes were ranked as follows: PTHFTDI‐Catechol < PTHFTDI‐Urushiol < PTHFTDI‐Propyl gallate.

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Journal reference:  Journal of Applied Polymer Science, https://doi.org/10.1002/app.47039

Provided by: Copyright © 1999-2018 John Wiley & Sons, Inc.

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© 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018135, 47039.

 

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