Polyurethanes based on isophorone diisocyanate trimer and polypropylene glycol crosslinked by thermal reversible diels alder reactions

Polyurethanes based on isophorone diisocyanate trimer and polypropylene glycol crosslinked by thermal reversible diels alder reactions

ABSTRACT Crosslinked self‐healing polyurethanes based on Diels–Alder (DA) reaction were synthesized from a trifunctionalized isophorone diisocyanate (IPDI) and polypropyleneglycol prepolymer with furfuryl alcohol and a commercial bismaleimide. The DA reaction was followed by FTIR spectroscopy at dif...

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Bibliographic Details
Published in:Journal of applied polymer science Vol. 134; no. 9; pp. np - n/a
Main Authors: Irusta, Lourdes, Fernández‐Berridi, Ma José, Aizpurua, June
Format: Journal Article
Language:English
Published: Hoboken Wiley Subscription Services, Inc 05-03-2017
Subjects:
Bismaleimides
Chemical synthesis
Crosslinking
Diels-Alder reactions
Diisocyanates
Enthalpy
Fourier transforms
Furfuryl alcohol
Healing
Infrared spectroscopy
Kinetics
Materials science
Monitoring
Polymers
Polypropylene glycol
polyurethane
Polyurethane resins
Rate constants
Synthesis (chemistry)
Thermoplastic resins
Trimers
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Summary:ABSTRACT Crosslinked self‐healing polyurethanes based on Diels–Alder (DA) reaction were synthesized from a trifunctionalized isophorone diisocyanate (IPDI) and polypropyleneglycol prepolymer with furfuryl alcohol and a commercial bismaleimide. The DA reaction was followed by FTIR spectroscopy at different temperatures. From the infrared results the kinetic rate constants as well as the DA reaction reversibility were established. The retro DA reaction (rDA) and its reversibility was monitored by DSC according to the enthalpy involved in the process. The obtained polymers exhibited thermosetting properties at room temperature, although they showed thermoplastic behavior at high temperatures. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44543.
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ISSN:0021-8995
1097-4628
DOI:10.1002/app.44543