期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 38, 期 1, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201600517
关键词
Alder-ene reaction; shape-memory materials; solid-state plasticity; TAD chemistry; thermoreversible networks
资金
- Belgian National Funds for Scientific Research
- University of Liege
- Belgian Science Policy
- Research Foundation - Flanders (FWO)
A chemically cross-linked but remarkably (re) processable shape-memory polymer (SMP) is designed by cross-linking poly(epsilon-caprolactone) (PCL) stars via the efficient triazolinedione click chemistry, based on the very fast and reversible Alderene reaction of 1,2,4-triazoline-3,5-dione (TAD) with indole compounds. Typically, a six-arm star-shaped PCL functionalized by indole moieties at the chain ends is melt-blended with a bisfunctional TAD, directly resulting in a cross-linked PCL-based SMP without the need of post-curing treatment. As demonstrated by the stress relaxation measurement, the labile character of the TAD-indole adducts under stress allows for the solid-state plasticity reprocessing of the permanent shape at will by compression molding of the raw cross-linked material, while keeping excellent shape-memory properties.
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