Abstract
This paper describes the fact that a kind of thermoplastic shape memory polyurethane with self-complementary quadruple hydrogen bonding units in soft segments can present a significant shape memory effect under the usually used thermodynamic programming condition. Compared with the control sample, it was observed that the introduction of self-complementary quadruple hydrogen bonding into soft segments increases the glass transition temperature from 28.3 ° C to 73.3 ° C. Therefore, the temporary deformation can be fixed well after cooling at room temperature; subsequently thermal responsive shape memory recovery can be triggered by heating up to 86 ° C. The immediate shape recovery ratio and shape fixity ratio can be 95.8% and 95.9%. Even after 24 hours relaxation for the stretched films, the corresponding R r and R f can be 94% and 60%. In contrast, the sample without quadruple hydrogen bonding shows that the elasticity and the deformation cannot be fixed after 24 hours relaxation.
Original language | English |
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Pages (from-to) | 3-10 |
Number of pages | 8 |
Journal | European Physical Journal E |
Volume | 28 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Feb 2009 |
ASJC Scopus subject areas
- Materials Science(all)
- Surfaces and Interfaces
- Chemistry(all)
- Biophysics
- Biotechnology