Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/12477
Title: Shape memory effect of thermoplastic segmented polyurethanes with self-complementary quadruple hydrogen bonding in soft segments
Authors: Zhu, Y
Hu, J 
Liu, Y
Issue Date: 2009
Publisher: Springer
Source: European physical journal. E, Soft matter, 2009, v. 28, no. 1, p. 3-10 How to cite?
Journal: European physical journal. E, Soft matter 
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.
URI: http://hdl.handle.net/10397/12477
ISSN: 1292-8941
EISSN: 1292-895X
DOI: 10.1140/epje/i2008-10395-2
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