Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/35011
Title: Influence of processing conditions on the microstructure and properties of shape memory polyurethane membranes
Authors: Hu, JL 
Zeng, YM
Yan, HJ
Issue Date: 2003
Publisher: SAGE Publications
Source: Textile research journal, 2003, v. 73, no. 2, p. 172-178 How to cite?
Journal: Textile research journal
Abstract: Solution-cast films of shape memory polyurethane are investigated by Fourier trans form infrared spectroscopy, differential scanning calorimetry, dynamic mechanical anal ysis, tensile properties, water vapor permeability, and shape memory effect tests. Samples cast at higher temperatures contain more hard segments in the crystalline state and better water vapor permeability than samples cast at lower temperatures. The change in water vapor permeability of shape memory polyurethane films with respect to temperature follows an S-shaped curve, and increases abruptly at Ts, the shape memory temperature of the soft segment. The higher the modulus ratio at two specified temperatures before and after Ts, the better the shape memory behavior of shape memory polyurethane.
URI: http://hdl.handle.net/10397/35011
ISSN: 0040-5175
DOI: 10.1177/004051750307300214
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