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Water-driven programmable polyurethane shape memory polymer: Demonstration and mechanism

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5 Author(s)
Huang, W.M. ; School of Mechanical and Production Engineering, Nanyang Technological University, Singapore 639798, Singapore ; Yang, B. ; An, L. ; Li, C.
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Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.1880448 

We demonstrate the new features of a polyurethane shape memory polymer: water-driven actuation and recovery in sequence (i.e., programmable). Hydrogen bonding is identified as the reason behind these features. In addition, the absorbed water is quantitatively separated into two parts, namely, the free water and bound water. Their individual contribution on the glass transition temperature is identified.

Published in:
Applied Physics Letters  (Volume:86 ,  Issue: 11 )

Date of Publication: Mar 2005

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