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Issue 20, 2015
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Solvent-driven temperature memory and multiple shape memory effects

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Abstract

Thermally-activated temperature memory and multiple shape memory effects have been observed in amorphous polymers with a broad glass transition. In this work, we demonstrate that the same shape recovery behaviors can also be achieved through solvent absorption. We investigate the recovery behaviors of programmed Nafion membranes in various solvents and compare the solvent-driven and temperature-driven shape recovery response. The results show that the programming temperature and solvent type have a corresponding strong influence on the shape recovery behavior. Specifically, lower programming temperatures induce faster initial recovery rates and larger recovery, which is known as the temperature memory effect. The temperature memory effect can be used to achieve multi-staged and multiple shape recovery of specimens programmed at different temperatures. Different solvents can also induce different shape recovery, analogous to the temperature memory effect, and can also provide a mechanism for multi-staged and multiple shape memory recovery.

Graphical abstract: Solvent-driven temperature memory and multiple shape memory effects

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Article information


Submitted
06 Mar 2015
Accepted
09 Apr 2015
First published
09 Apr 2015

Soft Matter, 2015,11, 3977-3985
Article type
Paper
Author version available

Solvent-driven temperature memory and multiple shape memory effects

R. Xiao, J. Guo, D. L. Safranski and T. D. Nguyen, Soft Matter, 2015, 11, 3977
DOI: 10.1039/C5SM00543D

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