On the Size Effect of Additives in Amorphous Shape Memory Polymers
Keyword(s):
Small additive molecules often enhance structural relaxation in polymers. We explore this effect in a thermoplastic shape memory polymer via molecular dynamics simulations. The additive-to-monomer size ratio is shown to play a key role here. While the effect of additive-concentration on the rate of shape recovery is found to be monotonic in the investigated range, a non-monotonic dependence on the size-ratio emerges at temperatures close to the glass transition. This work thus identifies the additives’ size to be a qualitatively novel parameter for controlling the recovery process in polymer-based shape memory materials.
2020 ◽
2008 ◽
Vol 47-50
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pp. 714-717
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2008 ◽
Vol 47-50
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pp. 690-693
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2011 ◽
Vol 179-180
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pp. 325-328
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