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Home » Research » Publications

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On the size effect of additives in amorphous shape memory polymers

E. Mahmoudinezhad Zirdehi, H. Dumlu, G. Eggeler, F. Varnik

Materials, 14, 327, (2021)

DOI: 10.3390/ma14020327

Download: BibTEX

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.

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{"type":"article", "name":"e.mahmoudinezhadzirdehi20211", "author":"E. Mahmoudinezhad Zirdehi and H. Dumlu and G. Eggeler and F. Varnik", "title":"On the size effect of additives in amorphous shape memory polymers", "journal":"Materials", "volume":"14", "OPTnumber":"2", "OPTmonth":"1", "year":"2021", "OPTpages":"327", "OPTnote":"", "OPTkey":"shape memory polymers; additive effects; glass transition; bead-spring copolymer; molecular dynamics; chemo-thermal coupling; ESTANE;", "DOI":"10.3390/ma14020327"}
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