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Effect of Crosslinker Length and Composition on the Hydrophobicity and Thermomechanical Response of Acrylate-Based Shape-Memory Polymers

✍ Scribed by P. Daniel Warren; Dominic V. McGrath; Jonathan P. Vande Geest

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
632 KB
Volume
295
Category
Article
ISSN
1438-7492

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✦ Synopsis

Abstract

Chemical and mechanical experiments are reported to elucidate the macroscopic effects of crosslinker length and composition on the thermomechanical response of acrylate‐based SMPs. To this end, EGA‐based formulations underwent a battery of basic tests which revealed that by increasing crosslinker chain length, polymer T~g~ can be decreased but there will be increases in compliance, step recoverability, and damping in a glassy state. Addition of methacrylate groups can cause increases in swelling, T~g~, storage modulus in shorter chains, and greater damping at a rubbery state. All tested polymers exhibited mild hydrophilicity. PEGDA formulations exhibited good recoverability and could be an option for vascular applications.

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