Deformation and Elastic Recovery of Acrylate-Based Liquid Crystalline Elastomers

Liquid crystalline elastomers (LCEs) are well known for their stimuli-responsive behavior. Of interest to the work presented here is the distinctive, nonlinear deformation of these materials to load. Here, we assess the cyclic deformation and elastic recovery of acrylate-based LCEs synthesized by ch...

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Bibliographic Details
Published in:	Macromolecules Vol. 52; no. 21; pp. 8248 - 8255
Main Authors:	Brannum, Michelle T, Auguste, Anesia D, Donovan, Brian R, Godman, Nicholas P, Matavulj, Valentina M, Steele, Aubrey M, Korley, LaShanda T. J, Wnek, Gary E, White, Timothy J
Format:	Journal Article
Language:	English
Published:	American Chemical Society 12-11-2019
Online Access:	Get full text
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Summary:	Liquid crystalline elastomers (LCEs) are well known for their stimuli-responsive behavior. Of interest to the work presented here is the distinctive, nonlinear deformation of these materials to load. Here, we assess the cyclic deformation and elastic recovery of acrylate-based LCEs synthesized by chain-transfer reactions. Mechanical deformation of the LCEs (prepared with this synthetic approach) beyond a threshold strain value does not elastically recover, unless heat-treated. The thermomechanical actuation of these materials exhibits limited hysteresis over five cycles. Exploration of the deformation mechanics and elastic recovery extends the understanding of this material composition and informs its potential use in applications.
ISSN:	0024-9297 1520-5835
DOI:	10.1021/acs.macromol.9b01092