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3D PRINTABLE LQUID CRYSTALLINE ELASTOMERS WITH TUNABLE SHAPE MEMORY BEHAVIOR AND BIO-DERIVED RENDITIONS

United States Patent Application

20160289491
A1
View the Complete Application at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
Described herein are liquid crystalline elastomer compositions comprising aromatic epoxy units crosslinked with alkylene diacid units having alkylene segments containing at least one methylene unit, and/or aromatic epoxy units crosslinked with polyphenolic units, wherein the aromatic epoxy units and alkylene diacid units and/or polyphenolic units are in a molar ratio that results in the liquid crystalline elastomer composition exhibiting a glass transition temperature (T.sub.g) and a thermal stability of the liquid crystalline phase (T.sub.lc) that make them particularly suitable as shape memory materials and for use in methods of additive manufacturing. Methods for producing these compositions and their use in additive manufacturing processes are also described.
LI, Yuzhan (Pullman, WA), RIOS, Orlando (Knoxville, TN), JOHS, Alexander (Knoxville, TN), KESSLER, Michael Richard (Pullman, WA)
15/ 091,182
April 5, 2016
GOVERNMENT SUPPORT [0002] This invention was made with government support under Prime Contract No. DE-AC05-00OR22725 awarded by the U.S. Department of Energy, and Grant No. FA9550-12-1-0108 awarded by the Air Force Office of Scientific Research (USAF/AFOSR). The government has certain rights in the invention.