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STIMULI-RESPONSIVE LIQUID CRYSTALLINE NETWORKS

United States Patent Application

20170240811
A1
View the Complete Application at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
Liquid crystalline network compositions comprising azo-containing aromatic epoxy units cross-linked with alkylene diacid units having alkylene segments containing at least one methylene unit, wherein the azo-containing aromatic epoxy units and alkylene diacid units are connected by ester linkages resulting from ring-opening esterification between the epoxy units and alkylene diacids, and wherein the azo-containing aromatic epoxy units and alkylene diacid units are in a molar ratio that results in the liquid crystalline network composition exhibiting a glass transition temperature (T.sub.g) of at least 25.degree. C. Methods for producing these compositions and their use in light- or thermal-activated physical deformation, shape memory applications, and self-healing, as well as their ability to be recycled and used in additive manufacturing processes are also described.
LI, Yuzhan (Pullman, WA), RIOS, Orlando (Knoxville, TN), KESSLER, Michael Richard (Pullman, WA)
15/ 409,717
January 19, 2017
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH [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.