New Synthetic Approach For the Synthesis of Liquid Crystalline Block and Graft Copolymers

Authors: Yeşim HEPUZER, İ. Ersin SERHATLI, Yusuf YAĞCI

Abstract: Liquid crystalline block and graft copolymers were synthesized according to the macroinitiator and macroinimer concept. For this purpose, side chain block copolymers (polytetrahydrofuran-b-polymethylmethacrylate) having liquid crystalline 4,4'- cyanobiphenyl blocks were prepared and characterized. Unlike the liquid-crystalline homopolymer with mesogenic units in the side chain, all block and graft copolymers showed a smectic A mesophase. The transition temperatures are hardly affected by the composition and molecular weight of the blolck copolymers.


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