Polymer Bulletin, Vol.37, No.5, 625-629, 1996
Influence of Chirality on Phase-Behavior of Side-Chain Liquid-Crystalline Polymers
Two kinds of chiral side chain liquid crystalline polyacrylates were synthesized and characterized by DSC, POM and x-ray diffraction. The results indicated that chirality of side chain end group and spacer length strongly influence the phase behaviour of the polymers. The polymer P-I with one asymmetric carbon atom of end group exhibits enantitropic Smectic S-A and S-C* phases. The polymer P-III having two asymmetric carbon atoms displays enantitropic Smectic S-A and S-B phases. Formation of liquid crystalline polymorphism of polymers depends on spacer length of side chains.