Biaxial Nematic Main-Chain Liquid Crystalline Polymers

4 Biaxial Nematic Main-Chain Liquid Crystalline Polymers 

In 1970 the existence of a biaxial nematic phase for thermotropic LCs was theoretically predicted by Freiser [73] the first-order transformation from the isotropic state to 

Windle and coworkers [51, 54, 56] have then interpreted some discrepancies between optical microstructures and X-ray diffraction patterns of nematic domains in copolyesters 3 and 6 in terms of biaxiality. 

Thin microtomed sections of these random copolyesters were 

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