Synthesis and properties of combined type liquid crystalline polymers- aromatic polyeters bearing biphenylazopheyl mesogenic pendants connected to the backbone through polymethylene spacers

摘要

A series of new combined type liquid crsytalline plyesters (LCPs) were synthesized and their LC and other thermal proper- ties were characterized. These polymers consist of poly(oxy-1,4-phenyleneoxyterephtlaloyl) blackbone onto which the biphenylazophenyl mesogens are attached through the oxyoligomethyleneoxy spacers. The length of the oligomethylene units was varied from the pentamethylene to the decamethylene group.