Thermal effects on liquid‐crystalline order in polymers with mesogenic side groups

X‐ray studies on polymers with phenyl benzoate side groups separated from the main chain by spacer groups of various lengths have been performed. It was found that the dimensions of liquid‐crystalline regions are 15–20 nm, and they contain four to six close‐packed layers. Thermal changes in x‐ray scattering are associated with the variation of sizes and concentration of liquid‐crystalline regions determined by the mobility of the main chain.