Mwd Measurements of Liquid Crystalline Aromatic Polyesters by Gpc-Lalls Using A Mixed Solvent

Abstract

A GPC-LALLS method was developed to measure the molecular weight distribution(MWD) of liquid crystalline aromatic polyesters(LCPs). Pentafluolophenol and chloroform(35:65% by weight) as a mixed solvent was found to maintain the stability of LCPs solutions and to yild reliable GPC-LALLS curves for LCPs at room temperature.