The nematic thermotropic liquid crystalline behaviour of ten kinds of PEAs obtained was studied by polarizing microscope, DSC and X-ray diffraction.

• 用热台偏光显微镜,dsc和X光衍射方法研究了热致液晶的相转变行为,确认了这十种聚酯酰胺均为向列型热致液晶。