热致液晶含氯侧基聚芳醚酮的单晶状条带织构  

The Single Crystal-like Banded Textures in the Films of a Thermotropic Liquid Crystalline Poly(aryl ether ketone) Containing a Lateral Chloro Group

作　　者：富露祥[1] 张善举[1] 张健[1] 刘景江[1] 杨德才[1] 孙辉[2] 王贵宾[2] 吴忠文[2] 

机构地区：[1]中国科学院长春应用化学研究所高分子物理开放实验室,长春130022 [2]吉林大学化学系,长春130023

出　　处：《高等学校化学学报》2000年第6期988-990,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金! (批准号 :2 99740 3 2 );国家科技部基础性研究重大关键项目基金! (批准号 :G-12 )

摘　　要：The banded textures in the films of a thermotropic liquid crystalline poly(aryl ether ketone) containing a lateral chloro group have been studied by means of transmission electron microscopy(TEM), electron diffraction(ED) and atomic force microscopy(AFM). The crystallization induced banded texture without external shear can be formed when the thin films were annealed at the temperature range(320—330 ℃) of the liquid crystalline state from the melt. The results show that the banded regions have high orientation of single crystal based on the orthorhombic packing and the growing direction of the bands is along the b axis of the crystals. This kind of single crystal like bands is due to the different orientation of the packing molecular chains. The molecular chains of the dark bands in the bright field electron micrograph are perpendicular to the film plane, while the ones of the bright bands are tilt along the b axis with the tilt angle upto ±20°. [WT5HZ]The banded textures in the films of a thermotropic liquid crystalline poly(aryl ether ketone) containing a lateral chloro group have been studied by means of transmission electron microscopy(TEM), electron diffraction(ED) and atomic force microscopy(AFM). The crystallization induced banded texture without external shear can be formed when the thin films were annealed at the temperature range(320—330 ℃) of the liquid crystalline state from the melt. The results show that the banded regions have high orientation of single crystal based on the orthorhombic packing and the growing direction of the bands is along the b axis of the crystals. This kind of single crystal like bands is due to the different orientation of the packing molecular chains. The molecular chains of the dark bands in the bright field electron micrograph are perpendicular to the film plane, while the ones of the bright bands are tilt along the b axis with the tilt angle upto ±20°. [WT5HZ]

关 键 词：聚芳醚酮 热致液晶聚合物 单晶状条带结构 

分 类 号：O632.7[理学—高分子化学] O631.12[理学—化学]