用条带织构装饰技术研究液晶全芳共聚酯B—N的取向和非取向膜

Studies on Oriented and Unoriented Films of Liquid Crystalline Wholly Aromatic Copolyester B─N Using Technique of Banded Texture Decoration

用条带织构装饰技术研究液晶全芳共聚酯Ｂ—Ｎ的取向和非取向膜董炎明（厦门大学化学系，厦门，３６１００５）关键词共聚芳酯，条带织构，退火，取向膜，微纤全芳共聚酯Ｂ—Ｎ在分子量较高时能出现黑白相间的条带织构［１～５］，但分子量低时由于极易松驰，不能用普通剪...

Banded texture was decorated on oriented films of thermotropic aromatic copolyester B─N by annealing.The fibrils of three levels,which were macrofibrils of several ten mircron in diameter,fibrils of few micron and microfibrils of about 0.3 μm,were observed by using polarized microscope.After annealing,fibrils in different levels relaxed to different morphology.Macrofibrils still oriented along shear direction,but fibrils relaxed to be helical,and microfibrils relaxed to be waveform therefore the banded texture can be seen.On the other hand,both banded texture and fibrils decorated the annealed unoriented films,that revealed the distribution of directors within and out of domains and the variation of directors on boundaries.