Hyperbranched polyimide application in liquid crystal alignment layers
作者： Zhen Sun , Yinghan Wang
DOI: 10.1002/PAT.3043
关键词:
摘要: Several hyperbranched polyimides (HBPIs) were applied in liquid crystal (LC) alignment layers and exhibited outstanding performance for LC alignment. The maximum pretilt angle was above 8°, the minimum 4.2°. results of atomic force microscope measurement disclosed that a lot grooves aligned parallel to rubbing direction found not main factor angles are unambiguously associated with intrinsic HBPI chemical structures. thermal gravimetric analysis ultraviolet–visible spectra showed HBPIs had good stability excellent transmittance. T5 T10 higher than 360°C 400°C, respectively. Copyright © 2012 John Wiley & Sons, Ltd.
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