Abstract

In this study, we fabricated liquid crystal polymer networks (LCNs) containing a large amount of crosslinker by scanning wave photopolymerization, and examined the effect of crosslinker concentration on molecular alignment behavior. Samples with different crosslinker concentrations were photopolymerized by unidirectionally scanning ultraviolet light, resulting in LCN films with uniaxial molecular alignment. The LCN films obtained from the compositions of only monomer or monomer and crosslinker had mesogens aligned in parallel to the light scanning direction. Moreover, the LCN films with high crosslinker concentrations were able to maintain their initial molecular alignment after repeated heating cycles.

摘要

在这项研究中，我们通过扫描波光聚合反应制备了包含大量交联剂的液晶聚合物网络（LCN），并研究了交联剂浓度对分子取向行为的影响。通过单向扫描紫外光使具有不同交联剂浓度的样品光聚合，从而产生具有单轴分子排列的LCN膜。由仅单体或单体和交联剂的组合物获得的LCN膜具有液晶元与平行于光扫描方向排列的液晶元。此外，具有高交联剂浓度的LCN膜在重复加热循环后能够保持其初始分子排列。