中国发明专利：一种光致形变液晶高分子材料及其制备方法

发明（设计）人：俞燕蕾，林里，王蔚茹，徐吉翔

申请人：复旦大学

专利号：ZL 200710038100.3

摘要：

本发明属于液晶高分子材料技术领域,具体为一种新的光致形变液晶高分子材料。其化学结构是以乙氧基为主链,偶氮苯衍生物为侧链,并有部分交联。它以单环氧基和双环氧基的偶氮苯衍生物为单体,再与一定量光引发剂和阳离子引发剂混合,放入反应器中,选择合适反应温度,在一定波长光作用下,通过光引发阳离子共聚合得到。该液晶材料在紫外光作用下材料发生弯曲,且液晶的取向态不同时,材料呈现不同的光致弯曲行为,是一种可控的光致弯曲形变材料。本发明克服了传统以丙烯酸酯型偶氮苯衍生物为单体,采用光引发和热引发自由基聚合制备液晶高分子材料时存在的缺点,解决了长期以来形变仅表现为一维、二维方向上的光致伸缩,而无法呈现三维弯曲形变的问题,可用于驱动器和人工肌肉的研究。

Abstract：

The invention discloses a new photo-induced deforming liquid crystal macromolecular material in liquid crystal macromolecular material technical domain, which is characterized by the following: choosing ethoxyl group as main chain and azo-benzene derivant as lateral chain with part crosslinking; choosing azo-benzene derivant of monocyclic oxygen group and bicycle oxygen group as monomer; mixing finite quantity light trigger and trigger of positive ion; putting into reactor; choosing proper reacting temperature; copolymerizing the light trigger positive ion under the function of wavelength light; getting the product. This material is a controlled photo-inducer flexural deformation material, which can be used to study driver and artificial muscle.