乙基氰乙基纤维素/聚丙烯酸复合物膜结构和光学性能(英文)  

Ethyl-cyanoethyl Cellulose/Poly (Acrylic Acid) Composite: Cholesteric Structure and Optical Property

作　　者：王林格[1] 黄勇[2] 

机构地区：[1]中国科学院高分子物理与化学重点实验室,北京100080 [2]中国科学院广州化学所纤维素化学重点实验室,广东广州510650

出　　处：《中山大学学报（自然科学版）》2003年第A19期15-18,共4页Acta Scientiarum Naturalium Universitatis Sunyatseni

摘　　要：乙基氰乙基纤维素[(E-CE)C]可溶解在丙烯酸(AA)中形成胆甾相液晶,通过光聚合AA,原胆甾相结构可以被“固定”在(E-CE)C/聚丙烯酸(PAA)复合物中,其结构和选择性反射光性能通过电镜和紫外-可见光光谱进行了研究。研究表明该复合物膜的反射光波长和浓度呈指数关系,反射光强度与膜厚有一定关系,并在低于160℃时有很好的热稳定性。Ethyl-cyanoethyl cellulose [ (E-CE)C]/poly(acrylic acid) (PAA) composite films were prepared by photopolymerizing acrylic acid (AA) in (E-CE)C/AA cholesteric liquid crystalline solutions. Investigation of the structure and optical properly of the (E-CE) C/PAA cholesteric composite and was undertaken by using UV-VIS spectroscopy and TEM. It was found that the wavelength of reflection light was a function of the concentration, the reflectivity was increased with increasing the film's thickness and was decreased quickly when temperature above 160℃.

关 键 词：乙基氰乙基纤维素 高分子液晶 光聚合 复合物 

分 类 号：O631.3[理学—高分子化学]