MORPHOLOGICAL STUDY ON THE ORIENTED CHITOSAN FILM OBTAINED FROM PRE-SHEARED LIQUID CRYSTALLINE SOLUTION IN DICHLOROACETIC ACID

作     者：Zhong-ming Hu Li-heng Wu Da-cheng Wu Shou-xi Chen State Key Laboratory of Polymer Physics and Chemistry, Center for Molecular Science, Institute of Chemistry Chinese Academy of Sciences, Beijing 100080, China China Textile Academy Beijing 100025, China Textile College, Sichuan University Chengdu 610065, China 

作者机构：中科院化学所 高分子物理与化学国家重点实验室 北京 中国纺织研究院 北京 四川大学 四川 成都 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2001年第19卷第4期

页      面：385-390页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 0817[工学-化学工程与技术] 08[工学] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

主　　题：chitosan morphology orientation shear induced band texture liquid crystalline solution 

摘      要：The oriented chitosan films obtained from pre-sheared liquid crystalline chitosan/dichloroacetic acid (DCA) solutions were studied by means of polarized optical microscopy (POM), scanning electron microscopy (SEM), infra-red dichroism technique and wide angle X-ray diffraction (WAXD). The sheer induced band texture in the film was found to correspond to the sinusoidal fibrillar microstructure along the shearing direction on the basis of POM and SEM observations. The sinusoidal fibril was found to be lying within the film plane. The model of chitosan molecular orientation in the pre-sheared film with band texture can be established assuming that the main chain orients in the shearing direction and the side group is perpendicular to the shearing direction. The WAXD azimuthal scanning at 2 theta = 20 degrees indicates that the (002) plane orients perpendicular to the shearing direction.