阔叶材纸浆纤维素制备胆甾型液晶的研究  

A Study of Cellulose Cholesteric Liquid Crystal Texture from Paper Pulp

作　　者：薛岚[1] 徐杰[1] 银鹏[1] 郭斌[1] 

机构地区：[1]南京林业大学理学院,江苏南京210037

出　　处：《华东交通大学学报》2011年第5期71-76,共6页Journal of East China Jiaotong University

基　　金：国家自然科学基金项目(20904022)

摘　　要：以阔叶材纸浆板为原料,研究硫酸水解条件下纤维素微晶悬浮液制备的实验条件,以及纤维素胆甾型液晶织态结构的形成、影响因素及其机理。设计两组实验,通过光学显微镜研究了温度变化对水解后纤维素微晶粒径分布的影响;通过FTIR表征水解前后纤维素微晶表面官能团的变化;通过偏光显微镜确定纤维素胆甾型液晶织构形成的临界浓度。结果表明:在60%,65%酸浓度,反应温度在60℃以上能得到稳定的纤维素微晶悬浮液;可确定出现胆甾型液晶相时的临界浓度,在此浓度之上,能有效形成胆甾型的液晶平面织构。Preparation of cellulose microcrystalline suspension,formation,influencing factor and mechanism of cellulose cholesteric liquid crystal are studied from broad leaf wood pulp.Cellulose microcrystalline size dis-tributions under different hydrolysis temperature are observed by optical microscopy.The surface of cellulose microcrystalline is characterized by FTIR.When the liquid crystal phase appears,the critical suspension con-centration is confirmed by polarizing microscope.The results show that the stable suspension of cellulose micro-tchrye scthalollienset erwiict hl itqhuei da ccirdy sctaol ntceexntturraet icoann obfe 6f0or% moerd 6a5bo%v ea na dc rtietimcpale rcaotnucree natrbaotivoe n.60 ℃ can be obtained,and that

关 键 词：纸浆纤维素 胆甾型液晶 织态结构 

分 类 号：O636.1[理学—高分子化学]