纤维素液晶溶液的制备及应用  

Preparation of cellulose liquid crystal solution and its application

作　　者：宋俊[1] 刘芳[1] 韩杨杨[1] 郑云波 SONG Jun;LIU Fang;HAN Yang-yang;ZHENG Yun-bo(School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China;Haixi Branch of China Textile Academy, Jinjiang 362200, Fujian Province, China)

机构地区：[1]天津工业大学材料科学与工程学院,天津300387 [2]海西纺织新材料工业技术晋江研究所,福建晋江362200

出　　处：《天津工业大学学报》2017年第1期27-30,共4页Journal of Tiangong University

基　　金：国家基础研究计划项目(973计划)(2014CB660813);天津市自然科学基金资助项目(14JCQNJC03600)

摘　　要：为了制备纤维素高强纤维,利用纤维素、液晶基元和离子液体制备了液晶溶液作为纺丝液,并纺制了高强纤维.研究了纤维素液晶溶液的液晶性以及纺制的纤维素纤维的表面形貌和力学性能.结果显示:液晶基元的纯度大于98%,结构与预期的吻合;纤维素和液晶基元之间是通过物理力相结合而不发生化学作用;形成的纤维素液晶为近晶相.添加了液晶基元的纤维素纤维比纯纤维素纤维更细,表面均没有明显缺陷;且机械强度可达到3.00 cN/dtex,比纯纤维素纤维提高34%.In order to prepare cellulose high-strength fiber, cellulose liquid crystal solution was prepared by using cellulose, mesogenic unit (CbP)and ionic liquid as spinning solution, and high strength fiber was spun. In this paper, liquid crystalline properties of cellulose liquid crystal solution and the surface morphology and mechanical properties of cellulose fibers are studied. The results show that : the purity of CbP is more than 98% and structure is consistent with the expectation; there is no chemical interaction between the cellulose and CbP,which is a combination of physical force or hydrogen-bonding force and the formed liquid crystal is of a smectic phase. The cellulose fibers added with CbP are finer than pure cellulose fibers, and its mechanical strength is 3.00 cN/dtex, which is 34% higher than that of pure cellulose fibers.

关 键 词：纤维素 液晶 近晶相 高强纤维 

分 类 号：TQ341[化学工程—化纤工业]