纤维素多孔材料的制备与性能  

Preparation and Properties of Cellulose Porous Material

作　　者：崔莉[1] 贾军芳[1] 张传杰[1] 王蛟[1] 刘云[1] 朱平[1] 

机构地区：[1]武汉纺织大学化学与化工学院,湖北武汉430073

出　　处：《高分子材料科学与工程》2013年第10期142-145,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51073122);湖北省自然科学基金资助项目(2012FFB04602)

摘　　要：用氯化锌水溶液为纤维素的溶剂制备纤维素多孔材料。采用红外光谱和X射线衍射(XRD)分析了木浆纤维素和纤维素多孔材料的红外光谱和结晶性能,并研究了纤维素质量分数对纤维素多孔材料的吸湿性能和孔隙结构的影响。结果表明,氯化锌水溶液是一种非衍生化的纤维素溶剂,溶解再生后的纤维素分子间氢键被破坏,结晶结构由纤维素Ⅰ转变为纤维素Ⅱ型,结晶度由68%降低到22%。随着纤维素质量分数的增大,孔隙率和透气率降低、吸湿性和保湿性下降。与离子液体为溶剂制备的纤维素多孔材料相比较,氯化锌法制备的纤维素多孔材料具有双重尺寸大小的孔洞结构,其表现出的综合性质更优异。Cellulose porous material was prepared using zinc chloride aqueous solution as cellulose solvent. Structure and crystallization property were analyzed by FT-IR and X-Ray. The influence of cellulose mass fraction on mechanics performance, hygroscopicity and pore structure of cellulose porous material were investigated. The results show that zinc chloride aqueous solution is a kind of non-derivatized cellulose solvent, hydrogen bond between the cellulose molecules in regenerative cellulose was destroyed, the crystalline structure changes from cellulose i to cellulose Ⅱ type, and crystallinity decreases from 68 % to 22 %. With the increasing of cellulose content, porosity and permeability decrease, hygroscopicity and moisture retention decrease. Compared with cellulose porous material prepared using ionic liquid as solvent, cellulose porous material prepared using zinc chloride exhibits a pore structure with double size and better comprehensive properties.

关 键 词：纤维素 氯化锌水溶液 多孔 吸湿性能 

分 类 号：TQ352[化学工程]