纳米纤维素的制备及其对纸张增强作用的研究  

Preparation of Nano-cellulose and Its Enhancements on Paper

作　　者：赵永虎[1,2] 王俊芬[1] 吴玉英[1,2] 张学铭[1,2] 

机构地区：[1]北京林业大学材料科学与技术学院,北京100083 [2]木质材料科学与应用教育部重点实验室,北京100083

出　　处：《造纸科学与技术》2015年第2期64-67,共4页Paper Science & Technology

基　　金：北京高等学校青年英才计划(YETP0766)资助项目

摘　　要：本文以漂白杨木浆为原料,采用硫酸水解与高速机械搅拌相结合的方法制备纳米纤维素,探究其最佳制备条件及对纸张的增强效果。结果表明：制备纳米纤维素的优化条件为：硫酸浓度55%,反应温度55℃,反应时间2h,高速分散时间为10min。在此条件下,所制得的纳米纤维素的得率为74.8%,且微观形态最好。所制备纳米纤维素的长度为68~175nm、宽度为21~55nm。添加所制的纳米纤维素对纸页的抗张强度、撕裂度、耐折度提高非常明显,且增强效果随着纳米纤维素添加量的增加而增加。In this paper, bleached poplar wood pulp was used as raw material. The combination of sulfuric acid hy- drolysis and high - speed mechanical treatment was apllied to prepare nano - cellulose. The optimal preparation conditions and enhancements effect on paper of nano - cellulose were explored. The results showed that , the opti- mum conditions for the preparation of nano -cellulose：sulfuric acid concentration was 55% , reaction temperature, reaction time and high -speed dispersion time were 55 ℃, 2h and 10min , respectively. Under this condition, the yield of self - made nano cellulose reached 74.8% , and morphology was the best , the length of the nano - cellu- lose prepared was 68 - 175nm, and the width was 21 - 55nm. The prepared nano -cellulose could improve ten- sile, tearing, folding strength of paper obviously, and the enhancement effect increased with increasing addition of nano - cellulose.

关 键 词：纳米纤维素 最佳条件 增强 

分 类 号：O636.01[理学—高分子化学]