摘要
通过羧甲基化预处理和高压均质作用,从玉米芯发酵乙醇残余物中制备出纳米纤维素.探讨了羧甲基化程度对产品Zeta电位、粒径和纤维形貌等方面的影响,并通过透射电子显微镜(TEM)对制备的纳米纤维素形貌尺寸进行了表征;然后研究了纳米纤维素对纸页物理性能的影响.结果表明:羧甲基化预处理能促进纤维的细纤维化进程,但是过高的羧甲基化程度会使纤维溶于水;此外,制备的羧甲基纳米纤维素对纸页强度有明显的增加作用.
Nanocellulose was prepared from corn cob ethanol bioresidue using carboxymethylation-assisted high pressure homogenization.This paper discusses the effects of carboxymethylated substitution degree（DS）on Zeta potential,particles＇ size,fiber morphology,etc.The morphology and size of the extracted nanocellulose were characterized by transmission electron microscopy（TEM）.Then its effects on paper properties were studied.The results show that the carboxymethylation can facilitate the defibrillation of fibers,but excessive DS can lead to the dissolution of fibers in water.The nanocellulose prepared in this research can evidently increase the strength of paper.
作者
王红柳
王高升
韩笑宇
肖林
夏蕊蕊
覃树林
WANG Hongliu;WANG Gaosheng;HAN Xiaoyu;XIAO Lin;XIA Ruirui;QIN Shulin(Tianjin Key Laboratory of Pulp and Paper,College of Papermaking Science and Technology,Tianjin University of Science ＆ Technology,Tianjin 300457,China;Shandong Key Laboratory of Straw Biorefinement Technologies,Shandong Longlive Bio-technology Ltd.,Co.,Dezhou 251200,China)
出处
《天津科技大学学报》
CAS
2018年第3期40-45,共6页
Journal of Tianjin University of Science & Technology
基金
国家高技术研究发展计划(863计划)资助项目(2014AA021903)
天津市自然科学基金资助项目(16JCZDJC39700)
关键词
发酵乙醇残余物
纳米纤维素
纸页性能
corn cob ethanol bioresidue
nanocellulose
paper properties
