天津科技大学学报2016，Vol.31Issue(4)：51-55,5.DOI:10.13364/j.issn.1672-6510.20150110
双醛纳米晶纤维素的制备及其表征
Preparation and Characterization of Dialdehyde Nano-crystalline Cellulose
摘要
Abstract
Nano-crystalline cellulose(NCC)was prepared through acid hydrolysis using dissolving pulp from hard wood, and then oxidized with sodium periodate to generate dialdehyde NCC.Oxidizing reaction parameters such as dosage of so-dium periodate,pH,reaction temperature to time were investigated in detail.The results show that the optimized reaction conditions are as follows:sodium periodate to NCC mass ratio was 2,pH was 3,the reaction temperature was 40,℃ and reaction time was 4,h,and then dialdehyde NCC with 73%, of the content of aldehyde groups was obtained.The results of characterizations with FTIR,XRD,AFM and the degree of polymerization(DP)show that dialdehyde NCC formed after oxidation,crystallinity of both NCC and dialdehyde NCC changed compared with dissolving pulp cellulose.The NCC has the rod structure and its size decreased after oxidization.The DP decreased significantly after hydrolysis and decreased fur-ther after oxidization with sodium periodate.关键词
纳米晶纤维素/高碘酸盐/氧化/双醛纳米晶纤维素Key words
nano-crystalline cellulose(NCC)/periodate/oxidation/dialdehyde NCC分类
化学化工引用本文复制引用
黄日晋,杨志恒,程小娟,刘泽华..双醛纳米晶纤维素的制备及其表征[J].天津科技大学学报,2016,31(4):51-55,5.基金项目
天津市科技支撑计划资助项目(12ZCZDGX01100) （12ZCZDGX01100）
