EFFECT OF PRETREATMENT METHOD ON THE PREPARATION AND CHARACTERIZATION OF NANOFIBRILLATED CELLULOSE(NFC)
Nanofibrillated cellulose(NFCs)have attracted great interest due to their environmentally friendly biocompatible nature.However,two challenging issues,namely the relatively yields and energy consumption,seem to be standing in the way of greater implementation of such bionanomaterial.Selective modifications on fiber surfaces as pretreatments to celluloses are regarded as promising methods to solve the above problems.Cellulase(E),refining(R)and carboxymethylation(CM)were applied to treat needle bleached kraft pulp(BSKP)before ultrasonic homogenizing(S).The samples were characterized with surface charge,FT-IR and TEM.The Degree of Substitution(DS)of carboxymethyl could be controlled by varying the molar ratio of reactive reagents and AGU.The occurrence of the carboxymethylation reaction was confirmed by FT-IR spectrometry with the appearance of characteristic signals for the carboxyl group.The results suggested that different pretreatment methods played a role on the preparation of NFCs,refined process would change the morphology,and the DS of carboxymethyl was most important for cellulose crystal disintegration.
Zhijun Hu Yan Zhang Shunli Kou
Zhejiang Province Collaborative Innovation Center of Agricultural Biologica Resources Biochemicl Manufacuring,Zhejiang University of Science and Technology Hangzhou,310023,China
国际会议
第五届制浆造纸新技术国际研讨会(ISETPP)暨第三届国际造纸与环境学术大会(IPEC)
广州
英文
1-5
2016-11-07（万方平台首次上网日期，不代表论文的发表时间）