Carboxymethyl cellulose assisted mechanical preparation of cellulose nanocrystals with high yield

编号 020020002

推送时间 20190819

研究领域 林产化工 

年份 2019 

类型 期刊 

语种 英语

标题 Carboxymethyl cellulose assisted mechanical preparation of cellulose nanocrystals with high yield

来源期刊 Cellulose

期 第200期

发表时间 20190506

关键词 Cellulose nanocrystals (CNCs);  Ball millin;  g Sodium carboxymethyl cellulose (CMC);  Preparation; 

摘要 A facile protocol to prepare CMC/CNC suspensions with high yield of CNCs is presented, where CMC was used in combination with mechanical shearing to promote delamination of the cellulose fiber wall. The maximum yield of CNCs in the CMC/CNC suspension was 41.6%. Compared with a purely mechanical method, the yield of CNCs has been increased by 103%. The diameter and length of the obtained CNCs were 20–45 and 200–250 nm separately. The thermal stability of CNCs was higher than acid derived CNCs due to the unmodified surface groups. Thin films of neat CMC and CMC/CNC composites were prepared by solution casting. The SEM results showed good dispersion of CNCs in the matrix. The tensile strength of the film was increased compared with neat CMC film.

服务人员 尚玮姣

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