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Preparation of Nanocellulose by Using 4-Acetamido-TEMPO Oxidizing System and Ultrasonic Treatment
  
DOI：10.11980/j.issn.0254-508X.2013.08.002
Key Words:nanocellulose  4-acetamido-TEMPO  ultrasonic  carboxylate content
Author NameAffiliation
董凤霞1，2 1.中国制浆造纸研究院,北京,100102；2.制浆造纸国家工程实验室，北京，100102 
刘　文1，2 1.中国制浆造纸研究院,北京,100102；2.制浆造纸国家工程实验室，北京，100102 
陈雪峰1，2 1.中国制浆造纸研究院,北京,100102；2.制浆造纸国家工程实验室，北京，100102 
刘红峰3 3.山东省轻工业设计院,山东济南,250014 
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Abstract:Nanocellulose was prepared from cotton pulp by 4-acetamido-TEMPO-NaClO-NaBr oxidizing system with ultrasonic treatment. The carboxy content and DPv of unoxidized and oxidized cotton fibers were determined. The properties of oxidized cellulose were characterized by optical microscope and Infrared Spectrum (IR). The properties of oxidized cellulose with ultrasonic treatment were characterized by Scanning Electron Microscope (SEM) and Nanoparticle Size Analyzer. Results showed that the DPv of cotton fiber decreased significantly during the oxidizing reaction, the nanocellulose with the width of approximately 80 nm and the length of approximately 400 nm could be prepared by using the means of oxidizing reaction and ultrasonic treatment, the carboxy content of nanocellulose could be up to 0.58 mmol/g.
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