首页 | 本学科首页   官方微博 | 高级检索  
     

4-乙酰氨基-TEMPO氧化制备纳米纤维
引用本文:董凤霞,刘 文,陈雪峰,刘红峰.4-乙酰氨基-TEMPO氧化制备纳米纤维[J].中国造纸,2013,32(8):8-13.
作者姓名:董凤霞  刘 文  陈雪峰  刘红峰
作者单位:1. 中国制浆造纸研究院,北京,100102;制浆造纸国家工程实验室,北京,100102
2. 山东省轻工业设计院,山东济南,250014
摘    要:以棉浆为原料,采用4-乙酰氨基-TEMPO-NaCIO-NaBr氧化体系,在超声波协助的作用下制备纳米纤维.测定了氧化前后棉纤维纤维素的羧基含量和聚合度,采用光学显微镜和红外光谱(FTIR)对氧化棉纤维进行了表征,采用纳米粒度仪和扫描电子显微镜(SEM)对超声波处理的氧化棉纤维进行了表征.结果表明,在4-乙酰氨基-TEMPO-NaClO-NaBr氧化过程中,棉纤维纤维素的聚合度显著下降;该反应体系结合超声波可制得宽度约80nm、长度约400nm的纳米纤维;纳米纤维纤维素的羧基含量可达0.58 mmol/g.

关 键 词:纳米纤维  4-乙酰氨基-TEMPO  超声波  羧基含量

Preparation of Nanocellulose by Using 4-Acetamido-TEMPO Oxidizing System and Ultrasonic Treatment
DONG Feng-xia , LIU Wen , CHEN Xue-feng , LIU Hong-feng.Preparation of Nanocellulose by Using 4-Acetamido-TEMPO Oxidizing System and Ultrasonic Treatment[J].China Pulp & Paper,2013,32(8):8-13.
Authors:DONG Feng-xia  LIU Wen  CHEN Xue-feng  LIU Hong-feng
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.
Keywords:nanocellulose  4-acetamido-TEMPO  ultrasonic  carboxylate content
本文献已被 万方数据 等数据库收录!
点击此处可从《中国造纸》浏览原始摘要信息
点击此处可从《中国造纸》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号