Position: Home > Articles > Preparation of carboxylated cellulose nanocrystals by direct oxidative degradation of borers powder
Journal of Fujian Agriculture and Forestry University(Natural Science Edition)
2014,43
(5)
101-104
蛀粉直接氧化降解制备纤维素纳米晶体的表征
作 者：
胡阳;卢麒麟;唐丽荣;游惠娟;陈燕丹;陈学榕;黄彪
单 位：
福建农林大学材料工程学院;福建农林大学金山学院
关键词：
虫蛀蛀粉;过硫酸铵;羧基化纳米纤维素晶体;氧化降解
摘 要：
以毛竹蛀粉为原料,采用过硫酸铵在超声波辅助作用下直接氧化降解制备了羧基化的纳米纤维素晶体(CCN).采用扫描电子显微镜、透射电子显微镜、傅利叶红外光谱仪(FTIR)和X射线衍射仪(XRD)对蛀粉及所制备的CCN的微观形貌、谱学性能及晶型结构进行了表征分析.结果表明,蛀粉颗粒呈撕裂状,形状不规则,尺寸为10-50μm;所制备的CCN为球形,粒径约为10-30 nm.FTIR分析结果表明CCN具有纤维素的基本化学结构,在1731 cm-1附近出现了羧基的C=O特征峰.XRD图谱表明制备的CCN属于纤维素Ⅰ型,结晶度为55.75%.
译 名：
Preparation of carboxylated cellulose nanocrystals by direct oxidative degradation of borers powder
作 者：
HU Yang;LU Qi-lin;TANG Li-rong;YOU Hui-juan;CHEN Yan-dan;CHEN Xue-rong;HUANG Biao;College of Material Engineering,Fujian Agriculture and Forestry University;Jinshan College,Fujian Agriculture and Forestry University;
关键词：
borers powder;;ammonium persulfate;;carboxylated cellulose nanocrystals;;oxidative degradation
摘 要：
Under ultrasonic-assisted condition,carboxylated cellulose nanocrystals( CCN) were prepared with ammonium persulfate by direct oxidative degradation of borers powder from moso bamboo. The microstructure,morphology and spectrum properties,the crystal structure of borer powder and CCN were characterized by scanning electron microscopy,transmission electron microscopy,fourier transform infrared spectrometry and X-ray diffraction. The results indicated that the borers powder was tore irregularly and the size was 10- 50 μm,while the prepared CCN was spherical,and the size was about 10- 30 nm. The results of FTIR analysis showed that CCN retained the basic chemical structure of cellulose and a strong carbonyl C = O peak appeared at 1731 cm- 1due to the presence of carboxylic acid groups. The XRD spectra showed that the CCN had crystalline cellulose Ⅰ structure and the crystallinity was 55.75%.
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