西南林业大学学报Issue(2)：100-103,4.DOI:10.3969/j.issn.2095-1914.2014.02.019
炭基磷钨酸催化制备纳米纤维素的研究
Preparation and Characterization of Nanocrystalline Cellulose Catalyzed by Carbon-Based Phosphotungstic Acid
摘要
Abstract
Nanocrystalline cellulose (NCC)was prepared by ultrasonic-assisted hydrolysis of microcrystal-line cellulose (MCC ) with carbon-based phosphotungstic acid as the catalyst.The morphological,crystal structure,spectrum properties and thermal stability properties of NCC were respectively analyzed by transmis-sion electron microscopy (TEM),X-ray diffraction (XRD ),Fourier transformation infrared spectroscopy (FTIR),and thermographic analyzer (TGA).The results indicated that NCC was rod-like with diameter ran-ging around 10 -100 nm and length ranging between 200 -800 nm.The XRD pattern showed that the NCC still kept with the typeⅠcellulose structure,and its crystallinity was 76 .1%.The FTIR analysis showed that NCC was still with the basic chemical structure of cellulose.The results of TGA analysis demonstrated that the thermal decomposition temperature of NCC was 300℃,whose primary thermal stability of NCC was lower than that of MCC.Compared with the conventional acid hydrolysis,the new preparation approach of NCC could a-void the acid removing process,and it possessed the advantages of low corrosion to equipments,and less pollu-tion to the environment and the like.关键词
炭基磷钨酸/微晶纤维素/纳米纤维素晶体/水解Key words
carbon-based Phosphotungstic acid/microcrystalline cellulose/crystal of nanocrystalline cellu-lose/hydrolysis分类
农业科技引用本文复制引用
游惠娟,曾常伟,卢麒麟,唐丽荣,吴耿烽,黄彪..炭基磷钨酸催化制备纳米纤维素的研究[J].西南林业大学学报,2014,(2):100-103,4.基金项目
国家自然科学基金项目（31170520，31370560）资助；福建省科技计划项目（2013H0004）资助。 （）
