摘要
以芦苇浆为原料,采用超声辅助硫酸水解法制备了纳米纤维素。在单因素实验的基础上,响应面法优化纳米纤维素制备工艺条件,结果表明最佳制备工艺条件为超声时间32 min,硫酸浓度52%,反应温度54℃,纳米纤维素得率最高(78.67%);通过傅里叶变换红外(FTIR)、X射线衍射和透射电子显微镜(TEM)对最佳工艺条件制备的纳米纤维素进行性能表征,分析表明最佳工艺条件制备的纳米纤维素聚集态结构为纤维素Ⅰ型,呈棒状。
Nanocrystalline cellulose （NCC） was prepared from reed pulp by the method of sulfuric acid hydrolysis with ultrasonic pretreatment. Based on the results of the single - factor experiment, the preparation condition of NCC was optimized via response surface methodology. The results show that the best conditions are 32 min of ultrasonic time, 52% of sulfuric acid concentration and 54~C of reaction temperature. Under these conditions, the yield of NCC was the highest （78.67%）. The NCC with optimized condition was characterized by using fourier transform infrared （FTIR） , X - ray diffraction and transmis- sion electron microscopy （ TEM）, and it is analyzed that the aggregation state structure of NCC with optimized condition was cellulose type I, which is rod -like morphology.
出处
《中国野生植物资源》
2013年第2期15-19,共5页
Chinese Wild Plant Resources
基金
中央高校基本科研业务费专项资金资助(DL11EB01)
国家自然科学基金资助项目(31070633)
人力资源和社会保障部留学回国人员科技活动择优资助项目(07041311401)
关键词
芦苇浆
纳米纤维素
超声化学处理
响应面法
形貌
reed pulp
nanocrystalline cellulose
chemical ultrasonic treatment
response surface methodology
morphology
