沙柳皮基微晶纤维素的制备及其性能表征  

Preparation and characterization of microcrystalline cellulose from Salix psammophila bark

作　　者：盛卫 董伊航 周宁[1] 张克勤[1] 

机构地区：[1]苏州大学现代丝绸国家工程实验室,江苏苏州215123 [2]苏州贝彩纳米科技有限公司,江苏苏州215123

出　　处：《纺织学报》2016年第6期7-12,共6页Journal of Textile Research

摘　　要：为开发利用沙柳资源,减少环境污染,以沙柳皮为原料,采用化学处理方法提取分离出纤维素,并制备了微晶纤维素。通过扫描电子显微镜（SEM）和X射线衍射等手段对其形貌和结构进行表征,使用显微镜对微晶纤维素的粒径进行分析。结果表明,通过逐步处理,半纤维素和木质素被去除,纤维素结晶度提高,制备得到棒状结构的微晶纤维素,聚合度为185.7,微晶纤维素长度主要分布在20-60μm之间,平均长度为（46±15）μm,平均直径为（10±3）μm。在一定程度上解决了沙柳资源浪费问题,同时为微晶纤维素来源又增添一新途径。To utilize the Salix pammophila resources and reduce environmental pollution,the Salix pammophila bark was used as raw material. The cellulose was extracted and separated by chemical treatment methods,and pure microcrystalline cellulose was obtained. During the study,the morphology and crystal structure of the microcrystalline cellulose were characterized by means of scanning electron microscopy（ SEM）,X-ray diffraction（ XRD） and other measurements. Moreover,the particle size of microcrystalline cellulose was analyzed using a microscope. The results demonstrate that,hemicellulose and lignin are removed gradually by stepped treatment,and the crystallinity of cellulose increases. The microcrystalline cellulose shows a rod-like shape,degree of polymerization of 185. 7,and about 85% of the length is of 20- 60 μm. Average length of the Salix psammophila microcrystalline cellulose is（ 46 ±15） μm with an average diameter of（ 10 ± 3） μm. The study provides a new approach to obtaining microcrystalline cellulose as well as a solution to the problem of the waste of the resources of Salix psammophila.

关 键 词：沙柳皮 微晶纤维素 粒径 结晶度 

分 类 号：TQ352.4[化学工程]