沙柳纤维素纳米化及其结构测定

Nanostructures of Salix mongolica Cellulose and Structure Determination

摘要: 本文以沙柳枝条为原料，应用硫酸水解法制备了沙柳纳米纤维素，借助现代仪器分析手段分析了沙柳纳米纤维素的结构和性能。研究结果表明，经硫酸水解处理后，沙柳纤维素不再成纤维簇而是分散成许多纤维单丝，其分子链被打断，分解温度较处理前降低，化学成分基本保持不变，纳米纤维素晶体的结晶度较原纤维有一定程度的提高。

Abstract: The preparation process of nanocellulose was introduced in this paper using Salix branches by a method of sulfuric acid hydrolysis. And then the structure and characteristics of nanocellulose were detected with a series of modern analytic methods using advanced apparatus. The experimental results show that Salix mongolica cellulose was no longer fiber clusters but dispersed into many monofilaments after sulfuric acid hydrolysis. Its molecular chains were interrupted, the de-composition temperature was lower than before treatment, chemical composition remained bas-ically and the crystallinity increased.