文档介绍：稻草芦苇及其浆料制备羧***纤维素的比较*
戴歆,薛也,彭卫惠,刘祝兰,任浩
(,江苏南京 210037)
摘要:本文研究了直接由草粉或浆料制备羧***纤维素钠的溶剂适应性,并对产品的结构、粘度、取代度做了分析。结果表明,***做溶剂时羧***纤维素合成的得率最高、取代度最大。草粉和草浆在***溶剂中经过一次反应得到的羧***。红外光谱表明,从草粉和从浆料制得的羧***纤维素样品结构上没有明显差别。以不同程度预处理的草粉为原料,-***纤维素产品。
关键词:稻草;芦苇;浆料;羧***纤维素
中图分类号:TQ26 文献标识码:B
Synthesis and Characterization of Carboxymethylated Cellulose from Rice Straw and Reed
DAI Xin,XUE Ye,PENG WeiHui, Liu Zhulan, REN Hao
(1. College of Pulp and Paper Making,NanJing Forestry University,NanJing 210037,China)
Abstract: This study was focused on synthesis and characterization of carboxymethylated cellulose from rice straw and reed. Carboxymethylated was synthesized directly from straw mills or straw pulps, the yields, viscosity, degree of substitution (DS), and FT-IR absorptions pared respectively. Results showed that either straw mills or straw pulps are available for using as raw materials. Acetone showed the best accessibility in the reaction process, the yields, DS, viscosity of the products which were got from acetone had the best characteristics. The DS can reach both for straw mills and straw pulps starting materials. There was no significant difference on FT-IR measured structure between carboxymethylated celluloses from mills or pulps. In addition, changing the pretreatment degree of raw materials, the DS of products can be changed from