摘要
测定降解前、后壳聚糖的分子质量,用0.1 mol.L-1乙酸-0.2 mol.L-1氯化钠溶液做溶剂,采用黏度法进行测定。测得未降解壳聚糖[η]为407.6,分子质量约为5.7×105,降解180 min壳聚糖[η]为26.0,分子质量约为2.9×104。采用黏度法测定壳聚糖的分子质量具有原料处理简单,仪器易于清洗,实验数据重现性好等特点。
The molecular weight of chitosan was measured before and after degradation, with 0.1 mol· L^-1 acetic acid, 0.2 mol·L^-1 sodium chloride solution as solvent, using viscometry. Results showed that the [ ] of ehitosan was 407.6, the molecular weight was 5.7 × 10^5 , the [η] of chitosan degraded 180 min was 26, and the molecular weight was 2.9 × 10^4. The viscometry applied for determining molecular weight of chitosan has characteristic of simple disposal of the material, easy washing of the apparatus, and its good reappearance of the experiment data.
出处
《化纤与纺织技术》
2010年第1期43-46,共4页
Chemical Fiber & Textile Technology
关键词
壳聚糖
降解
分子质量
影响因素
chitosan, degradation, molecular weight, influencing factors
