辐照与化学相结合协同降解壳聚糖研究  

DEGRADATION OF CHITOSAN BY SYNERGETIC TREATMENT OF IRRADIATION AND CHEMICAL

作　　者：赵军旗[1] 邓钢桥[1] 邵赛[2] 李文革[2] 邹朝晖[2] 彭玲[2] 罗志平[2] 

机构地区：[1]湖南农业大学,湖南长沙410128 [2]湖南省原子能农业应用研究所,湖南长沙410125

出　　处：《核农学报》2008年第3期310-313,285,共5页Journal of Nuclear Agricultural Sciences

基　　金：湖南省农业科学院重点学科资助项目(湘农科科2005-8)

摘　　要：研究了单一辐照和协同处理对壳聚糖降解的影响。在协同降解中研究了辐照剂量、H2O2浓度、溶剂/溶质体积质量比、乙酸4个因素的作用。对前3个因素进行了方差分析和不同水平的多重比较,同时对降解产物的结构进行了红外光谱分析。结果表明协同降解效果较好,即15%H2O2、1.5%HAc、H2O2溶液/壳聚糖体积质量比4∶1、辐照剂量为110kGy可以使壳聚糖的分子量从8.7×105降低到104以下,且结构没有明显变化。The degradation of solid state chitosan by irradiation at solid state and synergetic method were investigated in this paper. Four factors which affect the degradation effect of chitosan： irradiation, H2O2concentration, the ratio of solvent and solute （volum/ weight）, acetic acid were analyzed. The first three were measured by multiple comparisons of the different level and variance analysis, and infrared spectroscopy was employed to analyze check the degradation products. It is concluded that chitosan＇ s viscosity, and average molecular weight was decreased from 8.7 × 10^5 to 10^4 at the condition of 15%H2O2 ,HAc1.5%, 4：1 H2O2 solution/chitosan, 110kGy irradiation, and the chemical structure of treat chitosan products was almost no changed.

关 键 词：壳聚糖 辐照 H2O2 协同降解 

分 类 号：O636.1[理学—高分子化学]