壳聚糖辐射效应的研究（Ⅰ）──辐照剂量与分子量的关系及辐射裂解的G（S）值  

Studies on Radiation Effects of Chitosan (Ⅰ) Relationship Between Molecular Weight and Radiation Dose and the Determination of Chain Scission Yields

作　　者：赵文伟[1] 于黎[1] 钟晓光[1] 张月芳[1] 孙家珍[1] 

机构地区：[1]中国科学院长春应用化学研究所

出　　处：《功能高分子学报》1994年第1期42-46,共5页Journal of Functional Polymers

摘　　要：通过粘度的测量，考察了壳聚糖在不同条件下经不同剂量γ射线辐照所引起的分子量的变化，并分别计算了真空和空气中壳聚糖辐射裂解的Ｇ（Ｓ）值。Chitosan,which is a new functional biopolymer of high potential appoications in various fields,was irradiated under vacuum and in air. The changes of molecular weight have been studied with viscosity measurements. The results show that degradation is the main reaction of chitosan on irradiation, and the presence of oxygen can enhance the chain scission reaction, The G(S)values of chain scission under vacuum and in air were calculated to be 0.58 and 0.80 respectively.

关 键 词：壳聚糖 辐射裂解 粘度 分子量 

分 类 号：O636.1[理学—高分子化学]