^(60)Co γ射线辐照对聚乙烯薄膜降解性能的影响  

Effect of ^(60)Co γ Ray Radiation on Degradability of Polyethylene Films

作　　者：李澧[1] 朱佳廷[1] 冯敏[1] 顾贵强[1] 杨萍[1] 王德宁[1] 

机构地区：[1]江苏省农业科学院原子能农业利用研究所,江苏南京210014

出　　处：《核农学报》2013年第9期1366-1370,共5页Journal of Nuclear Agricultural Sciences

基　　金：江苏省农业科技自主创新资金项目(CX(12)3031)

摘　　要：本研究以聚乙烯薄膜为研究对象,60Co辐照装置为辐照源,辐照剂量分别为0、10、50、100kGy,60Co γ射线辐照对聚乙烯薄膜降解性能影响的研究结果表明,60Co γ射线辐照聚乙烯薄膜能有效的增加薄膜表面的亲水性,降低力学性能。当60Co γ射线辐照剂量达到100kGy时,聚乙烯薄膜表面出现大量裂纹,纯水接触角为44°,有利于微生物吸附。60Co γ射线辐照法是一种能够有效促进聚乙烯薄膜降解的方法。The degradability of polyethylene films were performed under absorbed doses of 0, 10, 50, 100kGy by 60Co γ ray. The radiated polyethylene films were investigated by FT-IR spectrum, water contact angle, SEM images and tensile strength. The results showed that the radiated polyethylene films exhibit more hydrophilic and less mechanical properties. When 60Co γ-ray irradiation dose reached 100 kGy, large of crack was observed in the polyethylene films surface and the water contact angle rose up to 44°, which was available for microbe adsorption. Thus, the method of 60Co γ-ray irradiation is an effective way for degradation of polyethylene films.

关 键 词：聚乙烯薄膜 辐照 降解 亲水 

分 类 号：TQ320.1[化学工程—合成树脂塑料工业]