【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。更多还原

【Abstract】 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 60 Co γ-ray irradiation is an effective way for degradation of polyethylene films.更多还原