辐照改性对聚己内酯的影响  

Effect of Irradiation Modification on PCL

作　　者：李平 赵锐胜 彭斌 高博文 

机构地区：[1]成都华鹰科技有限公司,四川成都610041

出　　处：《塑料》2006年第4期21-23,共3页Plastics

基　　金：2004年度四川省科技攻关课题"新型完全生物降解材料的研制"(03GG009-004)。

摘　　要：研究了不同填料对聚己内酯（PCL）力学性能的影响,以及在不同气氛下,射线辐照剂量对其分子量大小、交联密度,高温模量以及生物降解性的影响.结果表明,可溶性淀粉是PCL较为理想的填充剂,它的加入对PCL力学性能的影响较小;经Co60-γ射线辐照后,可提高PCL的分子量、交联密度、高温模量,降低生物降解性.30～90kGy的辐照剂量即可赋予材料满意的加工性和较好的生物降解性.The effects of various fillers on the mechanical property of polycaprolactone（ PCL）, and effects of dosage of Co^60-γ rays on molecular weight, crosslinking density, modulus at high temperature and biodegradability were investigated. The results show that soluble starch was a good filler for PCL. It had little negative effect on PCL. Molecular weight,crosslinking density and modulus increased at high temperature,and the biodegradability reduced after irradiation by Co^60-γ rays. The dosage of irradiation from 30 to 90 kGy was preferable to both processability and biodegradability.

关 键 词：辐照 聚己内酯 生物降解性 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]