铁盐对低密度聚乙烯光降解双重作用的研究  

Study of Double Effect of Ferric Salt on Photodegradation of LDPE Film

作　　者：林宝凤[1] 李磊[1] 梁兴泉[1] 李克文[1] 

机构地区：[1]广西大学化学化工学院

出　　处：《塑料科技》2007年第11期66-69,共4页Plastics Science and Technology

基　　金：广西科技厅攻关项目(0322001-6;0330002-1);广西科技厅基金项目(0639005)

摘　　要：测定了铁盐/低密度聚乙烯(LDPE)薄膜的断裂伸长率保留率、表面结构、分子量和凝胶量,研究了不同添加量的铁盐对LDPE光降解的促进和抑制的双重作用。结果表明:铁盐添加量为0.1%时,对LDPE的光降解有促进作用,光照70天LDPE的黏均分子量从3.6×104下降到0.5×104;铁盐含量大于1%时,对LDPE光降解产生抑制作用。The photodegradation of LDPE films with different contents of ferric salt was evaluated by measuring the reserved elongation at break,surface structure,molecular weight and gel content.The results indicate：while the content of ferric salt is 0.1%,it promotes the photodegradation of LDPE,after irradiated 70 days,the molecular weight of LDPE decreases from 3.6×10^4 to 0.5×10^4.When the content of ferric salt is greater than 1%,it restrains the photogradation of LDPE.

关 键 词：铁盐 低密度聚乙烯 光降解 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]