LLDPE/淀粉共混体系的生物降解特性  

Biodegradability of LLDPE/Starch Blend

作　　者：李晓[1] 袁惠根[2] 孟琴[2] 

机构地区：[1]福州大学化工系,福州350002 [2]浙江大学化工系,杭州310027

出　　处：《塑料工业》1999年第6期28-30,共3页China Plastics Industry

摘　　要：介绍生物降解性检测的土埋法和微生物生长法，研究了ＬＬＤＰＥ／ 淀粉生物降解塑料的生物降解性能。结果表明，当淀粉含量比２０ ％ ～４０ ％ 时，材料降解十分明显，加入玉米油，当加入量为淀粉含量的２ ％ 时，可使伸长率降低明显加快。由微生物生长法可证实ＬＬＤＰＥ／ 淀粉不但可以直接作为碳源供微生物利用，并能为微生物的次生代谢物葡萄糖所腐蚀。s Soil burial and microbial growth were used to determine the biodegradability of LLDPE/starch blend.The result showed when the content ratio of starch was 20%～40%,the degradation of the blend was obvious;when the content of corn oil was 2% of the content of starch,the decrease of the elongation of the blend was notable.It was confirmed by microbial growth that LLDE/starch blend could be a carbon source for microbial,and be eroded by the secondary metabolite of microbial.

关 键 词：淀粉 降解塑料 生物降解性 共混 聚乙烯 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]