淀粉基热塑性生物降解塑料的研制  

Study of Starch based Thermoplastic Biodegradable Plastics

作　　者：吴俊[1] 谢笔钧[1] 

机构地区：[1]华中农业大学食品科技系,湖北武汉430070

出　　处：《精细化工》2001年第7期423-425,共3页Fine Chemicals

摘　　要：以干法改性淀粉为主要原料 ,通过由V (甘油 )∶V (乙二醇 ) =1∶2组成的复合增塑剂的增塑 ,添加增强剂PX和增溶剂EAA ,共混后可研制出淀粉基热塑性生物降解塑料。研究表明 ,该塑料中w (改性淀粉 ) =5 0 %～ 70 % ,其他添加成分也均可生物降解 ,具有良好的机械性能。生物降解实验显示其在 90d后降解率达 5 0Biodegradable plastic was prepared with dry-process modified starch, the reinforcer PX and solubilizing agent EAA. The modified starch was plasticized by compound plasticizer [V(glycerol) : V(ethylene glycol) = 1:2]. The result shows that the amount of starch in the plastic can reach 50% [similar to] 70%, and other ingredients are all biodegradable. It has excellent mechanical property, and its biodegradation ratio can exceed 50% in the soil after 90 days.

关 键 词：干法 改性淀粉 热塑性 生物降解塑料 淀粉基 

分 类 号：TQ324.9[化学工程—合成树脂塑料工业]