可生物降解聚乳酸发泡材料研究进展  

Research Progress in Biodegradable Poly(lactic acid) Foams

作　　者：刘伟[1] 伍玉娇[1] 王福春[1] 何杰军[1] 周登凤[1] 

机构地区：[1]贵州理工学院材料与冶金工程学院,贵州贵阳550003

出　　处：《中国塑料》2015年第6期13-23,共11页China Plastics

基　　金：贵州省科技厅贵州理工学院联合基金(黔科合LH字[2014]7372号);高层次人才科研启动基金(XJGC20141103)

摘　　要：综述了聚乳酸(PLA)发泡材料在包装领域、汽车领域和生物医疗领域的多种应用现状,概括了釜压发泡法、连续挤出发泡法、注塑发泡法以及其他发泡成型法制备PLA发泡材料的成型机理及泡孔结构特点,重点介绍了分子链结构改性、共混改性和微米/纳米级填充改性等较为有效的PLA改性方法,以及各种改性方法所制备的PLA发泡材料的泡孔形态特征。The wide array of applications for PLA foams,such as packaging,automobiles,and tissue engineering,were introduced.And,various PLA foaming technologies,such as solid-state foaming,extrusion foaming,injection foaming,and other foaming methods,as well as their foaming mechanism,were also listed.Some advanced and effective modification methods,including chain branching of PLA molecular,blending with other polymers,and filling with micror/nano-size particles,were dealt with.And,the cellular structures induced by the modifications of PLA were also introduced.

关 键 词：聚乳酸 泡沫 生物降解 发泡技术 超临界二氧化碳 

分 类 号：TQ328[化学工程—合成树脂塑料工业]