聚乳酸/海藻酸钠共混膜的制备及性能研究  

Preparation and Properties Research of Poly(lactic acid)/Sodium Alginate Film

作　　者：贾军芳[1] 崔莉[1] 

机构地区：[1]武汉纺织大学化学与化工学院,湖北武汉430073

出　　处：《武汉纺织大学学报》2012年第3期43-46,共4页Journal of Wuhan Textile University

基　　金：湖北省教育厅中青年项目(Q20111609)

摘　　要：本文以聚乳酸(PLA)和海藻酸钠(SA)为原料,采用流延成膜法制备了PLA/SA共混膜,并研究了PLA/SA共混膜的吸湿、力学性能及热学性能。结果表明:PLA与SA分子之间存在着较强的氢键作用力;SA的引入,提高了共混膜的结晶性能;共混膜的吸湿率随共混膜中SA含量的增加而增加;力学性能随SA含量的增加而减少。In this paper,poly（lactic acid） and sodium alginate were chosen as raw material,PLA/SA blend film was prepared by casting method.The moisture absorption,mechanical and thermal properties of PLA/SA blend films were investigated.It was found that there is strong hydrogen bonding effect between PLA and SA molecules.Addition of SA in PLA improved the crystallization property of PLA/SA films.Moisture absorption and mechanical properties of PLA/SA films increased and reduced with the SA content increasing,respectively.

关 键 词：海藻酸钠 聚乳酸 力学性质 亲水性 

分 类 号：TB324[一般工业技术—材料科学与工程]