正交试验法研究淀粉-壳聚糖可食性包装膜的力学性能  

Study on Mechanical Properties of Starch-chitosan Edible Packaging Film

作　　者：方健[1] 卢虹[1] 方艳平[1] 符克丽[1] 

机构地区：[1]北京林业大学,北京100083

出　　处：《包装工程》2009年第11期1-3,22,共4页Packaging Engineering

基　　金：北京市教育委员会共建项目专项资助(木质复合材料制造及其应用研究)

摘　　要：采用溶液共混后流延的方法制备淀粉-壳聚糖可食性包装膜,运用正交试验法研究了壳聚糖质量分数、乙酸体积分数、淀粉质量分数、共混时间、甘油比例等因素对包装膜力学性能的影响。根据正交试验结果,壳聚糖质量分数、乙酸体积分数、甘油比例对包装膜的抗张强度和伸长率影响最为显著。当壳聚糖质量分数2%,乙酸体积分数6%,淀粉质量分数2%,共混时间10min,甘油质量比例35%时,共混膜的力学性能相对最优。Starch-chitosan edible packaging films were prepared by solution and tape casting method. Mechanical properties of EPF were studied with orthogonal test method and the influence of chitosan con centration, acetic acid concentration, starch eoncentration, blending time, and glycerine proportion on the mechanical properties of the film was analyzed. The results showed that chistosan concentration, acetic acid concentration, and glycerine proportion were the important factors for the tensile strength and elonga- tion of EPF. The optimized condition was chitosan concentration 2 %, acetic acid concentration 6 %, starch concentration 2 %, blending time 10 min, and glycerine proportion 35%.

关 键 词：正交试验法 淀粉 壳聚糖 可食性包装膜 力学性能 

分 类 号：TB484.3[一般工业技术—包装工程] TB487