玉米皮半纤维素/壳聚糖/甘油复合膜制备及性质研究

Preparation and Properties of Hemicellulose/Chitosan/Glycerol Composite Membrane from Corn Film

以玉米皮半纤维素、壳聚糖和甘油共混制备复合膜,研究了玉米皮半纤维素、壳聚糖和甘油添加量对复合膜力学性质的影响,考察了复合膜的结晶结构、表面形貌、热稳定性、抗菌性能、降解性能、热溶解性和透光性。结果表明,当玉米皮半纤维素浓度为2.4%,壳聚糖浓度为0.6%,甘油浓度为0.4%时,做出的复合膜具有较好的抗拉强度和断裂伸长率。X-射线分析表明,半纤维素结晶结构未发生实质性变化,SEM和热重分析表明,复合膜具有较好的表面特性和热稳定性,制得的复合膜对大肠菌群和金黄色葡萄球菌具有一定的抑菌效果,并且具有较好的降解性、热溶解性和透光性。

The composite membrane was jointly made by corn bran hemicellulose,chitosan and glycerinum.The effects of corn bran hemicellulose,chitosan and glycerinum on the mechanical property of composite membrane were researched.And the crystalline texture,surface topography,heat stability,mold resistance,degradation property,heat dissolution and light-admitting quality of composite membrane were researched.The results indicated that,when the concentration of corn bran hemicellulose was 2.4%,the concentration of chitosan was 0.6%and the concentration of glycerinum was 0.4%,the made composite membrane was with good strength of extension and elongation at break.X-ray analysis indicated that,the structure of hemicellulose crystalline texture was with no substantive change.SME and thermogravimetric analysis indicated that,the composite membrane was with good surface characteristics and heat stability,the made composite membrane was with a certain antibacterial effect to coliform and staphylococcus aureus,and the made composite membrane was with relatively good degradability,heat dissolution and light-admitting quality.