甲基纤维素／聚酰胺可生物降解膜的制备及其性能

Preparation and Properties of Biodegradable Cellulose/Polyamide Films

以丙三醇为增塑剂,将甲基纤维素、聚酰胺与烷基烯酮二聚体反应后制备出甲基纤维素／聚酰胺复合膜。力学性能测试表明,聚酰胺、烷基烯酮二聚体能够明显改善纤维素复合膜的力学性能,尤其是湿态拉伸强度。生物降解性能测试显示,金黄色葡萄球菌和大肠杆菌均可在复合膜上生长,该膜具有一定的生物降解性,但是聚酰胺的添加使复合膜的生物降解性能下降。

A composite film was prepared through the reaction of methylcellulose, polyamide, and alkyl ketene dimmer. Glycerol was used as a plasticizer. The inclusion of polyamide and alkyl ketene dimmer improved the mechanical properties of methylcellulose, especially the wet tensile strength. Testing of biodegradation activity showed that both St. aureus and E. coli can grow on the composite film, which had some biodegrading abilities to the film. However, the biodegradation ability of the composite films reduced with increasing polyamide content.