作　　者： (梁光芸）; (陈春涛）; (刘长生）; (孙东平）;

机构地区： 南京理工大学化工学院,江苏南京210094

出　　处： 《应用化工》 2017年第9期1761-1765,共5页

摘　　要： 通过生物复合的方法,在Acetobacter xylinum NUST4.2发酵培养基中加入芦荟多糖制备芦荟多糖/细菌纤维素改性复合膜,分别通过热干燥和冷冻干燥法制得改性膜薄膜和改性膜海绵状膜,并对它们作为医用敷料的相关物理性能如吸湿性、透湿性、孔隙率和拉伸性能进行测试。结果表明,改性不影响膜的孔隙率,而且海绵状改性膜的孔隙率较大;其吸湿性能也比较好,能够有效吸收伤口渗出液;同时也具有较高的水蒸气透过率,但作为敷料还需改善;而且抗拉性能要优于细菌纤维素,说明改性可以提高细菌纤维素的机械性能。 Aloe polysaccharide/bacterial cellulose composite membrane was prepared by adding aloe poly-saccharide in the culture medium of Acetobacter xylinum NUST 4. 2 through the method of biological re-combination. Aloe polysaccharide/bacterial cellulose film and aloe polysaccharide/bacterial cellulose foam were prepared by heat-drying and freeze-drying system,respectively. Furthermore, their physical proper-ties as wound dressings such as porosity,the moisture absorption,water vapor permeability and anti-tensile strength properties were tested. The results showed that the modification did not affect the porosity of membrane. What＇s more,the porosity of aloe polysaccharide/bacterial cellulose foam was excellent, and its moisture absorption performance was good enough to absorb wound exudate effectively. At the same time, it also owned high water vapor transmittance. But as a dressing,it still needs to be improved. Moreo-ver its tensile performance was superior to bacterial cellulose. It demonstrated that the modification could improve the mechanical properties of bacterial cellulose.

关 键 词： 细菌纤维素 芦荟多糖 复合膜 物理性能 医用敷料