壳聚糖-聚酰胺荷正电微孔滤膜的制备  

Preparation of chitosan-polyamide positively charge modified microporous membrane

作　　者：朱孟府[1] 龚承元[1] 苏建勇[1] 王世昌[2] 

机构地区：[1]军事医学科学院卫生装备研究所,天津300161 [2]天津大学化工学院,天津300072

出　　处：《军事医学科学院院刊》2006年第4期348-350,共3页Bulletin of the Academy of Military Medical Sciences

摘　　要：目的：制备一种带正电荷的壳聚糖-聚酰胺微孔滤膜。方法：以壳聚糖、聚酰胺为成膜材料，甲酸为溶剂，采用相转化工艺制备荷电微孔滤膜，并通过扫描电镜照片、流动电位及颜料吸附容量评价膜的结构及性能。结果：铸膜液的组成及成膜工艺决定着膜的结构和性能，通过改变铸膜液组成及工艺条件，制备出孔径为0．2～0．8μm、孔隙率约80％的荷正电微孔滤膜，膜的达旦黄吸附容量大于220μg／cm^3。结论：壳聚糖是一种很好的荷正电微孔滤膜的成膜材料，所制备的荷电微孔滤膜可用于细菌病毒的分离、浓缩。Objective： To prepare a chitosan-polyamide microporous membrane with positive charges. Methods： The charge modified microporous membrane was prepared by phase inversion process using chitosan and polyamide as membrane-making materials, and formic acid as solvent. The structure and performance of the membrane were evaluated with SEM photographs, streaming potential and dye adsorption capacity. Results： The casting solution composition and casting process affected the structure and performance of the membrane. The positive charge modified membrane with pore diameter 0.2 to 0.8 μm and porosity about 80% was prepared by modified technology. Its adsorption capacity for titan yellow exceeded 220 μg/cm^3. Conclusion：Chitosan is a good membrane-making material for the positive charge modified microporous membrane, and the membrane can be used for removing and concentrating bacteria and virus.

关 键 词：壳聚糖 荷电膜 聚酰胺 流动电位 吸附 

分 类 号：TQ050.4[化学工程]