浸涂法荷电微孔滤膜基本结构及性能研究  

Study on structure and performance of the charge-modified microporous membrane by coating process

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国家生物防护装备工程技术研究中心,天津300161 [2]天津大学化工学院,天津300072

出　　处：《膜科学与技术》2006年第5期105-108,共4页Membrane Science and Technology

摘　　要：论述了浸涂法荷正电微孔滤膜的基本结构及性能．电镜照片及孔径分布曲线显示,浸涂工艺不会改变膜的微孔结构,膜的孔径分布也非常均匀,但孔径尺寸减小,变化率小于10％．与基膜相比,荷电膜的外形尺寸、透水率及孔隙率减小,泡点压力及拉伸强度增加,而且具有明显的正电性能及吸附分离性能．Structure and performance of the positively charge- modified microporous membrane prepared by coating process were introduced. The charged agent was chitosan. The substrate microporous membrane was cellulose esters membrane. The pore size of the charged membrane distributions became narrow. The pore size, external dimension, water flux and porosity decreased. The bubble point and tensile strength increased. The coating process didn＇t change the charged membrane structure, but could increase greatly its electrical property and adsorption.

关 键 词：荷电膜 浸涂法 流动电位 

分 类 号：TQ050.4[化学工程]