浸渍-界面聚合法制备荷电镶嵌膜  

Preparation of the Composite Charged Mosaic Membrane by Coating-Interfacial Polymerization Method

作　　者：张景亚[1] 张浩勤[1] 谭翎燕[1] 乔欢欢[1] 刘金盾[1] 

机构地区：[1]郑州大学化学工程学院,河南郑州450001

出　　处：《高校化学工程学报》2008年第6期1020-1025,共6页Journal of Chemical Engineering of Chinese Universities

基　　金：国家自然科学基金(20676125);河南省自然科学基金(2007320072)

摘　　要：以聚醚砜为基膜,以荷正电的高分子材料聚环氧氯丙烷胺及荷负电的2,5-二胺基苯磺酸混合水溶液(无机相)与三酰氯的正己烷溶液(有机相)通过浸渍-界面聚合反应,合成了一种新型的荷电镶嵌膜。实验考察了荷电剂浓度、单体的浓度、界面聚合反应时间和热处理温度等因素对膜性能的影响。研究结果表明,优化工艺下所制备的荷电镶嵌膜具有良好的性能。在0.4MPa下,膜对无机盐的截留率均低于40%,对PEG1000的截留率则达到了94.02%,该膜的纯水通量为11.1L·m-2·h-1;能截留低分子量有机物而透过盐,表明该膜可以用于有机物与盐混合溶液的分离。A new type of charged mosaic membrane （CMM） was prepared by using the coating-interfacial polymerization techniques with using aqueous solution of poly（epichlorohydrin-amine） （PECH-amine） and 2,5-diaminobenzene sulphonic acid （DIA） mixture as inorganic phase and the solution of trimesoyl chloride （TMC） solved in hexane as the organic phase to deposit a thin film composite （TFC） onto a PES ultrafiltration membrane which was used as the porous support. The influences of several factors, such as the charged agents concentrations, monomer concentration, interfacial polymerization （IP） time and heat treatment temperature, on the performance of the prepared composite membrane were studied. The results show that, under the optimal preparation conditions, the charged mosaic membrane prepared has a good performance. Under a pressure drop of 0.4 MPa, the water flux of the prepared membrane is 11.1L·m^-2·h^-1, and the retentions of various salts by the prepared membrane are less than 40%, while the retention of polyethylene glycol 1000 （PEG 1000） is up to 94.02%. Since the prepared mosaic membrane allows the salts but not the low-molecular-weight organics to permeate, it can be used to separate the solution of organics and salts mixture.

关 键 词：荷电镶嵌膜 界面聚合 浸渍法 聚环氧氯丙烷胺 复合膜 

分 类 号：TB383[一般工业技术—材料科学与工程] TQ425.236[化学工程]