中文摘要：

以界面聚合法在支撑液膜的支撑体基膜表面形成一层亲水层,研究了界面聚合改性过程及水相单体结构对复合支撑液膜渗透性和稳定性的影响,以膜表面zeta电位、接触角、透油速率和液膜萃取过程传质通量衰减率对复合膜性能加以表征。结果显示,界面聚合时先浸水相再浸油相,膜表面的荷负电性强,有利于金属阳离子（以Ni（Ⅱ）为代表）的传输。支撑液膜萃取镍（Ⅱ）结果显示,原膜传质通量在30h内由358.2mg/（m^2·h）降为0,而赖氨酸分子因具有强亲水基团羧基且脂肪链的引入会增加聚合物大分子的柔曲度,以其制备的复合液膜支撑体表面具有较好的亲水性,对液膜相的锁闭能力较强,Ni（Ⅱ）的传质通量在30h内仅衰减28.3%,有利于增强支撑液膜在长期运行中的稳定性。

英文摘要：

This study prepared composite supported liquid membranes（CSLMs）by forming a hydrophilic layer on the surface of hydrophobic hollow fiber by interfacial polymerization（IP）method.The influence of IP process and the structures of monomers on stability of the CSLMs was studied.The basic properties of the composite membranes were characterized by zeta potential,contact angle,oil permeation rate,as well as the attenuation of mass transfer flux of the SLM process.The results showed that the negative charge on membrane surface and the mass transfer flux of positively charged metal ion（represented by Ni（Ⅱ））increased when the immersion order is aqueous followed by oil.In SLM extraction experiments,the mass transfer flux of the unmodified SLMs decreased from 358.2mg/（m^2·h）to 0within 30 h.Because of the strong hydrophilic carboxyle and soft chain of lysine,the CSLMs prepared by coating lysine on the support has a better hydrophilicity and,a better result in locking oil phase.Accordingly,the mass transfer flux reduced only 28.3% within 30 h.Therefore,composite membrane prepared by lysine has potential advantage in enhancing the stability of supported liquid membranes in long-term processes.