液晶化载体促进传递膜的研究  

Study on facilitated transport membrane with liquid crystalline carriers

作　　者：金美芳[1] 王俊九[1] 周谨[2] 杨丹[2] 贺高红[2] 张卫[1] 虞星炬[1] 

机构地区：[1]中国科学院大连化学物理研究所海洋生物技术工程组,大连116023 [2]大连理工大学化工系,大连116012

出　　处：《膜科学与技术》2003年第3期5-10,共6页Membrane Science and Technology

基　　金：国家自然科学基金资助项目 (2 9876 0 39)

摘　　要：合成了两种侧链液晶高分子 (PSC -Ⅱ ) ,得到具有冠醚和液晶的双重功能的载体 .用核磁共振光谱 (1HNMR)和红外光谱 (IR)证实了它们的结构 .示差扫描热分析 (DSC)实验证明了它们都具有热致液晶性 .用聚丙烯膜 (Celgard 2 4 0 0 )作支撑体 ,侧链液晶高分子作载体 ,采用不同的制膜方法 ,研究了Na+ 、K+ 离子选择性渗透通过膜的传递性能 .对实验结果进行了讨论 ,指出了选择合理的成膜方法对传递性能影响是主要因素 .Two kinds of side chain liquid crystalline polymers terminated with crown ether have been synthesized.The structure were characterized by 1H NMR,IR spectra.DSC experiments show that both are therm-liquid crystals.The transport rates of Na + and K + have been measured for various membranes with the same polypropylene membrane(Celgard 2400)as support,prepared with two different liquid crystalline carriers and the different methods for preparing membranes.Results have been discussed,and it has been suggested that the choice of proper methods for preparing membranes is important for the transport rate and different transport mechanism.It was shown the transport phenomenon in using chloroform as carrier solvent to immobilize carrier is diffrent from the common transport mechanism in supported liquid membrane.'Jumping'transport was demonstrated when liquid crystalline carrier was immobilized in membrane.

关 键 词：液晶化载体 传递膜 支撑液膜 侧链液晶高分子 冠醚 液晶 膜分离 

分 类 号：TQ028.8[化学工程]