ENZYME IMMOBILIZATION IN AN ASYMMETRIC CHARGED MEMBRANE

被引：22

作者：

YOKOYAMA, Y

TANIOKA, A

MIYASAKA, K

机构：

[1] Department of Textile and Polymeric Materials, Meguroku, Tokyo Institute of Technology, Tokyo 152, Japan

来源：

JOURNAL OF MEMBRANE SCIENCE | 1988年 / 38卷 / 03期

关键词：

Catalysts - Enzymes--Immobilization - Mass Transfer--Mathematical Models - Membranes--Electric Field Effects - Urea--Hydrolysis;

D O I：

10.1016/S0376-7388(00)82421-7

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

An entrapped enzyme asymmetric membrane was prepared by treatment of a porous polypropylene or polyethylene film by plasma-induced graft polymerization of acrylic acid on one side and N-(2-methacryloyloxyethyl)-N,N,N-trimethylammonium chloride on the other, followed by enzyme absorption through the pores of the film. Such a single membrane is called an immobilized-enzyme bipolar membrane. In this system, the reaction of urea with urease is studied. Using Donnan equilibrium and electroneutrality conditions for 1-2-valent ions, the permeation behavior of the system is interpreted. Although this model is unsuitable for use when a current is flowing, it provides insight into membrane design because it depends on structural parameters such as fixed charge density in the equations rather than on nonequilibrium thermodynamic theory. This type of membrane is applicable for use in reaction-separation systems as a compact membrane reactor.

引用

页码：223 / 236

页数：14