Enzyme immobilization in a fluorine resin membrane

摘要

A fluorine resin membrane is made hydrophilic to a prescribed depth in the direction of thickness thereof to produce an asymmetrical membrane having a hydrophilic portion and a hydrophobic portion. An enzyme is immobilized in the hydrophilic portion of the membrane to obtain a membrane having a function of enzymatic reaction and a function of selective gas permeation. The hydrophilic portion is formed by causing a perfluoroalkyl surface active agent to penetrate the prescribed depth that is to be hydrophilic.