SELECTIVE SEPARATION MEMBRANE WITH INHIBITED ELECTROSTATIC GENERATION

PROBLEM TO BE SOLVED: To effectively inhibit the generation of static electricity which is obstructive in the assembling of a module and the manufacture of a selective separation membrane module by immerse a membrane in an aqueous glycerine solution and sticking the glycorine to the surface of the membrane. SOLUTION: Glycerine is made to adhere to the surface the selective separation membrane. In this case, the coating adhesion amount of the glycerine is 5-30 wt.% per 100 wt.% selective separating membrane. In addition, the selective separation membrane is hydrophobic and the glycerine is imparted to the surface of the membrane by immerse the spun and formed selective separating membrane into an aqueous glycerine solution and drying it. The concentration of the aqueous glycerine solution to be used is 1.5-5 wt.%. Further, the selective separation membrane is loaded into a selective separation membrane module and the use of the selective separating membrane is not particularly restricted as long as it is used for separating the liquid and gas in various kinds of fields. Normally, however, the membrane is formed of either of a hydrophobic or a hydrophilic polymer, or of both of these polymers.