| abstract |
An object of the present invention is to provide a method for producing a porous hollow fiber membrane whose surface is uniformly modified in the yarn length direction by a grafting method, and is excellent in water wettability, protein non-adsorption property, etc. And a method for producing a porous hollow fiber membrane. In a method for producing a graft hollow fiber membrane in which a porous hollow fiber membrane having a reaction start point is immersed in a reaction solution containing a reactive monomer and the reactive monomer is grafted, a porous hollow fiber membrane is formed in the reaction vessel. A method for producing a graft hollow fiber membrane, in which a reaction liquid is simultaneously introduced into the hollow portion from both ends of the hollow fiber membrane while the yarn membrane is placed horizontally and the inside of the reaction vessel is decompressed. [Selection figure] None |