| 摘要 |
PROBLEM TO BE SOLVED: To provide a permeable membrane having high separation performance, a production method of a permeable membrane and a separation method of salt.SOLUTION: A permeable membrane is provided with a porous body and a polymer brush layer formed at least on the surface of the porous body. The graft density of the polymer brush of the polymer brush layer is 0.1 chains/nmor more and 2 chains/nmor less. The polymer brush is formed by living polymerization. In the permeable membrane, it is preferable that the number average molecular weight (M) of the polymer of the polymer brush is 5,000 or more and 1,000,000 or less and the molecular weight distribution (weight average molecular weight (M)/number average molecular weight (M)) of the polymer of the polymer brush is 1.0 or more and 2.0 or less. |
