Pva porous membrane, method for manufacturing the same, and filtration filter having the pva porous membrane


【課題】本発明は、有機溶媒や水の透過性能が高く、10nm以下の径のナノ粒子の除去率が高いPVA多孔膜、その製造方法及びPVA多孔膜を有する濾過フィルターを提供することを課題とする。 【解決手段】網目状のPVAが薄膜状に集積され、一面側から他面側に連通する複数の細孔Cが設けられたPVA多孔膜であって、膜厚が10nm以上500nm以下であり、各細孔Cの最小径dが1nm以上10nm以下であるPVA多孔膜21を用いることによって前記課題を解決できる。 【選択図】図2
PROBLEM TO BE SOLVED: To provide a PVA (polyvinyl alcohol) porous membrane having high performance in permeating an inorganic solvent and water and a high rate of removing nanoparticles with a diameter of 10 nm or less, a method for manufacturing the PVA porous membrane, and a filtration filter having the PVA porous membrane.SOLUTION: The PVA porous membrane 21 with reticulated PVA laminated in a thin membrane state and with a plurality of pores C provided communicating from one face side to the other face side, has a membrane thickness of 10 nm or more and 500 nm or less and the minimum diameter d of each pore C being 1 nm or more and 10 nm or less.




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