发明名称 |
POLYAMIDE NANO SEPARATION MEMBRANE CONTAINING PVA PROTECTIVE FILM |
摘要 |
PURPOSE: A polyamide nano separation membrane obtained by adding a polyvinyl alcohol layer as a protecting layer to a polyamide active layer having low chemical stability such as chlorine resistance is provided, which has excellent chemical stability in wide ranges of pH as well as high water permeability. CONSTITUTION: The nano separation membrane is characterized in that it comprises a cross linked polyvinyl alcohol as a protecting layer on a polyamide composite comprising a porous supporting body and a polyamide active layer, wherein the cross linked polyvinyl alcohol has a thickness of 0.01 to 0.1 micrometer. The membrane is prepared by adding a mixture solution of one or two or more ionomers selected from the group consisting of sodium alginate, chitosan and sulfonated polystyrene with polyvinyl alcohols to a polyamide active layer.
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申请公布号 |
KR20010039398(A) |
申请公布日期 |
2001.05.15 |
申请号 |
KR19990047767 |
申请日期 |
1999.10.30 |
申请人 |
KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY |
发明人 |
JEGAL, JONG GEON;LEE, GYU HO;OH, NAM UN;PARK, DEOK SUN |
分类号 |
C08J5/22;(IPC1-7):C08J5/22 |
主分类号 |
C08J5/22 |
代理机构 |
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