POROUS FILM AND METHOD FOR MANUFACTURING THE SAME

    公开(公告)号:US20230383072A1

    公开(公告)日:2023-11-30

    申请号:US17887524

    申请日:2022-08-15

    CPC classification number: C08J5/18 C08J9/228 C08J2201/0504 C08J2205/044

    Abstract: A porous film and a method for manufacturing the same are provided. The method includes: using a ternary mixed solvent to dissolve a structural material selected from the group consisting of nitrocellulose, polyvinylidene fluoride, polysulfone, and any combination thereof and an auxiliary structural material selected from the group consisting of cellulose acetate, polylactic acid, poly(lactic-co-glycolic acid), poly-(D)glucosamine, and any combination thereof, so as to obtain a mixed solution; adding water into the mixed solution to obtain a film-forming solution; coating the film-forming solution onto a carrier substrate to form a wet film; and vaporizing the ternary mixed solvent and the water to form the porous film on the carrier substrate. The ternary mixed solvent, based on a total weight thereof being 100 phr, includes 28 phr to 38 phr of ethanol, 25 phr to 42 phr of isopropanol, and 25 phr to 40 phr of acetone.

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