Films or impregnated matrices readily made from aqueous polyvinyl alcohol solution. Controlled thickness films made by casting precise quantities of aqueous polymer solution on smooth surface, allowing water to evaporate and then removing film. Composite separators formed in similar fashion by impregnating cloth matrix with polyvinyl alcohol solution and drying composite. Insoluble thin hydrophilic membranes made from aqueous systems, and use of undesirable organic solvents not required.
In Situ Cross-Linking of Polyvinyl Alcohol Films
NASA Tech Briefs ; 8 , 2
1984-11-01
Miscellaneous
No indication
English
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