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In this study, oily waste water was treated by polyvinylpyrrolidone (PVP) grafted polyvinylidene fluoride (PVDF) ultrafiltration membranes. The membranes were prepared stepwise using defluorination, double bond hydration and PVP grafting. The modified membranes were characterized by FTIR and Raman spectroscopy, BET, and water contact angles. Modification mechanism was discussed and compared at the...
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