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highly viscous due to the high molecular weight of the poly- mer and the presence of strong hydrogen-bonding between PVA chains, as well as between PVA chains and water mole- cules. Therefore, during filtration, the entangled PVA chains gradually blocked the nanopores of polycarbonate membrane to some extent. As a result, the filtration rate was significantly slowed down, which further promoted the aggregation of PVA chains to form a compact film. |
9Â¥2012-04-07 11:58:11
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10Â¥2012-04-07 13:01:34














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