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Preparation of asymmetric membranes by the solvent extraction of polymer components from polymer blends
Preparation of asymmetric membranes by the solvent extraction of polymer components from polymer blends
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机译:通过溶剂萃取聚合物共混物中的聚合物组分制备不对称膜
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摘要
Asymmetric membranes are prepared by selectively treating a major surface of an incompatible polymer blend prepared by melt blending having at least one extractable polymer component and then contacting the polymer blend with a solvent to extract the extractable polymer component. The treated surface becomes the dense layer of the membrane. The major surface is treated by crosslinking, by contacting the surface with a crosslinking agent which is subsequently cured, or by contacting the surface with an agent which reacts with groups on the surface and imparts a polar character to it.
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