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Method for manufacturing microporous chlorinated poly(vinyl chloride) membrane using poly(vinyl pyrrolidone) and microporous chlorinated poly(vinyl chloride) membrane manufactured thereby
Method for manufacturing microporous chlorinated poly(vinyl chloride) membrane using poly(vinyl pyrrolidone) and microporous chlorinated poly(vinyl chloride) membrane manufactured thereby
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机译：使用聚（乙烯基吡咯烷酮）制造微孔氯化聚（氯乙烯）膜的方法和由此制造的微孔氯化聚（氯乙烯）膜
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摘要
PURPOSE: A method for manufacturing a microporous chlorinated poly (vinyl chloride) membrane using poly (vinyl pyrrolidone) is provided to obtain a membrane for microfiltration with high flux rate due to increased interconnectivity. CONSTITUTION: The method includes the steps of dissolving a chlorinated poly (vinyl chloride) into tetrahydrofuran (THF); adding 1 to 30 wt.% of alcohol and 0.5 to 2.5 wt.% of poly vinyl pyrrolidone (based on the total polymer weight) to above solution; impregnating a nonwoven fabric in above polymer solution; and drying it at 20 to 25 deg.C and relative humidity of 45 to 90%. The obtained microporous chlorinated poly (vinyl chloride) membrane has a porosity of 40 to 87%, pore size distribution of 0.5 to 10 m and a flux rate of 2000 to 8000 LMH.
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