通过共混法制备了含辣素衍生结构聚合物的抑菌性聚醚砜超滤膜.首先,用N-(5-甲基-3-异丁基-2羟基-苄基)-丙烯酰胺(MBHBA)和丙烯酸(AA)、甲基丙烯酸甲酯(MMA)制备了三元共聚物P(A-M-M),并通过红外光谱证实了聚合物的合成;然后考察了铸膜液中三元共聚物的质量浓度对所制备超滤膜性能的影响.结果表明,当P(A-M-M)质量分数为1%时,改性膜具有较高的综合性能:纯水通量和BSA截留率分别为183.8 L/(m2·h)和93.8%,与基膜相比略有提高;同时亲水性大幅增加,水静态接触角仅为57°,比基膜降低了17°;抑菌率达到了76%,远高于基膜的抑菌率(20%).
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