通过马来酸酐和苯乙烯合成了苯乙烯/马来酸交替共聚物（SMA）,并按不同质量比与聚偏氟乙烯（PVDF）共混,通过溶液相转化成膜法制备了PVDF/SMA共混膜。采用红外光谱、扫描电镜、膜通量测试等对不同铸膜液所形成膜的结构和性能进行了研究。结果表明,随着铸膜液中交替共聚物含量增大,所成膜及膜表面交替共聚物含量增大,膜孔尺寸增大,膜孔隙率升高,纯水通量增大,蛋白质截流能力下降,膜表面亲水性和耐蛋白污染能力增强。
Alternative copolymer of Man-alt-St（SMA）was synthesized by copolymerizing styrene（st） and maleic anhydride（MAH）,and then a series of SMA/poly（vinylidene flouride）（PVDF）blend membranes with different proportions of SMA and PVDF were prepared by solution phase inversion method.Membrane composition,morphology,structure and properties of SMA/PVDF membranes were characterized by infrared spectrum（FT-IR）,scanning electron microscopy（FESEM）,contact angle meter and membrane flux tester.Experimental results indicate that the pore size,the porosity,water flux,surface hydrophilic property and the anti-fouling properties of the blend membrane increase with the increase of alternating copolymer content in casting solution.The bovine serum solution was filtrated by the blend membranes.And the results show that the rejection rate decreases with the increase of the SMA content and pH value of the solution.
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