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科技导报  2015 

以N,N'-亚甲基双丙烯酰胺为单体紫外光接枝制备抗污染PVDF超滤膜

DOI: 10.3981/j.issn.1000-7857.2015.08.005, PP. 36-40

Keywords: 紫外光接枝,表面改性,聚偏氟乙烯膜,抗污染

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Abstract:

采用紫外光照接枝N,N'-亚甲基双丙烯酰胺单体的改性方法,对聚偏氟乙烯(PVDF)平板超滤膜进行抗污染改性,研究不同紫外接枝改性条件对膜性能的影响。通过扫描电镜、全反射红外光谱对改性前后膜的表面微观形貌和结构进行表征。结果表明,膜的表面变得更加光滑,引入的亲水性基团,提高了亲水性。在单体浓度为0.7mol/L,光照时间为3min的条件下,改性效果最好;膜的抗污染性能最佳,同时改性对膜的通量影响较小。该改性方法的主要优点是通过水相接枝液就可对PVDF表面进行改性,大大降低改性实验的要求和成本。

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