殷秋,崔朝亮,李卫星,邢卫红

• 1:南京工业大学材料化学工程国家重点实验室

摘要(Abstract)：

通过非溶剂诱导相分离的方法制备聚苯砜(PPSU)膜,首先通过水相聚合法制备丙烯腈顺丁烯二酸酐(PANCMA)聚合物,分别通过红外光谱(FT-IR)和X射线衍射(XRD)表征此聚合物,由于此聚合物中存在大量羧基官能团,所以采用该聚合物亲水改性PPSU膜,考察了不同含量PANCMA聚合物(0%,0.5%,1%,2%,3%(wt))对PPSU膜性能的影响,分别考察了PANCMA聚合物对PPSU膜的微观结构、亲水性、通量、截留分子量、BSA静态吸附量以及对甲基蓝染料截留率的影响,结果表明:通过扫描电子显微镜(SEM)观察膜的微观结构,随着PANCMA聚合物含量的增大,指状孔逐渐减小,并且膜的厚度逐渐增加,随着PANCMA聚合物含量的增加,PPSU/PANCMA复合膜的纯水通量由原膜的59.3 L?m-2?h-1降至10.8 L?m-2?h-1,截留分子量由原膜的17,500 Da降低至4,400 Da,接触角由原来的78°降至38°,PANCMA聚合物一定程度提高了PPSU膜的亲水性,其中以PANCMA聚合物含量为2%(wt)时效果最佳,BSA的静态吸附量与原膜相比降低了近20倍,耐污染性能变好;采用制备的膜过滤甲基蓝溶液,截留率由原膜的54%增至89%,表明改性后膜的截留性能变好。

关键词(KeyWords)： 聚苯砜;丙烯腈顺丁烯二酸酐;亲水改性;耐污染性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(21576132)

作者(Author): 殷秋,崔朝亮,李卫星,邢卫红

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