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化工学报  2015 

Ag3PO4改性PVDF超滤膜的结构与性能

DOI: 10.11949/j.issn.0438-1157.20140920, PP. 471-477

Keywords: ,过滤,分离性,Ag3PO4,膜污染,亲水性

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Abstract:

将不同量Ag3PO4均匀地分散在聚偏氟乙烯(PVDF)铸膜液中,利用相转化法制备了改性PVDF膜,通过扫描电镜(SEM)、接触角测定、过滤实验和污染性测试等研究了其微结构、分离性和耐污染性等,并考察了膜污染后的清洗效果。结果表明,添加Ag3PO4的PVDF膜具有不同的微结构与性能,当添加1%的Ag3PO4时,膜皮层变薄、微孔数增多,并呈现出最优化的水通量、亲水性、力学性、抗污染能力和截留率等。采用太阳光-水清洗能使改性膜的通量恢复率达到85%以上。

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