沉淀相转化法磁性聚砜超滤膜的性能研究  

Study on the performance of magnetic polysulfone ultrafiltration membrane by precipitation phase transformation method

作　　者：王坤 Wang Kun(Xinyi Xingchen New Material Technology Co.LTD.,Xinyi 221400,Jiangsu,China)

机构地区：[1]新沂市星辰新材料科技有限公司,江苏新沂221400

出　　处：《橡塑技术与装备》2018年第22期19-27,共9页China Rubber/Plastics Technology and Equipment

摘　　要：以聚砜为基材、聚乙烯吡咯烷酮为致孔剂、二甲基乙酰胺为溶剂,四氧化三铁为填料,采用浸没沉淀相转化法分别在水平磁场和无磁场的条件下制备聚砜-Fe_3O_4超滤膜,并采用死端超滤装置测试了的膜的渗透性,截留率,耐污染性等性能。实验结果表明:超滤膜通量、截留率随Fe_3O_4含量增加而增加;Fe_3O_4含量高于40%(质量分数)时,未磁化膜性能有明显的提高,Fe_3O_4含量高于60%(质量分数)时,磁化膜性能有明显的提高;相同Fe_3O_4含量下,Fe_3O_4高于60%(质量分数)时,磁化膜通量更大,截留率略低,绝对耐污染性更强,相对耐污染性更弱。In this paper, polysulfone Fe3O4 ultrafiltration membranes were prepared by immersionprecipitation phase inversion method with polysulfone as substrate, polyvinylpyrrolidone as porogen,dimethylacetamide as solvent and ferric oxide as filler, under the conditions of horizontal magnetic field andno magnetic field respectively. The permeability, rejection rate and pollution resistance of the membranewere tested by the dead end ultrafiltration device. The experimental results showed that the flux andrejection rate of the ultrafiltration membrane increased with the increase of Fe3O4; when the content of Fe3O4was higher than 40% （mass fraction）, the performance of the non-magnetized membranes was obviouslyimproved, when the content of Fe3O4 was higher than 60% （mass fraction）, the performance of magnetizedmembranes was obviously improved; at the same Fe3O4 content, when the Fe3O4 content is higher than 60%（mass fraction）, the flux of magnetized membrane is larger, the rejection rate is slightly lower, the absoluteresistance to pollution is stronger, and the relative resistance to pollution is weaker.

关 键 词：超滤膜 膜通量 截留率 渗透性 磁场力 相转化法 

分 类 号：TQ326.55[化学工程—合成树脂塑料工业]