AOPAN/PU复合膜的制备及其金属离子吸附性能研究  

Preparation and metal ion adsorption properties of AOPAN/PU composite membrane

作　　者：赵磊 赵宝宝 丁程 王伟 凤权 Zhao Lei;Zhao Baobao;Ding Cheng;Wang Wei;Feng Quan(School of Textile and Clothing,Anhui University,Wuhu 241000)

机构地区：[1]安徽工程大学纺织服装学院,芜湖241000

出　　处：《化工新型材料》2024年第8期111-115,共5页New Chemical Materials

基　　金：安徽省重点研究与开发计划(2022107020006)。

摘　　要：采用聚乙烯吡咯烷酮(PVP)和聚乙二醇(PEG)对聚丙烯腈/聚氨酯(PAN/PU)涂层微孔进行调控。通过扫描电镜分析和水通量截留率测试发现,PVP含量为6%、PEG含量为4%时,平板膜涂层性能最佳。以无纺布作为基底,采用浸轧涂覆的方法将最优参数的铸膜液涂覆在无纺布上,通过化学改性制备胺肟化聚丙烯腈/聚氨酯(AOPAN/PU)复合膜,探究复合膜通量变化和金属离子截留性能。研究表明,改性后制备的AOPAN/PU熔喷复合膜水通量由349L/(m^(2)·h)增长到435L/(m^(2)·h),在对100mg/L的Cu^(2+)、Fe^(3+)、Zn^(2+)混合金属溶液3次吸附循环测试后发现,最终滤液中金属离子截留率均在90%以上。Polyvinylpyrrolidone(PVP)and polyethylene glycol(PEG)were used to regulate the micropores of polyacrylonitrile/polyurethane(PAN/PU)coatings.Through scanning electron microscopy analysis and water flux retention testing,it was found that the performance of the flat film coating was optimal when the PVP content was 6%and the PEG content was 4%.Using non-woven fabric as the substrate,the casting solution with optimal parameters was coated on the non-woven fabric using the dip-coating method,and amine oxime polyacrylonitrile/polyurethane(AOPAN/PU)composite membrane was prepared through chemical modification,exploring the flux changes and metal ion retention performance of the composite membrane.The research showed that the water flux of the AOPAN/PU melt blown composite membrane prepared after modification increased from 349L·m^(-2)·h^(-1)to 435L·m^(-2)·h^(-1).After three adsorption cycle tests on 100mg/L Cu^(2+),Fe^(3+),and Zn^(2+)mixed metal solutions,the metal ion retention rate in the final filtrate was above 90%.

关 键 词：平板膜 熔喷布 通量 胺肟化 金属离子吸附 

分 类 号：X522[环境科学与工程—环境工程] TS1[轻工技术与工程—纺织科学与工程]