羧基化氧化石墨烯/聚偏氟乙烯杂化膜合成及其水处理研究  

Research on synthesis of carboxylation graphene oxide/polyvinylidene fluoride hybrid membrane and its water treatment

作　　者：杨文韬 朱小燕 严春杰 王洪权 段平 刘凤翔 闫雪莲 

机构地区：[1]中国地质大学(武汉)材料与化学学院,湖北武汉430074

出　　处：《实验技术与管理》2017年第9期64-68,共5页Experimental Technology and Management

基　　金：中央高校基本科研业务费(2017);校级教学研究项目(2016A02);国家级大学生创新创业项目(201610491217)

摘　　要：羧基化处理氧化石墨烯(GO)得到羧基化氧化石墨烯(GOC),通过共混法制备复合膜,对比研究GO、GOC对聚偏氟乙烯(PVDF)膜的亲水性、抗污染性等性能的影响,测试了膜的亲水接触角、膜通量、蛋白质截留率、通量恢复率等。结果表明:GOC/PVDF膜部分β晶型转变为α晶型,表面小孔增多,断面指状孔及海绵状孔径变小,热稳定性提高,亲水性增强,接触角由原膜的81.0°降低到41.2°;水通量和孔隙率分别提高至原膜的3倍和2倍;BSA截留率最大可达到40%。The carboxylation graphene oxide（GOC）is obtained by the graphene oxide（GO）treated by carboxylation,and the composite membrane is prepared by the joint-blending method.The effect of GO and GOC on the hydrophilicity and anti-fouling properties of the polyvinylidene fluoride（PVDF）membrane is studied,and the hydrophilic contact angle,membrane flux,protein retention rate,flux recovery rate,etc,are tested.The results show that theβcrystal form of the GOC/PVDF membrane is transformed into theαcrystal form and the surface porosity increases.The cross section finger hole and the spongy pore diameter become smaller,and the thermal stability and the hydrophilicity increase.The contact angle decreases from 81.0° to 41.2°,the water flux and the porosity are increased to three times and twice as much as that of the original membrane respectively,and the maximum rejection rate of BSA reaches 40%.

关 键 词：羧基化氧化石墨烯 聚偏氟乙烯 杂化膜 水处理 

分 类 号：TB383[一般工业技术—材料科学与工程]