PES-COOH/3D-TFC纳滤膜的制备及性能研究  

Preparation and performance of PES-COOH/3D-TFC nanofiltration membrane

作　　者：胡春晓 樊媛芳 张雨豪 姜尚恒 耿直[1] 王驰 霍明昕[1] HU Chun-xiao;FAN Yuan-fang;ZHANG Yu-hao;JIANG Sang-heng;GENG Zhi;WANG Chi;HUO Ming-xin(School of Environment,Northeast Normal University,Changchun 130117,China)

机构地区：[1]东北师范大学环境学院,吉林长春130117

出　　处：《东北师大学报（自然科学版）》2024年第4期144-151,共8页Journal of Northeast Normal University(Natural Science Edition)

基　　金：中央高校基本科研业务费资助项目(CGZH202210)。

摘　　要：采用分子设计手段,将不同含量羧基基团引入亲水性羧化聚芳醚砜材料(PES-COOH)活性分离层以改善其亲水性,同时结合3D打印技术制备了具有低曲折度、微通孔结构且孔隙率可调的支撑层,开发出渗透、截留、抗污染性能均得到提升的PES-COOH/3D-TFC纳滤膜.通过红外光谱、扫描电镜、生物显微镜、水接触角测试和Zeta电位测试等方法测试了其物理化学性能,并探究了分离层羧基基团含量和支撑层微观结构对复合膜性能的影响.结果表明:当分离层羧基含量为60%、支撑层孔隙率为70%时,复合纳滤膜的水通量为4.4 L/(m^(2)·h)、硫酸钠截留率为78.1%,抗污染测试中通量衰减率和通量恢复率分别为23.8%和96.2%.The molecular design method was used to introduce different content of carboxyl groups into the PES-COOH active separation layer to improve its hydrophilicity,combined with the support layer with low tortuosity,micropore structure and adjustable porosity prepared by 3D printing technology,a PES-COOH/3D-TFC nanofiltration membrane with improved permeability,rejection and anti-pollution performance was improved.The physical and chemical properties of the composite membrane were tested by infrared spectroscopy,scanning electron microscopy,biological microscopy,water contact angle test and Zeta potential test,and the effects of the carboxyl group content of the separation layer and the microstructure of the support layer on the properties of the composite membrane were investigated.The results showed that when the carboxyl content of the separation layer was 60%and the porosity of the support layer was 70%,the water flux of the composite nanofiltration membrane was 4.4 L/(m^(2)·h),the rejection rate of sodium sulfate was 78.1%,and the flux attenuation rate and flux recovery rate in the anti-pollution test were 23.8%and 96.2%.

关 键 词：复合纳滤膜 聚芳醚砜 3D打印 

分 类 号：TQ028.8[化学工程]