Improving the antifouling property of polyethersulfone ultrafiltration membrane by incorporation of dextran grafted halloysite nanotubes
Improving the antifouling property of polyethersulfone ultrafiltration membrane by incorporation of dextran grafted halloysite nanotubes
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DOI：
10.1016/j.cej.2013.09.094
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发表时间：
2014-02
影响因子：
15.1
通讯作者：
Haoxiang Yu;Yatao Zhang;Xiaobo Sun;Jindun Liu;Haoqing Zhang
中科院分区：
文献类型：
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作者：
Haoxiang Yu;Yatao Zhang;Xiaobo Sun;Jindun Liu;Haoqing Zhang
采用传统的相转化法制备了葡聚糖接枝埃洛石纳米管（HNTs-Dextran）改性聚醚砜（PES）超滤膜。傅里叶变换红外光谱（FTIR）、热重分析（TGA）和透射电子显微镜（TEM）结果表明，右旋糖酐成功地修饰了HNT。通过接触角、扫描电子显微镜（SEM）、错流过滤和渗透率测量对杂化膜进行了表征。结果表明，加入HNTs-葡聚糖后，膜的表面亲水性得到明显改善。与纯PES膜相比，杂化膜具有更高的通量和良好的渗透性能。此外，杂化膜中HNTs-葡聚糖的含量是影响膜形态和分离性能的重要因素。
Polyethersulfone (PES) ultrafiltration membrane with improved antifouling property was prepared via traditional phase inversion method by incorporation of dextran grafted halloysite nanotubes (HNTs-Dextran). Fourier transforms infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and transmission electron microscopy (TEM) results showed that HNTs were modified by dextran successfully. The hybrid membranes were characterized by contact angle, scanning electron microscopy (SEM), and cross-flow filtration and antifouling measurements. The results indicated that the surface hydrophilicity of membranes was significantly improved after adding HNTs-Dextran. Compared with the pure PES membranes, the hybrid membranes possess higher flux and good antifouling properties. In addition, the content of HNTs-Dextran in the hybrid membranes was an important factor affecting the morphology and separation properties of the membranes.