高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (3): 598-606.doi: 10.7503/cjcu20170409

• 高分子化学 • 上一篇    

二氧化硅接枝聚合磷酸胆碱/聚醚砜复合膜的制备及性能

梁旭1,2, 秦利娟1, 张亚涛1, 刘金盾1()   

  1. 1. 郑州大学化工与能源学院, 郑州 450001
    2. 河南能源化工集团研究院有限公司, 郑州 450046
  • 收稿日期:2017-06-28 出版日期:2018-03-10 发布日期:2018-01-15
  • 作者简介:联系人简介: 刘金盾, 男, 博士, 教授, 博士生导师, 主要从事膜分离技术相关研究. E-mail:liujindun@zzu.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 21476215)资助

Preparation and Properties of Poly-2-methacryloyloxyethyl Phosphorylcholine Grafted Silica/Polyethersulfone Composite Membrane

LIANG Xu1,2, QIN Lijuan1, ZHANG Yatao1, LIU Jindun1,*()   

  1. 1. School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China
    2. Research Institute of Henan Energy and Chemical Industry Group, Zhengzhou 450046, China
  • Received:2017-06-28 Online:2018-03-10 Published:2018-01-15
  • Contact: LIU Jindun E-mail:liujindun@zzu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21476215)

摘要:

以2-甲基丙烯酰氧基乙基磷酰胆碱(MPC)为两性离子单体, 采用反向原子转移自由基聚合(RATRP)技术, 在纳米二氧化硅表面接枝聚合磷酸胆碱, 合成了两性离子材料二氧化硅-聚磷酸胆碱(SiO2-PMPC); 将其与聚醚砜(PES)共混, 利用相转化方法制备了聚醚砜基杂化荷电复合膜(SiO2-PMPC/PES). 采用透射电子显微镜(TEM)、 扫描电子显微镜(SEM)、 傅里叶变换红外光谱(FTIR)、 X射线光电子能谱(XPS)、 接触角、 原子力显微镜(AFM)及膜性能测试等研究了杂化荷电复合膜的结构与分离性能, 考察了SiO2-PMPC含量对杂化荷电复合膜性能的影响. 研究结果表明, SiO2-PMPC的添加有助于提高PES复合膜的亲水性; 杂化荷电复合膜对染料活性黑5和活性绿19的截留率较高, 分别达到82.6%和92.4%, 而杂化荷电复合膜对无机盐的截留率则保持在8%以下, 在保持较高水通量的同时, 杂化荷电复合膜能够有效分离活性染料与无机盐.

关键词: 2-甲基丙烯酰氧基乙基磷酸胆碱, 聚醚砜, 复合膜, 纳米二氧化硅

Abstract:

Zwitterionic 2-methacryloyloxyethyl phosphorylcholine modified SiO2(SiO2-PMPC) was fabricated through reverse atom transfer radical polymerization method(RATRP). Then, SiO2-PMPC/PES composite membranes were prepared using polyethersulfone(PES) as membrane material, via blending-phase inversion method. Morphological structures and properties of the composite membranes were studied by transmission electron microscopy(TEM), scanning electron microscopy(SEM), Fourier transform-infrared spectroscopy(FTIR), X-ray photoelectron spectroscopy(XPS), atomic force microscopy(AFM), contact angle and test membrane performance set-up. The results show that hydrophilicity of the composite membranes increases, with increasing the content of charged zwitterionic materials. The composite membranes present relatively higher rejection of 82.6% to Reactive Black 5 and 92.4% to Reactive Green 19, respectively. However, the retentions of the composite membranes to inorganic salts are less than 8%. The composite membrane can be applied for effectively separating the reactive dyes from the inorganic salts while maintaining high water flux.

Key words: 2-Methacryloyloxyethyl phosphorylcholine, Polyethersulfone, Composite membrane, Nano-silica

中图分类号: