高等学校化学学报 ›› 2014, Vol. 35 ›› Issue (9): 2026-2030.doi: 10.7503/cjcu20140305

• 高分子化学 • 上一篇    下一篇

基于多巴胺自聚合与表面接枝PHGH制备抗菌纳滤膜

李霞1,2, 曹义鸣1(), 康国栋1, 于海军1, 刘中楠1,2   

  1. 1. 中国科学院大连化学物理研究所, 大连 116023
    2. 中国科学院大学, 北京 100049
  • 收稿日期:2014-04-04 出版日期:2014-09-10 发布日期:2019-08-01
  • 作者简介:联系人简介: 曹义鸣, 男, 博士, 研究员, 博士生导师, 主要从事膜技术研究. E-mail: ymcao@dicp.ac.cn
  • 基金资助:
    国家自然科学基金(批准号: 21206157)、 国家“八六三”计划项目(批准号: 2012AA03A611)和国家科技支撑计划项目(批准号: 2014BAI11B13)资助

Preparation of Antimicrobial Nanofiltration Membrane via Self-polymerization of Dopamine and Surface Grafting of PHGH

LI Xia1,2, CAO Yiming1,*(), KANG Guodong1, YU Haijun1, LIU Zhongnan1,2   

  1. 1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2014-04-04 Online:2014-09-10 Published:2019-08-01
  • Contact: CAO Yiming E-mail:ymcao@dicp.ac.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21206157), the National High Technology Research and Development Program of China(No.2012AA03A611) and the National Key Technology R & D Program of China(No.2014BAI11B13)

摘要:

在水溶液中将聚六亚甲基单胍盐酸盐(PHGH)共价接枝在经多巴胺自聚合改性的聚砜膜表面, 制备具有抗菌性能的纳滤膜. 采用全反射红外光谱(ATR-FTIR)、 扫描电子显微镜(SEM)和接触角测试考察膜表面的结构、 形貌和亲水性变化. 探讨PHGH含量对膜的接枝度及分离性能的影响, 并对膜的抗菌性能进行了评价. 结果表明, 经过多巴胺的自聚合和表面接枝PHGH后, 聚砜膜表面形成了具有纳滤分离性能的活性层, 并且膜表面亲水性得到改善. 随着PHGH含量的增大, 膜的纯水通量降低, 而对无机盐和染料的截留性能提高. 接枝后的复合膜具有较高的抗菌性能, 当PHGH含量为3%(质量分数)时, 抗菌率可达98.5%.

关键词: 多巴胺, 聚六亚甲基单胍盐酸盐, 纳滤膜, 抗菌性能

Abstract:

A novel antimicrobial nanofiltration membrane was fabricated by the self-polymerization of dopamine on polysulfone membrane surface and following surface grafting of polyhexamethylene guanidine hydrochloride(PHGH) in aqueous conditions. The membrane structures, morphologies and hydrophilicity were characterized by attenuated total reflectance-Fourier transform infrared spectroscopy(ATR-FTIR), scanning electron microscopy(SEM) and water contact angle measurement. The concentration of PHGH on grafting degree and filtration performance were investigated. Furthermore, the antibacterial performance of composite membranes was evaluated. The results showed that an active layer with nanofiltration performance was formed on polysulfone membrane surface and the hydrophilicity of membranes was significantly improved by the introduction of dopamine and PHGH. The fluxes decreased while the rejections of inorganic salts and dyes increased with the increasing concentration of PHGH. The composite membranes after grafting exhibited excellent antibacterial performance, when mass fraction of PHGH was 3%, the antibacterial rate reached up to 98.5%.

Key words: Dopamine, Polyhexamethylene guanidine hydrochloride, Nanofiltration membrane, Antimicrobial property

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