化工学报 ›› 2018, Vol. 69 ›› Issue (11): 4869-4878.DOI: 10.11949/j.issn.0438-1157.20180551

• 材料化学工程与纳米技术 • 上一篇    下一篇

胍基聚合物接枝改性制备抗菌抗污染超滤膜

孙雪飞1, 高勇强1, 赵颂1, 张文1, 王志1, 王晓琳2   

  1. 1. 化学工程联合国家重点实验室, 天津大学化工学院化学工程研究所, 天津市膜科学与海水淡化技术重点实验室, 天津 300072;
    2. 化学工程联合国家重点实验室, 清华大学化学工程系, 北京 100084
  • 收稿日期:2018-05-24 修回日期:2018-07-20 出版日期:2018-11-05 发布日期:2018-11-05
  • 通讯作者: 赵颂
  • 基金资助:

    国家自然科学基金项目(21776205);天津市应用基础与前沿技术研究计划项目(15JCQNJC43400)。

Ultrafiltration membrane with antibacterial and antifouling properties by grafting guanidine based polymer

SUN Xuefei1, GAO Yongqiang1, ZHAO Song1, ZHANG Wen1, WANG Zhi1, WANG Xiaolin2   

  1. 1. State Key Laboratory of Chemical Engineering, Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin 300072, China;
    2. State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
  • Received:2018-05-24 Revised:2018-07-20 Online:2018-11-05 Published:2018-11-05
  • Supported by:

    supported by the National Natural Science Foundation of China (21776205) and the Tianjin Research Program of Basic Research and Frontier Technology (15JCQNJC43400).

摘要:

表面接枝杀菌材料是提高膜抗菌和抗污染性能的常用手段。胍基化合物具有杀菌广谱、易制备、低毒等优点,已受到研究者的广泛关注。通过聚乙烯亚胺和盐酸胍的熔融聚合反应制备胍基聚合物(聚乙烯亚胺胍盐酸盐,PEIGH),并利用聚多巴胺中间层将其接枝到聚砜超滤膜表面。结果表明,PEIGH具有良好的抗菌性能,经其改性后的超滤膜润湿性能提高,纯水通量提高了11%~98%,牛血清蛋白截留率由96.6%提高到98.3%以上。抗菌性能、抗有机物污染和抗生物污染性能均得到明显改善。

关键词: 膜, 超滤, 聚乙烯亚胺胍盐酸盐, 表面改性, 选择性, 抗生物污染

Abstract:

Surface grafting bactericidal materials are commonly used methods to improve the antibacterial and anti-pollution properties of membranes. Guanidine compounds have received a lot of attentions due to their efficient and broad-spectrum antibacterial properties, easy preparation and low toxicity to the mammalian cell. Herein, a guanidine based polymer, namely PEIGH, was prepared through melt phase polycondensation of polyethyleneimine and guanidine hydrochloride, then used for ultrafiltration membrane surface modification with the assist of polydopamine. The results show that the synthesized PEIGH possesses good antibacterial property. Compared to the unmodified membranes, the membranes modified by PEIGH have better wettability. The permeation flux increases by 11%-98% and rejection for bovine serum albumin raises from 96.6% to 98.3% above. Antibacterial, anti-organic and anti-biobial properties have been significantly improved.

Key words: membranes, ultrafiltration, PEIGH, surface modification, selectivity, antibiofouling

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