SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2017, Vol. 25 ›› Issue (12): 1831-1837.DOI: 10.1016/j.cjche.2017.04.007

• 第25届中国过程控制会议专栏 • 上一篇    下一篇

A strong adhesive block polymer coating for antifouling of large molecular weight protein

Xianling Meng, Xia Jiang, Peijun Ji   

  1. Department of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
  • 收稿日期:2016-12-20 修回日期:2017-04-07 出版日期:2017-12-28 发布日期:2018-01-18
  • 通讯作者: Peijun Ji,E-mail address:jipj@mail.buct.edu.cn.
  • 基金资助:

    Supported by the National Natural Science Foundation of China (21476023).

A strong adhesive block polymer coating for antifouling of large molecular weight protein

Xianling Meng, Xia Jiang, Peijun Ji   

  1. Department of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2016-12-20 Revised:2017-04-07 Online:2017-12-28 Published:2018-01-18
  • Contact: Peijun Ji,E-mail address:jipj@mail.buct.edu.cn.
  • Supported by:

    Supported by the National Natural Science Foundation of China (21476023).

摘要: Some proteins secreted by microorganisms have large molecularweights.Wereport here an approach to prepare coating by multilayer polymers for antifouling of proteins, especially the proteins with a large molecular weight. Stainless steel was used as the model substrate. The substrate was first coatedwith a hybrid polymer film, which was formed by simultaneous hydrolytic polycondensation of 3-aminopropyltriethoxysilane and polymerization of dopamine (HPAPD). After grafting the macroinitiator 2-bromoisobutyryl bromide, the block polymer brushes PMMA-b-PHEMA were grafted. Three proteins were used to test protein adsorption and antifouling behavior of the coating, including recombinant green fluorescent (54 kDa), recombinant R-transaminase (2×90 kDa), and recombinant catalase (4×98 kDa). It is demonstrated that the block polymer brushes not only can prevent the adsorption of small molecular weight proteins, but also can significantly reduce the adsorption of the large molecular weight proteins.

关键词: Antifouling, Protein, Block polymer, Surface, Polymerization

Abstract: Some proteins secreted by microorganisms have large molecularweights.Wereport here an approach to prepare coating by multilayer polymers for antifouling of proteins, especially the proteins with a large molecular weight. Stainless steel was used as the model substrate. The substrate was first coatedwith a hybrid polymer film, which was formed by simultaneous hydrolytic polycondensation of 3-aminopropyltriethoxysilane and polymerization of dopamine (HPAPD). After grafting the macroinitiator 2-bromoisobutyryl bromide, the block polymer brushes PMMA-b-PHEMA were grafted. Three proteins were used to test protein adsorption and antifouling behavior of the coating, including recombinant green fluorescent (54 kDa), recombinant R-transaminase (2×90 kDa), and recombinant catalase (4×98 kDa). It is demonstrated that the block polymer brushes not only can prevent the adsorption of small molecular weight proteins, but also can significantly reduce the adsorption of the large molecular weight proteins.

Key words: Antifouling, Protein, Block polymer, Surface, Polymerization