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张国权
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副教授   博士生导师   硕士生导师

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性别: 男

毕业院校: 大连理工大学

学位: 博士

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所在单位: 环境学院

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Rapidly self-assembled polydopamine coating membranes with polyhexamethylene guanidine: Formation, characterization and antifouling evaluation

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论文类型: 期刊论文

第一作者: Zhao, Chuanqi

通讯作者: Zhao, CQ (reprint author), Shenyang Univ, Key Lab Ecorestorat Reg Contaminated Environm, Minist Educ, South Wanghua St, Shenyang 110044, Peoples R China.

合写作者: Zhang, Guoquan,Xu, Xiaochen,Yang, Fenglin,Yang, Yuesuo

发表时间: 2017-01-01

发表刊物: COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

收录刊物: SCIE、EI

卷号: 512

页面范围: 41-50

ISSN号: 0927-7757

关键字: PVDF membrane; Polydopamine; Polyhexamethylene guanidine; Deposition efficiency; Hydrophilic modification; Antifouling

摘要: A novel rapidly deposited polydopamine (PDA) layer with polyhexamethylene guanidine (PHMG) was developed for the modification of hydrophilic and antifouling poly(vinylidene fluoride) (PVDF) membranes on the basis of mussel-inspired surface chemistry in our latest work. The effect of PHMG on dopamine polymerization was investigated and experimental results demonstrated that the existence of water-soluble PHMG had a significant impact on the dispersion and deposition efficiency of PDA polymerized process due to strong interactions between PDA and PHMG. The morphology, structure, surface composition, and hydrophilicity of membranes were modified by the PDA-PHMG coating, as confirmed by scanning electron microscopy (SEM), confocal laser scanning microscope (CLSM), Fourier transform infrared spectroscopy (FTIR) and contact angle measurements. Acceleration of PDA polymerization was found to enhance the surface hydrophilicity and improve the water permeability of modified membranes. The PDA-PHMG coating membranes demonstrated excellent antifouling performances, including higher specific flux and flux recovery rate (FRR), lower adsorption of contaminants, and more resistant against irreversible fouling. The novel surface modification strategy was shown to be applicable to flat-sheet PVDF membranes and was relatively easy to operate under mild reaction conditions. (C) 2016 Elsevier B.V. All rights reserved.

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