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张国权
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毕业院校: 大连理工大学

学位: 博士

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Improvement of antifouling performances for modified PVDF ultrafiltration membrane with hydrophilic cellulose nanocrystal

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论文类型: 期刊论文

第一作者: Lv, Jinling

通讯作者: Zhang, GQ (reprint author), Dalian Univ Technol, Sch Environm Sci & Technol, Key Lab Ind Ecol & Environm Engn, MOE, Dalian 116024, Peoples R China.

合写作者: Zhang, Guoquan,Zhang, Hanmin,Zhao, Chuanqi,Yang, Fenglin

发表时间: 2018-05-15

发表刊物: APPLIED SURFACE SCIENCE

收录刊物: SCIE、EI

卷号: 440

页面范围: 1091-1100

ISSN号: 0169-4332

关键字: Cellulose nanocrystal; PVDF; Antifouling; Ultrafiltration membrane

摘要: Hydrophilic cellulose nanocrystal (CNC) was incorporated into hydrophobic poly(vinylidene fluoride) (PVDF) membrane via phase inversion process to improve membrane antifouling property. The effects of CNC on membrane morphology, hydrophilicity, permeability and antifouling property were investigated in-detail. Results indicated that the introduction of CNC into PVDF membrane enhanced the permeability by optimizing membrane microstructure and improving membrane hydrophilicity. A higher pure water flux of 206.9 L m(-2) h(-1) was achieved for CNC/PVDF membrane at 100 kPa, which was 20 times that of PVDF membrane (9.8 L m(-2) h(-1)). In bovine serum albumin filtration measurements, the permeation flux and flux recovery ratio of CNC/PVDF membrane were increased remarkably, while the irreversible fouling-resistance of CNC/PVDF membrane decreased by 48.8%. These results indicated that the CNC/PVDF membrane possessed superior antifouling property due to the hydrophilicity of CNC that formed a hydration layer on the membrane surface to effectively reduce contaminants adsorption/deposition. (C) 2018 Elsevier B.V. All rights reserved.

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