Hydrophobic modification of PVDF hollow fiber membranes using polydimethylsiloxane for VMD process

IF 0.8 4区工程技术 Q4 ENGINEERING, CHEMICAL

Membrane Water Treatment Pub Date : 2019-07-01 DOI:10.12989/MWT.2019.10.4.251

Z. Cui, Daqing Tong, Xue Li, Xiaozu Wang, Zhaohui Wang

引用次数: 0

Abstract

Fabricating hydrophobic porous membrane is important for exploring the applications of membrane distillation (MD). In the present paper, poly(vinylidene fluoride) (PVDF) hollow fiber membrane was modified by coating polydimethylsiloxane (PDMS) on its surface. The effects of PDMS concentration, cross-linking temperature and cross-linking time on the performance of the composite membranes in a vacuum membrane distillation (VMD) process were investigated. It was found that the hydrophobicity and the VMD performance of the PVDF hollow fiber membrane were obviously improved by coating PDMS. The optimal PDMS concentration, cross-linking temperature and cross-linking time were 0.5 wt%, 80 degree(c), and 9 hr, respectively.

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聚二甲基硅氧烷在VMD工艺中对PVDF中空纤维膜进行疏水改性

制备疏水性多孔膜对探索膜蒸馏（MD）的应用具有重要意义。本文采用聚二甲基硅氧烷（PDMS）对聚偏二氟乙烯（PVDF）中空纤维膜进行表面改性。研究了PDMS浓度、交联温度和交联时间对真空膜蒸馏（VMD）过程中复合膜性能的影响。结果表明，包被PDMS能明显改善PVDF中空纤维膜的疏水性和VMD性能。最佳PDMS浓度、交联温度和交联时间分别为0.5 wt%、80℃和9小时。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Membrane Water Treatment ENGINEERING, CHEMICAL-WATER RESOURCES

CiteScore

1.90

自引率

30.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Membrane and Water Treatment(MWT), An International Journal, aims at opening an access to the valuable source of technical information and providing an excellent publication channel for the global community of researchers in Membrane and Water Treatment related area. Specific emphasis of the journal may include but not limited to; the engineering and scientific aspects of understanding the basic mechanisms and applying membranes for water and waste water treatment, such as transport phenomena, surface characteristics, fouling, scaling, desalination, membrane bioreactors, water reuse, and system optimization.