Preparation and characterization of highly hydrophobic poly(vinylidene fluoride) - Clay nanocomposite nanofiber membranes (PVDF-clay NNMs) for desalination using direct contact membrane distillation

被引：260

作者：

Prince, J. A. ^{[1
]}

Singh, G. ^{[1
]}

Rana, D. ^{[2
]}

Matsuura, T. ^{[2
]}

Anbharasi, V. ^{[1
]}

Shanmugasundaram, T. S. ^{[1
]}

机构：

[1] Ngee Ann Polytech, Sch Engn, Ctr Innovat, Singapore 599489, Singapore

[2] Univ Ottawa, Dept Chem & Biol Engn, Ind Membrane Res Inst, Ottawa, ON K1N 6N5, Canada

来源：

JOURNAL OF MEMBRANE SCIENCE | 2012年 / 397卷

关键词：

Direct contact membrane distillation; Electrospun nanofiber; Nanocomposite membrane; Clay; Poly(vinylidene fluoride); AIR-GAP MEMBRANE; POLYMER/CLAY NANOCOMPOSITES; COMPOSITE MEMBRANES; BARRIER PROPERTIES; POLYPROPYLENE; FABRICATION; MORPHOLOGY; WATER;

D O I：

10.1016/j.memsci.2012.01.012

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Electrospun nanofiber membranes consisting of poly(vinylidene fluoride) (PVDF) blended with clay nanocomposites were prepared and tested in this paper for direct contact membrane distillation (DCMD) applications. Various compositions of PVDF-clay nanocomposite nanofiber membranes (NNMs) were prepared and characterized by water contact angle, Fourier transform infrared spectroscopy, differential scanning calorimetry, scanning electron microscopy and investigated for DCMD. The incorporation of clay nanocomposites increase the hydrophobicity of the membranes, which increase as the concentration of clay nanocomposite increases in the mixture. The highest water contact angle achieved was 154.20 +/- 3.04 degrees. The melting point of the PVDF-clay electrospun nanofiber membrane increases with the increasing concentration of clay indicating that the clay particles influence the crystallization process of the nanocomposite membrane. The PVDF-clay NNMs showed improved performance in DCMD applications and provide a way to prevent pore wetting in DCMD process. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：80 / 86

页数：7

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