Fabrication of a superhydrophobic poly(vinylidene fluoride) hollow fibre membrane by spray deposition

Micro & nano letters

article

Pengrui Jin¹  Chuan Huang¹  Yifu Li¹  Jiaxiang Li¹  Liao Wang¹ 

[1] State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University;College of Resources and Environmental Science, Chongqing University

关键词: polymer fibres;    membranes;    hydrophobicity;    spray coating techniques;    contact angle;    surface roughness;    nanoparticles;    superhydrophobic poly(vinylidene fluoride) hollow fibre membrane;    spray deposition;    PVDF hollow hbre membrane;    liquid–gas membrane contactor;    hydrophobic nanoparticles;    polydimethylsiloxane;    surface hydrophobicity;    surface roughnesses;    water contact angle;   

DOI  :  10.1049/mnl.2017.0394

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

In this work, a poly(vinylidene fluoride) (PVDF) hollow fibre membrane for liquid–gas membrane contactor was coated with a superhydrophobic layer comprising a combination of hydrophobic SiO2 nanoparticles and polydimethylsiloxane. A rough layer of SiO2 deposited on the PVDF membrane resulted in an enhanced surface hydrophobicity. The surface structure of the pristine PVDF significantly affected the homogeneity of the generated SiO2 layer. A uniform surface coating on the PVDF upper layer resulted from the presence of micrometre and nanometre sized roughnesses on the surface of the PVDF membrane, which was achieved with a SiO2 concentration of 4.44 mg ml−1 (0.2 g/45 ml) in the coating solution. As a result, the water contact angle of the modified surface was recorded as 155 ± 3°, which is higher than that of the pristine surface.

【 授权许可】

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