Open AccessFabrication of a superhydrophobic poly(vinylidene fluoride) hollow fibre membrane by spray deposition
Author(s) -
Jin Pengrui,
Huang Chuan,
Li Yifu,
Li Jiaxiang,
Wang Liao
Publication year - 2018
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2017.0394
Subject(s) - materials science , contact angle , membrane , polydimethylsiloxane , superhydrophobic coating , coating , nanometre , layer (electronics) , chemical engineering , nanoparticle , fabrication , composite material , fluoride , deposition (geology) , wetting , nanotechnology , chemistry , biology , medicine , inorganic chemistry , paleontology , biochemistry , alternative medicine , pathology , sediment , engineering
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 SiO 2 nanoparticles and polydimethylsiloxane. A rough layer of SiO 2 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 SiO 2 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 SiO 2 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.