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Title: Tailoring surface hydrophilicity of porous electrospun nanofibers to enhance capillary and push-pull effects for moisture wicking
Authors: Dong, Yuliang
Kong, Junhua
Phua, Si Lei
Zhao, Chenyang
Thomas, Noreen L.
Lu, Xuehong
Keywords: Moisture transport
Porous nanofibers
Capillary motion
Issue Date: 2014
Publisher: © American Chemical Society
Citation: DONG, Y. ... et al, 2014. Tailoring surface hydrophilicity of porous electrospun nanofibers to enhance capillary and push-pull effects for moisture wicking. ACS Applied Materials & Interfaces, 6 (16), pp.14087-14095.
Abstract: In this article, liquid moisture transport behaviors of dual-layer electrospun nanofibrous mats are reported for the first time. The dual-layer mats consist of a thick layer of hydrophilic polyacrylonitrile (PAN) nanofibers with a thin layer of hydrophobic polystyrene (PS) nanofibers with and without interpenetrating nanopores, respectively. The mats are coated with polydopamine (PDOPA) to different extents to tailor the water wettability of the PS layer. It is found that with a large quantity of nanochannels, the porous PS nanofibers exhibit a stronger capillary effect than the solid PS nanofibers. The capillary motion in the porous PS nanofibers can be further enhanced by slight surface modification with PDOPA while retaining the large hydrophobicity difference between the two layers, inducing a strong push–pull effect to transport water from the PS to the PAN layer.
Description: This document is the Accepted Manuscript version of a Published Work that appeared in final form in [ACS Applied Materials & Interfaces], copyright © American Chemical Society after peer review and technical editing by the publisher. The final edited and published work can be found at: http://dx.doi.org/10.1021/am503417w
Version: Accepted for publication
DOI: 10.1021/am503417w
URI: https://dspace.lboro.ac.uk/2134/16070
Publisher Link: http://dx.doi.org/10.1021/am503417w
ISSN: 1944-8244
Appears in Collections:Published Articles (Materials)

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