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Tailoring surface hydrophilicity of porous electrospun nanofibers to enhance capillary and push-pull effects for moisture wicking

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posted on 15.10.2014 by Yuliang Dong, Junhua Kong, Si Lei Phua, Chenyang Zhao, Noreen Thomas, Xuehong Lu
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.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Published in

ACS APPLIED MATERIALS & INTERFACES

Volume

6

Issue

16

Pages

14087 - 14095 (9)

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.

Publisher

© American Chemical Society

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2014

Notes

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

ISSN

1944-8244

eISSN

1944-8252

Language

en

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