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Direct measurement of the elasticity and fracture properties of electrospun polyacrylonitrile/halloysite fibrous mesh in water

Lookup NU author(s): Dr Kheng-Lim GohORCiD, Dr Vladimir Zivkovic

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).

Abstract

The objectives of this research are to characterize the effects of hydration on the elasticity and fracture properties of electrospun polyacrylonitrile (PAN) and PAN/halloysite meshes and to use the information for design analysis for water filtration application. Electron micrographs of these meshes revealed pore diameters ranging 1–7 μm. Direct measurement of the mesh stiffness and strength in water revealed that PAN/halloysite meshes were stiffer and stronger than PAN meshes. Solution diffusion model predicted that PAN/halloysite mesh can support a water flux of 2.4 times higher than PAN mesh without breaking during desalination. However, wet meshes were weaker and less stiff than dry meshes. This was attributed to a reduced effectiveness for stress transfer between fibres, caused by the presence of water in (and swelling of) the inter-fibre space, as reflected by a reduction in the volume fraction of the respective PAN and halloysite components.

Publication metadata

Author(s): Goh KL, Makaremi M, Pasbakhsh P, DeSilva R, Zivkovic V

Publication type: Article

Publication status: Published

Journal: Polymer Testing

Year: 2018

Volume: 72

Pages: 11-23

Print publication date: 01/12/2018

Online publication date: 22/09/2018

Acceptance date: 21/09/2018

Date deposited: 25/09/2018

ISSN (print): 0142-9418

ISSN (electronic): 1873-2348

Publisher: Elsevier Ltd

URL: https://doi.org/10.1016/j.polymertesting.2018.09.026

DOI: 10.1016/j.polymertesting.2018.09.026

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