Journal
MATERIALS TODAY-PROCEEDINGS
Volume 17, Issue -, Pages 574-583Publisher
ELSEVIER
DOI: 10.1016/j.matpr.2019.06.337
Keywords
electrospinning; polyacriylic acid; microfibers
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Funding
- Universiti Teknologi MARA (UiTM) Shah Alam [600-IRMI/GIP 5/3 (0039/2016), 600-IRMI/DANA 5/3/BESTARI (M) (017/2017), 600-IRMI/MyRA 5/3/BESTARI (021/2017)]
- University of Edinburgh [100-IRMI/INT 16/6/2 (010/2017)]
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Electrospinning of polyacrylic acid (PAA) was used to investigate electrical properties and morphology of the fabricated electrospun microfibers as the function of solute concentration. The mean diameter of the fibers increased from 301 to 682 nm with increasing PAA concentrations from 4 to 7 wt %, respectively due to increasing of polymer solution viscosity. At 3 wt % of PAA concentration, the average fiber diameter was higher than 4.0 and 5.0 wt% PAA because the fiber sizes were not homogenous as spindle and junctions were formed. The porosity of 6 wt % electrospun PAA was the highest i.e. 5.89% with the contact angle of 61 degrees which indicated its capability to retain high water or moisture on the surface. The conductivity of the dried electrospun PAA microfiber increased from 1.01x10(-6) to 2.63x10(-5) S/m with increasing of PAA concentrations from 3 to 6 wt% respectively because larger fiber diameter provided more porous structure to retain moisture. Crown Copyright (C) 2019 Published by Elsevier Ltd. All rights reserved.
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