Fabrication and characterisation of chitosan/poly vinyl alcohol nanofibres via electrospinning

Talebian, S. and Afifi, A.M. and Khanlou, H.M. (2014) Fabrication and characterisation of chitosan/poly vinyl alcohol nanofibres via electrospinning. Materials Research Innovations, 18 (S6). pp. 331-335.

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In this study, chitosan nanofibres were fabricated using electrospinning process. Initially, chitosan powders were further deacetylated with sodium hydroxide to deprotonate the polymer chains and decrease the molecular weight. Subsequently, the treated chitosan (5 wt-% in 90:10 acetic acid/water ratio) were mixed with poly vinyl alcohol (8 wt-% in water) at different ratios in order to facilitate the electrospinning through cross-links formation. Field-emission scanning electron microscopic images showed that 60:40 (chitosan/poly vinyl alcohol) ratio was the threshold for formation of beads (chitosan/poly vinyl alcohol >50:50 contains imperfections) and that increasing chitosan/poly vinyl alcohol ratio from 20:80 to 60:40 decreased the average diameter of fibres from 80 to 40 nm. Fourier transform infrared spectra proved the formation of chitosan/poly vinyl alcohol cross-linked nanofibres.

Item Type: Article
Uncontrolled Keywords: Chitosan; Poly vinyl alcohol; Nanofibres; Electrospinning; Deacetylation; Viscometry
Subjects: Q Science > Q Science (General)
Depositing User: MR Faizal II H
Date Deposited: 31 Dec 2015 00:40
Last Modified: 31 Dec 2015 00:40
URI: http://eprints.um.edu.my/id/eprint/15477

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