Optimization of Concentration and Applied Voltage of Electrospun Zein Nanofibers
SSRN Electronic Journal
2021
- 483Usage
- 4Captures
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Article Description
Electrospinning is amongst the flexible techniques used to obtain ultrafine polymer fibres with a range of 10 μm to 100 nm. In this study, applied voltage and concentration were optimized to fabricate zein nanofibers using the electrospinning technique. The electrospun nanofibers morphology, diameter and structure, were investigated by scanning electron microscopy (SEM), X-ray diffraction, Fourier transform infrared (FT-IR) and thermogravimetric analysis (TGA). The SEM images showed morphologies of the nanofibers affected by the concentration of the prepared zein solutions from 20 wt%, 25 wt% and 30 wt% and voltage variation from 15 kV, 20 kV and 25kV. The results showed that the concentration, average fibre diameter, and voltage increment influenced fibre size distribution and morphology. The XRD showed a broad, amorphous peak at 2θ = 19.5º for the different concentrations of zein nanofibres used, illustrating the retained structural conformation. FT-IR spectra confirmed the functional groups present in zein nanofibers, and the TGA thermograms showed no significant change on the zein nanofibres.
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