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Title: Effects of calcination temperature on electrospun silica fibers
Authors: Pramuansub N.
Jittangprasert P.
Wanakamol P.
Keywords: Applied voltages
Average diameter
Calcination temperature
Electrospun silica
Long fiber
Mechanical integrity
Organic residuals
Precursor solutions
Scanning electron microscopes
Silica content
Silica fibers
Sol-Gel Reaction
Tip-to-collector distance
Viscous solution
Fourier transform infrared spectroscopy
Hydrochloric acid
Scanning electron microscopy
Issue Date: 2012
Abstract: Silica fibers have been fabricated via sol-gel reaction and electrospinning. The precursor solution was prepared from tetraethyl- orthosilicate (TEOS), ethanol and aqueous hydrochloric acid. The viscous solution was electrospun at 15kV applied voltage and 20 cm tip-to-collector distance. The process yielded nonwoven sheet of silica fibers with good mechanical integrity. The silica fiber specimens were calcined at different temperatures: 400°C, 600°C and 800°C. Scanning electron microscope (SEM) observation reveals smooth and long fibers with average diameter below 0.5μm for all samples, both as spun and calcined. Fourier transform infrared spectroscopy (FT-IR) spectra show effects of calcination temperature on chemical structure of the fibers. Calcination results in the removal of organic residuals and leaving mostly silica content. © (2012) Trans Tech Publications.
ISSN: 10226680
Appears in Collections:Scopus 1983-2021

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