Oxide Ceramic Nano/Microfibers Prepared by Needle-Less Electrospinning - Materials for Fiber Reinforced Composites

Abstract:

Nano/microfibers are already widely used as the reinforcements in various types of advanced composites for reducing weight, improving specific properties like hardness, fracture toughness and other mechanical ones. This contribution describes the preparation of the titanium dioxide nano/microfibers by needle-less electrospinning, along with a detailed characterization of the obtained polycrystalline ceramics. For spinning solutions preparation the polyvinylpyrrolidone (PVP), titanium isopropoxide (TTIP), ethanol and acetic acid were used. Influence of the ceramic precursor concentration in the spinning solution showed that decreasing the concentration of TTIP from 30 to 10 wt.% has no effect on the precursor polymer fibers shape. However, it causes deviation from the fibers oval shape (in the cross-section) up to the formation of solid ribbons or even multilayered porous ribbons. Heat treatment temperature defined the phase composition of the obtained oxide ceramics – stabile polycrystalline rutile fibers were obtained at 600 °C.

• Periodical: Key Engineering Materials (Volume 784)
• Pages: 114-119
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.784.114
• Online since: October 2018
• Authors: Ivan Shepa*, Erika Mudra, Marek Vojtko, Maria Podobova, Jan Dusza
• Keywords: Composite, Nano/Microfibers, Needle-Less Electrospinning, Oxide Ceramics

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