Nanocrystalline Yttria-Stabilized Zirconia Fibers from Plant Fibers and their Polymer Composites |
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| Authors: | Rabindra N. Das Sanjukta Nad Panchanan Pramanik |
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| Affiliation: | Department of Chemistry, Indian Institute of Technology, Kharagpur, West Bengal 721302, India;
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853-1501 |
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| Abstract: | Nanocrystalline zirconia–8-mol% yttria (yttria-stabilized zirconia (YSZ): ZrO2–8-m% Y2O3) fibers have been prepared from aqueous poly vinyl alcohol (PVA)–zirconium oxy nitrate solution and jute (plant fiber). Soluble Zr and Y ions in PVA solution formed a uniform coating on the surface of jute once it dried completely. Slow hydrolysis of zirconium ion with ammonium hydroxide deposited zirconium hydroxide on the jute surface. Decomposition of the dried zirconium hydroxide-coated jute at high temperature (1200°C/2 h) resulted in the formation of single-phase, nanocrystalline cubic-YSZ with the corresponding average X-ray crystallite size 30–35 nm. Heat-treated fibers have been characterized by X-ray diffraction and scanning electron microscopy. We also prepared polymer composites by incorporating chopped, ground YSZ fibers into epoxy matrix and investigated polymer/fiber interface by transmission electron microscopy analysis. |
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