Polyzirconoxane (PZO) was prepared by a one-pot reaction of zirconium oxychloride octahydrate (ZOC) with acetylacetone. Triethylamine was added dropwise into a mixture of zirconium oxychloride octahydrate, acetylacetone, and methanol to get stable PZO. The PZO polymer was characterized by the techniques of Fourier transform infrared spectra (FTIR), nuclear magnetic resonance (1H-NMR), and gel permeation chromatography (GPC). The precursor was air-stable and soluble in common organic solvents. The thermal behavior of PZO consisted of three stages, namely, loss of water and solvent, decomposition of organic residues, and dehydroxylation of ZrOH into ZrO2. Pyrolysis of this polymer at 1000°C in nitrogen provides nanosized ZrO2 with spherical morphology and size of 50 – 100 nm.
Refractories and Industrial Ceramics – Springer Journals
Published: Jun 5, 2014
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