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Dispersion Stabilization of Yttria-Stabilized Zirconia Slurry for Spray Coating by PVB Polymeric Adsorption

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In this study, the dispersion stabilization characteristics of the poly(vinyl butyral) (PVB) adsorbed yttria-stabilized zirconia (YSZ) was investigated. The addition of PVB showed remarkable dispersion effect to the YSZ slurry prepared with isopropyl alcohol (IPA) and toluene as a bi-solvent system, PVB as a dispersant medium and YSZ powders. The agglomerated YSZ particle size decreased with PVB addition until 3 wt% and PVB added more than 3 wt% acted as a binder. The smallest particle size was obtained at 3 wt% PVB and the more PVB addition causes reflocculation of YSZ particles. The relative amount of adsorbed PVB onto the YSZ surface increased with increasing PVB contents. It turns out that the YSZ slurry dispersion stabilization was improved by the interaction between the hydroxyl group of YSZ surface and O–H group in PVB which is newly formed Zr–O–C bonding.
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Document Type: Research Article

Publication date: 2011-08-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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