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Wetting of aqueous solutions of organic binder (PVA) on sapphire and fused quartz

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Abstract

Wetting by PVA aqueous solution of sapphire and fused quartz was studied by measuring the contact angle of a sessile drop placed on them. At a given temperature, the contact angle increased with increasing concentration of solution up to 2% and became rather constant for further increase in concentration. The contact angle also increased with increasing temperature. At temperatures over 70° C, the contact angle for sapphire exceeded 90° for PVA aqueous solutions of concentration over 2%. The effects of temperature and concentration on wetting for fused quartz were similar to those found for sapphire. These results are discussed in terms of bulk thermodynamics.

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Ando, K., Kato, Z., Uchida, N. et al. Wetting of aqueous solutions of organic binder (PVA) on sapphire and fused quartz. J Mater Sci 24, 4048–4051 (1989). https://doi.org/10.1007/BF01168972

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  • DOI: https://doi.org/10.1007/BF01168972

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