Interaction between dissolved Ba2+ and PAA-NH4 dispersant in aqueous barium titanate suspensions

Chia Chen Li; Jau Ho Jean; C. A. Randall

doi:10.1111/j.1151-2916.2002.tb00295.x

Interaction between dissolved Ba²⁺ and PAA-NH₄ dispersant in aqueous barium titanate suspensions

Chia Chen Li
, Jau Ho Jean
, C. A. Randall

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

The interaction between dissolved Ba²⁺ and dissociated ammonium salt of poly(acrylic acid) (PAA-NH₄) in aqueous suspension has been studied. The dissolved Ba²⁺ causes flocculation of dissociated PAA-NH₄, thus degrading its dispersing effectiveness in aqueous BaTiO₃ suspensions. The concentration of PAA-NH₄ required to stabilize aqueous BaTiO₃ suspension increases with increasing Ba²⁺ concentration at a given pH. A stability map, which is determined by a rheological study, is constructed to describe the amount of PAA-NH₄ required to have well-dispersed aqueous BaTiO₃ suspensions as a function of Ba²⁺ concentrations at different pH values.

Original language	English (US)
Pages (from-to)	1449-1455
Number of pages	7
Journal	Journal of the American Ceramic Society
Volume	85
Issue number	6
DOIs	https://doi.org/10.1111/j.1151-2916.2002.tb00295.x
State	Published - Jun 2002

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Materials Chemistry

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10.1111/j.1151-2916.2002.tb00295.x

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title = "Interaction between dissolved Ba2+ and PAA-NH4 dispersant in aqueous barium titanate suspensions",

abstract = "The interaction between dissolved Ba2+ and dissociated ammonium salt of poly(acrylic acid) (PAA-NH4) in aqueous suspension has been studied. The dissolved Ba2+ causes flocculation of dissociated PAA-NH4, thus degrading its dispersing effectiveness in aqueous BaTiO3 suspensions. The concentration of PAA-NH4 required to stabilize aqueous BaTiO3 suspension increases with increasing Ba2+ concentration at a given pH. A stability map, which is determined by a rheological study, is constructed to describe the amount of PAA-NH4 required to have well-dispersed aqueous BaTiO3 suspensions as a function of Ba2+ concentrations at different pH values.",

author = "Li, \{Chia Chen\} and Jean, \{Jau Ho\} and Randall, \{C. A.\}",

year = "2002",

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journal = "Journal of the American Ceramic Society",

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T1 - Interaction between dissolved Ba2+ and PAA-NH4 dispersant in aqueous barium titanate suspensions

AU - Li, Chia Chen

AU - Jean, Jau Ho

AU - Randall, C. A.

PY - 2002/6

Y1 - 2002/6

N2 - The interaction between dissolved Ba2+ and dissociated ammonium salt of poly(acrylic acid) (PAA-NH4) in aqueous suspension has been studied. The dissolved Ba2+ causes flocculation of dissociated PAA-NH4, thus degrading its dispersing effectiveness in aqueous BaTiO3 suspensions. The concentration of PAA-NH4 required to stabilize aqueous BaTiO3 suspension increases with increasing Ba2+ concentration at a given pH. A stability map, which is determined by a rheological study, is constructed to describe the amount of PAA-NH4 required to have well-dispersed aqueous BaTiO3 suspensions as a function of Ba2+ concentrations at different pH values.

AB - The interaction between dissolved Ba2+ and dissociated ammonium salt of poly(acrylic acid) (PAA-NH4) in aqueous suspension has been studied. The dissolved Ba2+ causes flocculation of dissociated PAA-NH4, thus degrading its dispersing effectiveness in aqueous BaTiO3 suspensions. The concentration of PAA-NH4 required to stabilize aqueous BaTiO3 suspension increases with increasing Ba2+ concentration at a given pH. A stability map, which is determined by a rheological study, is constructed to describe the amount of PAA-NH4 required to have well-dispersed aqueous BaTiO3 suspensions as a function of Ba2+ concentrations at different pH values.

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M3 - Article

AN - SCOPUS:0036607264

SN - 0002-7820

VL - 85

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JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 6

ER -

Interaction between dissolved Ba²⁺ and PAA-NH₄ dispersant in aqueous barium titanate suspensions

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