Dispersion of BaTi4O9 powders in aqueous solutions with PAMCOB copolymer

Tzu Min Chung; Kung Chung Hsu

doi:10.1016/j.ceramint.2011.07.004

Dispersion of BaTi₄O₉ powders in aqueous solutions with PAMCOB copolymer

Tzu Min Chung, Kung Chung Hsu^*

^*Corresponding author for this work

Department of Chemistry

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

1 Citation (Scopus)

Abstract

An anionic water-soluble copolymer, i.e., poly(acrylamide-co-4- carboxylamino-4-oxo-2-butenate) (PAMCOB) was used as a novel dispersant for aqueous BaTi₄O₉ (BT₄) slurries. The dispersing property of this copolymer was examined by means of rheology, sedimentation, and leached Ba²⁺ concentration measurements. The dielectric properties of BT₄ compacts were also measured. The results indicated that this copolymer can reduce the viscosity and stabilize the BT₄ slurries. Compared to a commercial dispersant, ammonium salt of polymethylacrylic acid (PMAAN), PAMCOB was as effective in preparing stabilized suspensions. More importantly, PAMCOB reduced the leached Ba²⁺ concentration. Consequently, the BT₄ compacts with this polymer showed higher dielectric constant and lower dielectric loss than those without any dispersant present.

Original language	English
Pages (from-to)	283-288
Number of pages	6
Journal	Ceramics International
Volume	38
Issue number	1
DOIs	https://doi.org/10.1016/j.ceramint.2011.07.004
Publication status	Published - 2012 Jan

Keywords

Anionic polyelectrolytes
BaTiO
Dispersion
Leached barium ions

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1016/j.ceramint.2011.07.004

Cite this

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title = "Dispersion of BaTi4O9 powders in aqueous solutions with PAMCOB copolymer",

abstract = "An anionic water-soluble copolymer, i.e., poly(acrylamide-co-4- carboxylamino-4-oxo-2-butenate) (PAMCOB) was used as a novel dispersant for aqueous BaTi4O9 (BT4) slurries. The dispersing property of this copolymer was examined by means of rheology, sedimentation, and leached Ba2+ concentration measurements. The dielectric properties of BT4 compacts were also measured. The results indicated that this copolymer can reduce the viscosity and stabilize the BT4 slurries. Compared to a commercial dispersant, ammonium salt of polymethylacrylic acid (PMAAN), PAMCOB was as effective in preparing stabilized suspensions. More importantly, PAMCOB reduced the leached Ba2+ concentration. Consequently, the BT4 compacts with this polymer showed higher dielectric constant and lower dielectric loss than those without any dispersant present.",

keywords = "Anionic polyelectrolytes, BaTiO, Dispersion, Leached barium ions",

author = "Chung, {Tzu Min} and Hsu, {Kung Chung}",

note = "Funding Information: The authors are grateful for the support of this work by the National Science Council of the Republic of China (Contract # NSC-98-2221-E-003-019 ). The authors also extend their gratitude to the Academic Paper Editing Clinic, NTNU.",

year = "2012",

month = jan,

doi = "10.1016/j.ceramint.2011.07.004",

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volume = "38",

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journal = "Ceramics International",

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AU - Chung, Tzu Min

AU - Hsu, Kung Chung

N1 - Funding Information: The authors are grateful for the support of this work by the National Science Council of the Republic of China (Contract # NSC-98-2221-E-003-019 ). The authors also extend their gratitude to the Academic Paper Editing Clinic, NTNU.

PY - 2012/1

Y1 - 2012/1

N2 - An anionic water-soluble copolymer, i.e., poly(acrylamide-co-4- carboxylamino-4-oxo-2-butenate) (PAMCOB) was used as a novel dispersant for aqueous BaTi4O9 (BT4) slurries. The dispersing property of this copolymer was examined by means of rheology, sedimentation, and leached Ba2+ concentration measurements. The dielectric properties of BT4 compacts were also measured. The results indicated that this copolymer can reduce the viscosity and stabilize the BT4 slurries. Compared to a commercial dispersant, ammonium salt of polymethylacrylic acid (PMAAN), PAMCOB was as effective in preparing stabilized suspensions. More importantly, PAMCOB reduced the leached Ba2+ concentration. Consequently, the BT4 compacts with this polymer showed higher dielectric constant and lower dielectric loss than those without any dispersant present.

AB - An anionic water-soluble copolymer, i.e., poly(acrylamide-co-4- carboxylamino-4-oxo-2-butenate) (PAMCOB) was used as a novel dispersant for aqueous BaTi4O9 (BT4) slurries. The dispersing property of this copolymer was examined by means of rheology, sedimentation, and leached Ba2+ concentration measurements. The dielectric properties of BT4 compacts were also measured. The results indicated that this copolymer can reduce the viscosity and stabilize the BT4 slurries. Compared to a commercial dispersant, ammonium salt of polymethylacrylic acid (PMAAN), PAMCOB was as effective in preparing stabilized suspensions. More importantly, PAMCOB reduced the leached Ba2+ concentration. Consequently, the BT4 compacts with this polymer showed higher dielectric constant and lower dielectric loss than those without any dispersant present.

KW - Anionic polyelectrolytes

KW - BaTiO

KW - Dispersion

KW - Leached barium ions

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