An amphoteric water-soluble copolymer. II. Effect of its molecular weight on the dispersion of barium titanate in water

Kuo Liang Ying; Kung Chung Hsu; Wen Cheng J. Wei

doi:10.1002/app.22988

An amphoteric water-soluble copolymer. II. Effect of its molecular weight on the dispersion of barium titanate in water

Kuo Liang Ying, Kung Chung Hsu^*, Wen Cheng J. Wei

^*Corresponding author for this work

Department of Chemistry

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

3 Citations (Scopus)

Abstract

An amphoteric water-soluble copolymer, that is, polyacrylamide/(α-N,N-dimethyl-N-acryloyloxyethyl)ammonium ethanate (PAAM/DAAE) was synthesized and it showed the ability to disperse BaTiO ₃ (BT) particles in aqueous solutions. In this work, the effect of molecular weight of this polymer on the dispersing properties was further examined. The results indicate that the effectiveness of three polymer samples with different molecular weights in the dispersion of BT particles is P2 (M _w = 1.1 × 10⁵) > P1 (M_w = 1.2 × 10⁴) > P3 (M_w = 3.0 × 10⁵). Apparently, P2 is most effective in dispersing the particles, reducing the viscosity of the suspensions, and obtaining highest green and sintered densities. This is attributed to the highest adsorption of this polymer onto BT powder, and causes strongest electrostatic and steric repulsions.

Original language	English
Pages (from-to)	886-891
Number of pages	6
Journal	Journal of Applied Polymer Science
Volume	100
Issue number	2
DOIs	https://doi.org/10.1002/app.22988
Publication status	Published - 2006 Apr 15

Keywords

Adsorption
BaTiO
Dispersion
Molecular weight
PAAM/DAAE

ASJC Scopus subject areas

General Chemistry
Surfaces, Coatings and Films
Polymers and Plastics
Materials Chemistry

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10.1002/app.22988

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title = "An amphoteric water-soluble copolymer. II. Effect of its molecular weight on the dispersion of barium titanate in water",

abstract = "An amphoteric water-soluble copolymer, that is, polyacrylamide/(α-N,N-dimethyl-N-acryloyloxyethyl)ammonium ethanate (PAAM/DAAE) was synthesized and it showed the ability to disperse BaTiO 3 (BT) particles in aqueous solutions. In this work, the effect of molecular weight of this polymer on the dispersing properties was further examined. The results indicate that the effectiveness of three polymer samples with different molecular weights in the dispersion of BT particles is P2 (M w = 1.1 × 105) > P1 (Mw = 1.2 × 104) > P3 (Mw = 3.0 × 105). Apparently, P2 is most effective in dispersing the particles, reducing the viscosity of the suspensions, and obtaining highest green and sintered densities. This is attributed to the highest adsorption of this polymer onto BT powder, and causes strongest electrostatic and steric repulsions.",

keywords = "Adsorption, BaTiO, Dispersion, Molecular weight, PAAM/DAAE",

author = "Ying, {Kuo Liang} and Hsu, {Kung Chung} and Wei, {Wen Cheng J.}",

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T1 - An amphoteric water-soluble copolymer. II. Effect of its molecular weight on the dispersion of barium titanate in water

AU - Ying, Kuo Liang

AU - Hsu, Kung Chung

AU - Wei, Wen Cheng J.

PY - 2006/4/15

Y1 - 2006/4/15

N2 - An amphoteric water-soluble copolymer, that is, polyacrylamide/(α-N,N-dimethyl-N-acryloyloxyethyl)ammonium ethanate (PAAM/DAAE) was synthesized and it showed the ability to disperse BaTiO 3 (BT) particles in aqueous solutions. In this work, the effect of molecular weight of this polymer on the dispersing properties was further examined. The results indicate that the effectiveness of three polymer samples with different molecular weights in the dispersion of BT particles is P2 (M w = 1.1 × 105) > P1 (Mw = 1.2 × 104) > P3 (Mw = 3.0 × 105). Apparently, P2 is most effective in dispersing the particles, reducing the viscosity of the suspensions, and obtaining highest green and sintered densities. This is attributed to the highest adsorption of this polymer onto BT powder, and causes strongest electrostatic and steric repulsions.

AB - An amphoteric water-soluble copolymer, that is, polyacrylamide/(α-N,N-dimethyl-N-acryloyloxyethyl)ammonium ethanate (PAAM/DAAE) was synthesized and it showed the ability to disperse BaTiO 3 (BT) particles in aqueous solutions. In this work, the effect of molecular weight of this polymer on the dispersing properties was further examined. The results indicate that the effectiveness of three polymer samples with different molecular weights in the dispersion of BT particles is P2 (M w = 1.1 × 105) > P1 (Mw = 1.2 × 104) > P3 (Mw = 3.0 × 105). Apparently, P2 is most effective in dispersing the particles, reducing the viscosity of the suspensions, and obtaining highest green and sintered densities. This is attributed to the highest adsorption of this polymer onto BT powder, and causes strongest electrostatic and steric repulsions.

KW - Adsorption

KW - BaTiO

KW - Dispersion

KW - Molecular weight

KW - PAAM/DAAE

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JF - Journal of Applied Polymer Science

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An amphoteric water-soluble copolymer. II. Effect of its molecular weight on the dispersion of barium titanate in water

Abstract

Keywords

ASJC Scopus subject areas

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