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

被引：0

作者：

Ying, Kuo-Liang ^{[1
]}

Hsu, Kung-Chung ^{[1
]}

Wei, Wen-Cheng J. ^{[2
]}

机构：

[1] Department of Chemistry, National Taiwan Normal University, Taipei 116, Taiwan

[2] Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan

来源：

Journal of Applied Polymer Science | 2006年 / 100卷 / 02期

关键词：

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. © 2006 Wiley Periodicals; Inc;

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摘要：

Journal article (JA)

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页码：886 / 891