Surface characterization of NH4PAA-stabilized zirconia suspensions

被引：26

作者：

Wang, J ^{[1
]}

Gao, L ^{[1
]}

Sun, J ^{[1
]}

Li, Q ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 1999年 / 213卷 / 02期

关键词：

surface property; zirconia; suspensions; polyelectrolytes; dispersant;

D O I：

10.1006/jcis.1999.6138

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ammonium polyacrylate (NH(4)PAA) stabilized yttria-doped (3 mol%) tetragonal zirconia (Y-TZP) aqueous suspensions were prepared, Surface chemistry of the suspension was investigated by a variety of techniques. Isotherm adsorption of dispersants on ZrO2 particles demonstrated an optimum coverage of 0.25 mg/g at pH 10, The isoelectric point (IEP) of ZrO2 suspensions was shifted to low pH regions with the presence of NH(4)PAA. Scanning auger microscopy (SAM) and FTIR and UV spectrophotometry were employed to determine the surface properties of ZrO2 suspensions, which confirmed that the surface Zr-O bonds were affected by the adsorbed polymers. Atomic force microscopy (AFM) analysis indicated that the interactions between particles were evidently influenced by polymer dispersants. (C) 1999 Academic Press.

引用

页码：552 / 556

页数：5

共 13 条

[1] Processing of aqueous alpha-Al2O3, alpha-SiO2 and alpha-SiC suspensions with polyelectrolytes. [J].