Effect of pH on the viscosity of titanium dioxide aqueous dispersions with carboxylic acids

被引：30

作者：

Johnson, Abby M. ^{[1
]}

Trakhtenberg, Sofia ^{[1
]}

Cannon, Amy S. ^{[1
]}

Warner, John C. ^{[1
]}

机构：

[1] Univ Massachusetts Lowell, Ctr Green Chem, Lowell, MA 01854 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2007年 / 111卷 / 33期

关键词：

D O I：

10.1021/jp071398p

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：

Dispersions of titanium dioxide nanoparticles with terephthalic acid, isophthalic acid, salicylic acid, benzoic acid, and pyridine-2,5-dicarboxylic acid were prepared by aqueous grinding. The pH of the dispersions was adjusted by adding either HCl or NaOH, and the viscosity of the dispersions was measured. It was found that the viscosity of the system depends strongly on pH. The qualitative interpretation of the results based on the DLVO theory is presented. The evidence of the effect of bridging interactions on the viscosity of titanium dioxide-dicarboxylic acid dispersions is discussed.

引用

页码：8139 / 8146

页数：8

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