Investigations on the mechanism of aqueous solubility increase caused by some hydrotropes

被引：78

作者：

da Silva, RC ^{[1
]}

Spitzer, M ^{[1
]}

da Silva, LHM ^{[1
]}

Loh, W ^{[1
]}

机构：

[1] Univ Estadual Campinas, Inst Quim, BR-13083970 Campinas, SP, Brazil

来源：

THERMOCHIMICA ACTA | 1999年 / 328卷 / 1-2期

基金：

巴西圣保罗研究基金会;

关键词：

aqueous solutions; solubility; hydrotropes; solute-solute interaction; self-association;

D O I：

10.1016/S0040-6031(98)00637-6

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The effects of nicotinamide, sodium p-toluenesulfonate and tetrapropyl and tetraburyl ammonium bromides on the cloud points of non-ionic surfactant solutions and on the solubility of an apolar dye were determined. They all revealed a continuous effect of increased solubility as the additive concentration increases. Surface tension and heats of dilution were also measured for these solutions and the results support the view of a continuous hydrotrope self-association, which is then proposed as a key process to their ability of increasing aqueous solubility of apolar compounds. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：161 / 167

页数：7

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