Clouding Behavior and Thermodynamic Study of Nonionic Surfactants in Presence of Additives

被引：46

作者：

Parikh, Jigisha ^{[1
]}

Rathore, Jitendra ^{[1
]}

Bhatt, Darshak ^{[2
]}

Desai, Meghal ^{[1
]}

机构：

[1] Sardar Vallabhbhai Natl Inst Technol, Dept Chem Engn, Surat 395007, Gujarat, India

[2] Sardar Vallabhbhai Natl Inst Technol, Dept Appl Chem, Surat 395007, Gujarat, India

来源：

JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY | 2013年 / 34卷 / 10期

关键词：

Additive; cloud point; thermodynamic parameters; Triton X-100; Triton X-114; ORGANIC ADDITIVES; AMPHIPHILIC DRUG; POINT;

D O I：

10.1080/01932691.2012.749183

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：

The present study investigates the effect of different additives on the cloud point (CP) of nonionic surfactants Triton X-100 (TX-100) and Triton X-114 (TX-114) in aqueous solutions. The thermodynamic parameters of these mixtures were calculated at different additive concentrations. The cloud point of nonionic surfactants TX-100 and TX-114 decreased with the increment of electrolyte concentrations and increased with alcohol concentrations. The standard Gibbs free energy was found to be positive for both the surfactants, whereas the enthalpy and the entropy of the clouding phenomenon were found to be positive with alcohols and negative with electrolytes. The overall clouding process was endothermic for alcohols and exothermic for electrolytes.

引用

页码：1392 / 1398

页数：7

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