Parametric Optimization and Thermo-dynamic Studies on the Influence of Electrolytes on Sodium Salicylate in Aqueous Solution
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Kiran Pawar
, Meghal A. Desai und Jigisha Parikh
Abstract
Hydrotropes (amphiphiles) start to aggregate at a certain minimum concentration known as the minimum hydrotrope concentration (MHC), above which an appreciable solubilization of insoluble compounds in aqueous solution is observed. However, the MHC values are very high, thus, limiting the applications of hydrotropes. The salts are found to increase the association tendency of hydrotropes and reduction in the MHC. The present study discusses the effect of various electrolytes (Na+, Mg2+ and K+ series) on the behavior of sodium salicylate at different temperatures. Design of experiment was employed to optimize the process parameters. Furthermore, thermodynamic parameters were investigated to observe the stability of the aggregates at higher temperatures.
Kurzfassung
Hydrotope (Amphiphile) beginnen ab einer bestimmten Minimumkonzentration, die als Minimumhydroptrop-Konzentration (MHK) bekannt ist, zu aggregieren. Oberhalb dieser Konzentration wird eine beträchtliche Löslichkeit von unlöslichen Verbindungen in wässriger Lösung festgestellt. Die MHK-Werte sind jedoch sehr hoch, was die Anwendung von Hydrotropen einschränkt. Es wurden Salze gefunden, die die Assoziation von Hydrotropen steigern und die MHK herabsetzen. Die vorliegende Untersuchung diskutiert den Einfluss verschiedener Elektrolyte (Na+-, Mg2+- und K+-Salze) auf das Verhalten von Natriumsalicylat bei unterschiedlichen Temperaturen. Ein Versuchsdesignverfahren wurde für die Optimierung der Verfahrensparameter verwendet. Des Weiteren wurden thermodynamische Parameter untersucht, um die Stabilität der Aggregate bei höheren Temperaturen zu beobachten.
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© 2013, Carl Hanser Publisher, Munich
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Artikel in diesem Heft
- Contents/Inhalt
- Contents
- Abstracts
- Abstracts
- Application
- Surface and Interfacial Performance of Unsaturated Octadecyl Carboxybetaine
- Synthesis of Thermoresponsive SiO2 Composite Modified by Nonionic Organosilicone Surfactant
- Combination of Best Promoter and Micellar Catalyst for Chromic Acid Oxidation of D-Mannitol to Mannose in Aqueous Media
- Antimicrobial Efficacy of Hygiene Rinsers under Consumer-Related Conditions
- Environmental Chemistry
- How Effective are Alternative Ways of Laundry Washing?
- Novel Surfactants
- Foaming Behavior of Dialdehyde Starch Schiff-base Derivatives
- Novel Diphenyl Methane Based Quaternary Ammonium Surfactants: Synthesis, Surface Properties and Antimicrobial Activity
- Physical Chemistry
- Interaction of Cationic CTAB Surfactant with Curcumin, an Anticarcinogenic Drug: Spectroscopic Investigation
- Parametric Optimization and Thermo-dynamic Studies on the Influence of Electrolytes on Sodium Salicylate in Aqueous Solution
- Effect of Cationic Surfactant on the Oxidation of Galactose by N-Bromophthalimide in the Presence of Acidic Medium: A Kinetic and Mechanistic Study
- News
- Retirement of Professor Ulrich Buller