Study of Nano sized Surfactant Aggregates and their Applications in the Bio-Physical Engineered Assemblies

International Journal of Applied Chemistry

© 2018 by SSRG - IJAC Journal

Volume 5 Issue 2

Year of Publication : 2018

Authors : Shruti Srivastava and G.Vani Padmaja

10.14445/23939133/IJAC-V5I2P101

How to Cite?

Shruti Srivastava and G.Vani Padmaja, "Study of Nano sized Surfactant Aggregates and their Applications in the Bio-Physical Engineered Assemblies," SSRG International Journal of Applied Chemistry, vol. 5,  no. 2, pp. 1-6, 2018. Crossref, https://doi.org/10.14445/23939133/IJAC-V5I2P101

Abstract:

This manuscript mainly deals with some models and concepts that are used to characterize the aggregational behavior of surfactant molecules. Thermodynamic and molecular approaches are also outlined in some detail in this paper. Micellar colloids are distinguished from other colloids by their association-dissociation equilibrium in solution between monomers, counter-ions and micelles. Surfactant solutions are unique solvent systems because the surfactant molecules form micelles in aqueous and non-aqueous solvents by self-assembly under the hydrophobic interaction with solvent molecules. According to classical thermodynamics, the standard Gibb’s energy of formation of micelles at fixed temperature and pressure can be related to the critical micelle concentration (CMC). This relation is different for two models which are widely used to describe micelle formation, namely the Phase Separation and the Mass Action Models. The concept of molecular packing parameter is widely used to explain, rationalize and even predict molecular self-assembly in surfactant solutions. A particular value of the molecular packing parameter can be translated via simple geometrical relations into specific shape and size of the equilibrium aggregate. Surfactant solutions have attracted much attention from academia and industry because they play an important role in different industrial areas, e.g. chemical and oil industry, pharmaceutical and bio-industries, paper, emulsions, food and film industries.

Keywords:

Self assembly, CMC, Surfactant, Phase separation, Pharmaceuticals etc.

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