Physicochemical studies of octadecyl-trimethyl-ammonium bromide: a critical assessment of its solution behavior with reference to formation of micelle, and microemulsion with n-butanol and n-heptane.

doi:10.1021/JP074748G

Paper

Physicochemical studies of octadecyl-trimethyl-ammonium bromide: a critical assessment of its solution behavior with reference to formation of micelle, and microemulsion with n-butanol and n-heptane.

Published Nov 30, 2007 · Kajari Maiti, I. Chakraborty, S. Bhattacharya

The journal of physical chemistry. B

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41

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Abstract

Octadecyl-trimethyl-ammonium bromide (C18TAB) is a much less studied representative in the alkyltrimethylammonium halide surfactant series. A comprehensive study of its normal and reverse micelle (microemulsion) formation has been herein conducted by the methods of conductometry, tensiometry, fluorimetry, and microcalorimetry. The energetics of its air/liquid interfacial adsorption and self-association in aqueous solution have been examined. The phase behavior of its combinations with water, n-butanol, and n-heptane in the formation of microemulsions have been investigated with identification of a variety of phases. The energetics of formation of water dispersion in oil (w/o) has been evaluated from dilution experiments conducted at different temperatures. From the results, structural parameters of the droplets have been determined at different [water]/[surfactant] mole ratios (omega) and temperatures. The w/o dispersions have evidenced both volume- and temperature-induced conductance percolation. The results have been treated in light of the Scaling equations, and the associated parameters for the process have been determined. The activation energies for the temperature-induced percolation process of the w/o dispersion have been evaluated and assessed.

Study Snapshot

Octadecyl-trimethyl-ammonium bromide (C18TAB) shows potential as a surfactant for water dispersion in oil, with potential applications in oil-water separation processes.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

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Paper

Physicochemical studies of octadecyl-trimethyl-ammonium bromide: a critical assessment of its solution behavior with reference to formation of micelle, and microemulsion with n-butanol and n-heptane.

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References

Citations

Exploration of micellization and phase separation nature of surfactants in metformin hydrochloride + additives media: An experimental and DFT study

The study reveals that the aggregation and phase separation of surfactants in metformin hydrochloride + additives media are influenced by both hydrophobic and electrostatic interactions.

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Bile salt-derived nontoxic surface-active ionic liquids (SAILs) show improved amphiphilic characteristics, enhancing the solubility of organic compounds in water for potential uses in catalysis, drug delivery, and energy storage.

An alternative to the conventional dilution method using temperature changes to stabilize/destabilize reverse micelles containing cosurfactant

The proposed method for analyzing reverse micelles containing cosurfactants using temperature changes offers advantages over conventional dilution methods, reducing waste, experiment duration, and indicating endothermic or exothermic formation processes.

Anomalous Temperature-Controlled Concave-Convex Switching of Curved Oil-Water Menisci.

Temperature-tunable concave-convex shape switching in oil-water interfaces can be achieved through a reversible hydrophobic-hydrophilic transition of glass capillary walls, with implications in fluid engineering, biology, and beyond.

Effect of ionic liquid on the micellization behavior of bile salts in aqueous medium

Ionic liquids can reduce bile salts' critical micelle concentration, potentially benefiting both surfactants and ionic liquids in aqueous systems.

Polymer–mesoporous silica composites for drug release systems

Polymer-mesoporous silica composites show greater effectiveness in drug desorption (90%), making them attractive for oral multiparticulate formulations with modified release.

Interfacial and Aggregation Behavior of Dicarboxylic Amino Acid Based Surfactants in Combination with a Cationic Surfactant.

Dicarboxylic Amino Acid-based surfactants combined with a cationic surfactant exhibit spontaneous micellization, indicating potential for gel-based drug delivery and nanoparticle synthesis.

Interfacial properties and micellization of octadecyltrimethylammonium bromide in aqueous solution containing short chain alcohol and effect of chain length of alcohol

The presence of alcohol and its chain length alters the hydrophobic effect, electrostatic interaction, and presence of alcohol molecules at the air-liquid interface or in the micelle, affecting the interfacial or micellization behavior of octadecyltrimethylammonium bromide.

Physicochemical studies of octadecyl-trimethyl-ammonium bromide: a critical assessment of its solution behavior with reference to formation of micelle, and microemulsion with n-butanol and n-heptane.

Sign up to use Study Snapshot

References

Citations

Exploration of micellization and phase separation nature of surfactants in metformin hydrochloride + additives media: An experimental and DFT study

The study reveals that the aggregation and phase separation of surfactants in metformin hydrochloride + additives media are influenced by both hydrophobic and electrostatic interactions.

Interfacial and aggregation behavior of ionic liquid-bile salt conjugates

Bile salt-derived nontoxic surface-active ionic liquids (SAILs) show improved amphiphilic characteristics, enhancing the solubility of organic compounds in water for potential uses in catalysis, drug delivery, and energy storage.

An alternative to the conventional dilution method using temperature changes to stabilize/destabilize reverse micelles containing cosurfactant

The proposed method for analyzing reverse micelles containing cosurfactants using temperature changes offers advantages over conventional dilution methods, reducing waste, experiment duration, and indicating endothermic or exothermic formation processes.

Anomalous Temperature-Controlled Concave-Convex Switching of Curved Oil-Water Menisci.

Temperature-tunable concave-convex shape switching in oil-water interfaces can be achieved through a reversible hydrophobic-hydrophilic transition of glass capillary walls, with implications in fluid engineering, biology, and beyond.

Effect of ionic liquid on the micellization behavior of bile salts in aqueous medium

Ionic liquids can reduce bile salts' critical micelle concentration, potentially benefiting both surfactants and ionic liquids in aqueous systems.

Polymer–mesoporous silica composites for drug release systems

Polymer-mesoporous silica composites show greater effectiveness in drug desorption (90%), making them attractive for oral multiparticulate formulations with modified release.

Interfacial and Aggregation Behavior of Dicarboxylic Amino Acid Based Surfactants in Combination with a Cationic Surfactant.

Dicarboxylic Amino Acid-based surfactants combined with a cationic surfactant exhibit spontaneous micellization, indicating potential for gel-based drug delivery and nanoparticle synthesis.

Interfacial properties and micellization of octadecyltrimethylammonium bromide in aqueous solution containing short chain alcohol and effect of chain length of alcohol

The presence of alcohol and its chain length alters the hydrophobic effect, electrostatic interaction, and presence of alcohol molecules at the air-liquid interface or in the micelle, affecting the interfacial or micellization behavior of octadecyltrimethylammonium bromide.

Exploration of micellization and phase separation nature of surfactants in metformin hydrochloride + additives media: An experimental and DFT study