The Effect on Solution Properties of Replacing a Hydrogen Atom with a Methyl Group in a Surfactant

Author:

Raykundaliya Nirav1,Bordes Romain2,Holmberg Krister2,Wu Jun3,Somasundaran Ponisseril3,Shah Dinesh O.14

Affiliation:

1. 1Shah-Schulman Center for Surface Science and Nanotechnology, Dharmsinh Desai University, Nadiad, India

2. 2Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Goteborg, Sweden

3. 3Langmuir Center for Colloids and Interfaces, Columbia University, New York, USA

4. 4Department of Chemical Engineering and Department of Anesthesiology, University of Florida, Gainesville, USA

Abstract

AbstractTwo surfactants, namely, dodecanoylglycinate and dodecanoylsarcosinate, differing only in a methyl group vs. a hydrogen atom on the amide nitrogen, have been studied with respect to solution behavior and adsorption at the air–water, oil-water and calcium carbonate-water interfaces. It was found that the ability of the glycinate surfactant of forming intermolecular hydrogen bonds via the amide group leads to tighter molecular packing, which greatly influenced the behavior at interfaces. Based on this molecular observation, potential applications were considered and emulsification, foaming and wetting tests were carried out. It could be concluded from this work that a minor change in the structure of a surfactant molecule can be very significant for technological systems and processes.

Publisher

Walter de Gruyter GmbH

Subject

Condensed Matter Physics,General Chemical Engineering,General Chemistry

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