Adsorption of amino-acid based surfactants at the air-water interface
There has been a recent revival of interest in preparation of surfactants from natural starting materials as they are more biodegradable and thus more environmentally friendly than traditional surfactants. We have begun a research project aimed at using a grain residue from brewing, containing the amino acids glycine, proline and glutamine as a source of polar components for surfactant synthesis. Little has been done to characterise these surfactants so far, so we are studying these materials both as pure surfactants and importantly as mixtures, with the goal of avoiding costly separation steps both before synthesis and before use. Here we wish to continue our studies on these surfactants by studying the surface adsorbed layers formed by soluble C12, C14 and C16 chain surfactants with these amino acid headgroups alone and in binary mixtures. These experiments will provide information on the interfacial properties of these materials which are important for emulsification and cleaning applications.
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Karen J Edler; ARNOLD Tom; ELSTONE Naomi; Armando Maestro; Julien Schmitt and THOMPSON Joseph. (2018). Adsorption of amino-acid based surfactants at the air-water interface. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-13-747
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