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Article Dans Une Revue Carbohydrate Polymers Année : 2017

Monitoring the architecture of anionic kappa-carrageenan/cationic glycine betaine amide surfactant assemblies by dilution: A multiscale approach

Résumé

The interaction between glycine betaine-based cationic surfactant and algal polysaccharide kappa-carrageenan was studied by investigating the dilution effect of the surfactant/polymer assemblies driven by electrostatic interactions. Two aqueous solutions of cationic surfactant and kappa-carrageenan at two molar ratios (3.5 and 0.8) diluted with factors of 5 and 10 times, were tested by various analytical methods including a multiscale observation by Transmission Electron Microscopy (TEM) and Laser Scanning Confocal Microscopy (LSCM) to understand the solution behavior of surfactant and oppositely charged polymer at both nano- and micrometer scale. Raman spectroscopy as well as confocal Raman imaging were applied to give Supplementary information about the surfactant/polysaccharide interactions and the distribution of assemblies. These analyses confirmed the formation of singular hybrid surfactant/polymer nano-, microobjects and they revealed the influence of dilution on the nanostructures. These results give an insight of the mechanism of the dilution effect on surfactant/polymer assemblies that could be valuable in pharmaceutical formulations, food and cosmetics fields. (C) 2016 Elsevier Ltd. All rights reserved.
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hal-01604695 , version 1 (02-10-2017)

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Claire Gaillard, Y. Wang, R. Covis, T. Vives, Maud Benoit, et al.. Monitoring the architecture of anionic kappa-carrageenan/cationic glycine betaine amide surfactant assemblies by dilution: A multiscale approach. Carbohydrate Polymers, 2017, 155, pp.49-60. ⟨10.1016/j.carbpol.2016.08.027⟩. ⟨hal-01604695⟩
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