Monitoring the architecture of anionic κ-carrageenan/cationic glycine betaine amide surfactant assemblies by dilution: A multiscale approach. (2nd January 2017)

• Record Type: Journal Article
• Authors: Gaillard, C.; Wang, Y.; Covis, R.; Vives, T.; Benoît, Maud; Benvegnu, T.
• Is Part Of: Carbohydrate polymers. Volume 155(2016)
• Page Start: 49
• Page End: 60
• Publication Date: 2017-01-02
• Subjects: Carrageenan-kappa (PubChem CID: 11966249) -- Betaine (PubChem CID: 247) -- 4-O-Sulfo-beta-d-galactopyranose (PubChem CID: 446807) -- Oleic acid, oleylamine salt (PubChem CID: 6438187); Cationic surfactant/κ-carrageenan polysaccharide assemblies -- Dilution effect -- Electrostatic interactions -- Laser Scanning Confocal Microscopy (LSCM) -- Transmission Electron Microscopy (TEM) -- Raman spectroscopy; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2016.08.027
• Languages: English
• ISSNs: 0144-8617

Abstract

Graphical abstract: Highlights: ⿢ The dilution effect of κ-carrageenan/GB surfactant assemblies was investigated. ⿢ Singular hybrid surfactant/polysaccharide nano-, micro-objects were observed. ⿢ Dilution effect provided a gradual dissociation of assemblies nanostructure. Abstract: The interaction between glycine betaine-based cationic surfactant and algal polysaccharide κ-carrageenan was studied by investigating the dilution effect of the surfactant/polymer assemblies driven by electrostatic interactions. Two aqueous solutions of cationic surfactant and κ-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.