Direct Conversion of Agarose into Alkyl Mono- and Disaccharide Surfactants Based on 3,6-Anhydro L- and D-Galactose Units - Université de Rennes Accéder directement au contenu
Article Dans Une Revue ChemistrySelect Année : 2021

Direct Conversion of Agarose into Alkyl Mono- and Disaccharide Surfactants Based on 3,6-Anhydro L- and D-Galactose Units

Résumé

In this work, a new type of agaran-derived non-ionic surfactants has been prepared through the one-pot transformation of agarose into 3,6-anhydro L- and D-galactose acetal monomers and dimers possessing one or two alkyl chains according to the cyclic or open form of the L- and D-galactose units. The two steps process involves the butanolysis of agarose into butyl mono- and disaccharide 3,6-anhydro L- and D-galactose acetals promoted by the presence of Amberlyst-15Dry, followed by the transacetalization with n-dodecanol using the same acid catalyst. The chemical structures of the alkyl mono- and disaccharide surfactants were fully characterized by 1D and 2D NMR experiments. Surface activities of these products in a pure form or as mixtures were investigated depending on their hydrophilicity/hydrophobicity and quite low values of superficial tensions (andlt;27 mN m−1) and sunflower seed oil/water interfacial tensions (∼5 mN m−1) were obtained.

Domaines

Chimie
Fichier principal
Vignette du fichier
Wang et al - 2021 - Direct Conversion of Agarose into Alkyl Mono-_Revised_manuscript.doc.pdf (1.19 Mo) Télécharger le fichier
Wang_slct202004542-sup-0001-misc_information.pdf (2.2 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03130460 , version 1 (16-09-2021)

Identifiants

Citer

Y. Wang, L. Renault, J.-P. Guégan, T. Benvegnu. Direct Conversion of Agarose into Alkyl Mono- and Disaccharide Surfactants Based on 3,6-Anhydro L- and D-Galactose Units. ChemistrySelect, 2021, 6 (3), pp.389-395. ⟨10.1002/slct.202004542⟩. ⟨hal-03130460⟩
85 Consultations
73 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More