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Effect of molecular structure of eco-friendly glycolipid biosurfactants on the adsorption of hair-care conditioning polymers.
- Source :
-
Colloids and surfaces. B, Biointerfaces [Colloids Surf B Biointerfaces] 2020 Jan 01; Vol. 185, pp. 110578. Date of Electronic Publication: 2019 Oct 19. - Publication Year :
- 2020
-
Abstract
- Pseudo-binary mixtures of different glycolipids, four different rhamnolipids (RL) and an alkyl polyglucoside (APG), with poly(diallyl-dimethylammonium chloride) (PDADMAC) have been studied in relation to their adsorption onto negatively charged surfaces to shed light on the impact of the molecular structure of surfactants from natural sources (instead of synthetic surfactant, such as sodium laureth sulfate) on the adsorption of hair-conditioning polymers. For this purpose, the self-assembly of such mixtures in aqueous solution and their adsorption onto negatively charged surfaces mimicking the negative charge of damaged hair fibres have been studied combining experiments and self-consistent field (SCF) calculations. The results show that the specific physico-chemical properties of the surfactants (charge, number of sugar rings present in surfactant structure and length of the hydrocarbon length) play a main role in the control of the adsorption process, with the adsorption efficiency and hydration being improved in relation to conventional sulfate-based systems for mixtures of PDADMAC and glycolipids with the shortest alkyl chains. SCF calculations and Energy Dispersive X-Ray Spectroscopy (EDS) analysis on real hair confirmed such observations. The results allow one to assume that the characteristic of the surfactants, especially rhamnolipids, conditions positively the adsorption potential of polyelectrolytes in these model systems. This study provides important insights on the mechanisms underlying the performance of more complex but eco-friendly washing formulations.<br /> (Copyright © 2019 Elsevier B.V. All rights reserved.)
- Subjects :
- Adsorption
Biomimetics
Glycolipids metabolism
Hair chemistry
Humans
Models, Molecular
Molecular Structure
Polymers administration & dosage
Surface-Active Agents metabolism
Glycolipids chemistry
Hair drug effects
Materials Testing
Polyethylenes chemistry
Polymers chemistry
Quaternary Ammonium Compounds chemistry
Surface-Active Agents chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 1873-4367
- Volume :
- 185
- Database :
- MEDLINE
- Journal :
- Colloids and surfaces. B, Biointerfaces
- Publication Type :
- Academic Journal
- Accession number :
- 31678812
- Full Text :
- https://doi.org/10.1016/j.colsurfb.2019.110578