Design of eco-friendly fabric softeners: ...
Document type :
Compte-rendu et recension critique d'ouvrage
Title :
Design of eco-friendly fabric softeners: Structure, rheology and interaction with cellulose nanocrystals
Author(s) :
Oikonomou, E.K. [Auteur]
Ocean and Earth Science [Southampton]
Christov, N. [Auteur]
Systèmes Non Linéaires et à Retards [SyNeR]
Cristobal, G. [Auteur]
Bourgaux, C. [Auteur]
Institut Galien Paris-Sud [IGPS]
Heux, L. [Auteur]
Centre de Recherches sur les Macromolécules Végétales [CERMAV ]
Boucenna, I. [Auteur]
Berret, Jean-Francois [Auteur]
Matière et Systèmes Complexes [MSC]
Ocean and Earth Science [Southampton]
Christov, N. [Auteur]
Systèmes Non Linéaires et à Retards [SyNeR]
Cristobal, G. [Auteur]
Bourgaux, C. [Auteur]
Institut Galien Paris-Sud [IGPS]
Heux, L. [Auteur]
Centre de Recherches sur les Macromolécules Végétales [CERMAV ]
Boucenna, I. [Auteur]
Berret, Jean-Francois [Auteur]
Matière et Systèmes Complexes [MSC]
Journal title :
Journal of Colloid and Interface Science
Pages :
206-215
Publisher :
Elsevier
Publication date :
2018-09
ISSN :
0021-9797
English keyword(s) :
Cationic surfactant
vesicles
fabric softeners
guar polymers
cotton fibers
cellulose nanocrystals
vesicles
fabric softeners
guar polymers
cotton fibers
cellulose nanocrystals
HAL domain(s) :
Physique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft]
English abstract : [en]
Hypothesis: Concentrated fabric softeners are water-based formulations containing around 10-15 wt. % of double tailed esterquat surfactants primarily synthesized from palm oil. In recent patents, it was shown that a ...
Show more >Hypothesis: Concentrated fabric softeners are water-based formulations containing around 10-15 wt. % of double tailed esterquat surfactants primarily synthesized from palm oil. In recent patents, it was shown that a significant part of the surfactant contained in today's formulations can be reduced by circa 50 % and replaced by natural guar polymers without detrimental effects on the deposition and softening performances. We presently study the structure and rheology of these softener formulations and identify the mechanisms at the origin of these effects. Experiments: The polymer additives used are guar gum polysaccharides, one cationic and one modified through addition of hydroxypropyl groups. Formulations with and without guar polymers are investigated using optical and cryo-transmission electron microscopy, small-angle light and X-ray scattering and finally rheology. Similar techniques are applied to study the phase behavior of softener and cellulose nanocrystals considered here as a model for cotton. Findings: The esterquat surfactants are shown to assemble into micron-sized vesicles in the dilute and concentrated regimes. In the former, guar addition in small amounts does not impair the vesicular structure and stability. In the concentrated regime, cationic guars induce a local crowding associated to depletion interactions and leads to the formation of a local lamellar order. In rheology, adjusting the polymer concentration at 1/10th that of the surfactant is sufficient to offset the decrease of the elastic property associated with the surfactant reduction. In conclusion, we have shown that through an appropriate choice of natural additives it is possible to lower the concentration of surfactants in fabric conditioners by about half, a result that could represent a significant breakthrough in current home care formulations.Show less >
Show more >Hypothesis: Concentrated fabric softeners are water-based formulations containing around 10-15 wt. % of double tailed esterquat surfactants primarily synthesized from palm oil. In recent patents, it was shown that a significant part of the surfactant contained in today's formulations can be reduced by circa 50 % and replaced by natural guar polymers without detrimental effects on the deposition and softening performances. We presently study the structure and rheology of these softener formulations and identify the mechanisms at the origin of these effects. Experiments: The polymer additives used are guar gum polysaccharides, one cationic and one modified through addition of hydroxypropyl groups. Formulations with and without guar polymers are investigated using optical and cryo-transmission electron microscopy, small-angle light and X-ray scattering and finally rheology. Similar techniques are applied to study the phase behavior of softener and cellulose nanocrystals considered here as a model for cotton. Findings: The esterquat surfactants are shown to assemble into micron-sized vesicles in the dilute and concentrated regimes. In the former, guar addition in small amounts does not impair the vesicular structure and stability. In the concentrated regime, cationic guars induce a local crowding associated to depletion interactions and leads to the formation of a local lamellar order. In rheology, adjusting the polymer concentration at 1/10th that of the surfactant is sufficient to offset the decrease of the elastic property associated with the surfactant reduction. In conclusion, we have shown that through an appropriate choice of natural additives it is possible to lower the concentration of surfactants in fabric conditioners by about half, a result that could represent a significant breakthrough in current home care formulations.Show less >
Language :
Anglais
Popular science :
Non
ANR Project :
Science and Engineering for Advanced Materials and devices
Université Sorbonne Paris Cité
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Université Sorbonne Paris Cité
Interactions des nanoparticules avec des surfaces mimétiques des poumons et du liquide pulmonaire
Nanoparticules d'oxyde de cérium recouvertes de polymères industriels innovants pour le traitement des accidents vasculaires cérébraux
Design des Alliages Métalliques pour Allègement des Structures
Développement d'une infrastructure française distribuée coordonnée
Assemblage Macromoléculaire Hors-équilibre Compréhension, Contrôle & nouvelles structures
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