Formation of Soft Nanoparticles via Polyelectrolyte Complexation: A Viscometric Study.

Céline Rondon 1 Jean-François Argillier 1, * Michel Moan 2 Fernando Leal Calderon 3
* Auteur correspondant
1 IFPEN - IFP Energies nouvelles
2 LIMATB - Laboratoire d'Ingénierie des Matériaux de Bretagne
3 Laboratoire Chimie et Biologie des Membranes et des Nonoobjets
Abstract : This paper describes the formation of soft nanoparticles resulting from electrostatically driven complexation of oppositely charged polyelectrolytes. The system was composed of a strong polyanion (PolyStyrene Sulfonate, PSS) and a weak polycation (Poly(Allylamine) Hydrochloride, PAH) in large excess. Soft nanoparticles were obtained by pouring a PSS solution into a PAH one under constant stirring. The PolyElectrolyte Complexes (PEC) were characterized through a viscometric study complemented by Dynamic Light Scattering (DLS), electrophoretic mobility and suspension turbidity measurements. PEC suspensions were centrifuged and by measuring the viscosity of the supernatant, we were able to estimate the free polycation concentration and hence the percentage of complexed polycation. We also measured the relative viscosity of the suspensions; from the estimated contribution of the PEC particles and of the polycation in excess, the average particle volume fraction was estimated. From all viscometric data, we could derive the evolution of the binding stoichiometry in PEC and of the effective particle volume fraction as a function of the mixing ratio (ratio of the cationic to anionic groups) and of the pH. Our results emphasize the importance of charge accessibility in controlling both the stoichiometry and packing density of the complexes.
Mots-clés : nanoparticules molles viscosité
Type de document :
Article dans une revue
Oil & Gas Science and Technology - Revue d'IFP Energies nouvelles, Institut Français du Pétrole, 2014, 69 (4), pp. 387-395. 〈10.2516/ogst/2014015〉
Liste complète des métadonnées

Littérature citée [33 références]  Voir  Masquer  Télécharger
https://hal-ifp.archives-ouvertes.fr/hal-01068345
Contributeur : Françoise Bertrand <>
Soumis le : jeudi 25 septembre 2014 - 14:42:41
Dernière modification le : mardi 15 mai 2018 - 14:50:03
Document(s) archivé(s) le : vendredi 14 avril 2017 - 14:11:09

Fichier

A9RFCFA.pdf
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

Collections

IFP | LIMATB | UNIV-BREST | OGST

Citation

Céline Rondon, Jean-François Argillier, Michel Moan, Fernando Leal Calderon. Formation of Soft Nanoparticles via Polyelectrolyte Complexation: A Viscometric Study.. Oil & Gas Science and Technology - Revue d'IFP Energies nouvelles, Institut Français du Pétrole, 2014, 69 (4), pp. 387-395. 〈10.2516/ogst/2014015〉. 〈hal-01068345〉

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de la notice

332

Téléchargements de fichiers

298

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD