Accueil >
Production scientifique
(119) Production(s) de LIGOURE C.
|
|
Monte Carlo simulations of colloidal pair potential induced by telechelic polymers : statistics of loops and bridges 
Auteur(s): Testard V., Oberdisse J., Ligoure C.
(Article) Publié:
Macromolecules, vol. 41 p.7219-7226 (2008)
Ref HAL: hal-00502747_v1
DOI: 10.1021/ma8005813
WoS: 000259859800051
Exporter : BibTex | endNote
22 Citations
Résumé: A Monte Carlo study of the statistics of loop and bridge formation between colloidal particles, and in particular micelles, by telechelic polymers is presented. The experimental fact that the hydrophobic outer blocks of a triblock copolymer tend to stick into micelles in aqueous solution is mimicked by counting only polymer chains with both ends on the surface of the micelles. The long inner hydrophilic block is generated by a random walk procedure. It is excluded from the volume of the micelles, and it can form either a loop, with both stickers on the same micelle, or a bridge, with the stickers on two different micelles. In this paper, the pair potential is determined between two micelles as a function of distance and chain-to-micelle size ratio, for ideal and self-avoiding chains. In the latter case, the effect of many chains has also been explored
|
|
|
|
Copolymer-induced stabilizing effect of highly swollen hexagonal mesophases
Auteur(s): Ramos L., Ligoure C.
(Article) Publié:
Langmuir, vol. 24 p.5221-5224 (2008)
Texte intégral en Openaccess : 
Ref HAL: hal-00323730_v1
PMID 18407677
Ref Arxiv: 0809.3996
DOI: 10.1021/la800196s
WoS: 000255856100006
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
10 Citations
Résumé: We show quantitatively that tiny amounts of copolymer that decorate a oil/water interfaces can greatly enhance the stability of swollen surfactant hexagonal phases, comprising oil tubes regularly arranged in a water matrix. Such soft composite materials, whose both radius of the tubes and water channel between the tubes can be controlled independently over large ranges, offer a potential interest for the synthesis of mesoporous materials.
|
|
|
|
Structure and rheological properties of model microemulsion networks filled with nanoparticles
Auteur(s): Puech Nicolas, Mora S., Testard V., Porte Grégoire, Ligoure C., Grillo Isabelle, Phou T., Oberdisse J.
(Article) Publié:
European Physical Journal E, vol. 26 p.13-24 (2008)
Texte intégral en Openaccess :
Ref HAL: hal-00290540_v1
PMID 18418546
Ref Arxiv: 0806.4181
DOI: 10.1140/epje/i2007-10275-3
WoS: 000256329100003
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
19 Citations
Résumé: Model microemulsion networks of oil droplets stabilized by non ionic surfactant and telechelic polymer C18-PEO(10k)-C18 have been studied for two droplet-to-polymer size ratios. The rheological properties of the networks have been measured as a function of network connectivity and can be described in terms of simple percolation laws. The network structure has been characterised by Small Angle Neutron Scattering. A Reverse Monte Carlo approach is used to demonstrate the interplay of attraction and repulsion induced by the copolymer. These model networks are then used as matrix for the incorporation of silica nanoparticles (R=10nm), individual dispersion being checked by scattering. A strong impact on the rheological properties is found for silica volume fractions up to 9%.
|
 |
Brittle fracture of transient networks
Auteur(s): Ligoure C.
Conference: Annual Meeting of European Network of Excellence Softcomp 2008 (Riva del Garda, Italy, FR, 2008-05-02)
|
|
|
|
Brittle fracture of transient networks
Auteur(s): Ligoure C.
Conférence invité: International Symposium on Non-Equilibrium Soft Matter (Kyoto, JP, 2008-06-02)
|
|
Viscoélasticité d'un double réseau transitoire modèle micelles géantes enchevêtrées pontées par des polymères tétéchèliques
Auteur(s): Ligoure C.
(Séminaires)
Centre de Recherches RHODIA (Aubervilliers, France, FR), 2008-07-01 |
|
|
|
Viscoelastic properties of entangled wormlike micelles brideged by telechelic polymers: an experimental modelfor a double network with sliding junctions
Auteur(s): Ligoure C.
Conference: International Soft Matter Conference 2007 (Aachen, DE, 2007-10-14)
Résumé: Résumé (à complèter)
|
