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- Structure Factor of Polymers Interacting via a Short Range Repulsive Potential: Application to Hairy Wormlike Micelles doi link

Auteur(s): Massiera G., Ramos L., Ligoure C., Pitard E.

(Article) Publié: Physical Review E: Statistical, Nonlinear, And Soft Matter Physics, vol. 68 p.021803 (2003)
Texte intégral en Openaccess : arxiv


Ref HAL: hal-00338950_v1
PMID 14524997
DOI: 10.1103/PhysRevE.68.021803
WoS: 000185193900060
Exporter : BibTex | endNote
9 Citations
Résumé:

We use the random phase approximation to compute the structure factor S(q) of a solution of chains interacting through a soft and short range repulsive potential V. Above a threshold polymer concentration, whose magnitude is essentially controlled by the range of the potential, S(q) exhibits a peak whose position depends on the concentration. We take advantage of the close analogy between polymers and wormlike micelles and apply our model, using a Gaussian function for V, to quantitatively analyze experimental small angle neutron scattering profiles of solutions of hairy wormlike micelles. These samples, which consist in surfactant self-assembled flexible cylinders decorated by amphiphilic copolymer, provide indeed an appropriate experimental model system to study the structure of sterically interacting polymer solutions.