Structure factor of polymers interacting via a short range repulsive potential: application to hairy wormlike micelles.
Phys Rev E Stat Nonlin Soft Matter Phys
; 68(2 Pt 1): 021803, 2003 Aug.
Article
em En
| MEDLINE
| ID: mdl-14524997
ABSTRACT
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.
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MEDLINE
Tipo de estudo:
Prognostic_studies
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En
Ano de publicação:
2003
Tipo de documento:
Article