| Issue |
Europhys. Lett.
Volume 52, Number 3, November I 2000
|
|
|---|---|---|
| Page(s) | 284 - 290 | |
| Section | Condensed matter: structure, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2000-00436-6 | |
| Published online | 01 September 2002 | |
Static properties of hydrophobic polyelectrolytes in the thermodynamic limit
1
Laboratoire de Physique de la Matière Condensée
URA 792, Collège de France
11 place Marcelin-Berthelot 75231 Paris, France
2
Departamento de Física, Centro de Investigación y de Estudios
Avanzados del IPN
A.P. 14-740, 07000 México D.F., Mexico
Received:
12
April
2000
Accepted:
14
September
2000
A series of hydrophobic sodium poly(styrene-co-styrene sulfonate) of
different charge fractions has been studied by static light scattering
in the thermodynamic limit. In the examined concentration range
(
, in monomers), the solutions show an ideal gas behaviour.
A quantitative comparison with previous osmotic pressure measurements reveals
the existence of a strong variation of the polarizability, which is
related to a change of local chain conformation.
This result can be interpreted in terms of the globular instability
model for hydrophobic polyelectrolytes (pearl necklace model).
PACS: 61.25.Hq – Macromolecular and polymer solutions; polymer melts; swelling / 36.20.Ey – Conformation (statistics and dynamics) / 42.25.Fx – Diffraction and scattering
© EDP Sciences, 2000
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