Structural evidence of charge renormalization in semi-dilute solutions of highly charged polyelectrolytes

被引:90
作者
Essafi, W
Lafuma, F
Williams, CE
机构
[1] Univ Paris Sud, MESR, CEA, CNRS,LURE, F-91405 Orsay, France
[2] Univ Paris 06, ESPCI, CNRS, Lab Physicochim Macromol, F-75231 Paris, France
[3] Coll France, CNRS, Phys Mat Condensee Lab, F-75231 Paris, France
关键词
D O I
10.1007/s100510050765
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
We show experimentally that Manning counterion condensation also leads to a renormalization of the charge density at high concentrations of highly charged, flexible, hydrophilic polyelectrolytes. Investigations by small angle neutron and X-ray scattering of semi-dilute solutions of poly(acrylamide-co-sodium-2-acrylamido-2-methylpropane sulfonate) at different charge densities above the condensation threshold, show that the scattering function is invariant with the charge density.
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页码:261 / 266
页数:6
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