STIFF (DNA) AND FLEXIBLE (NAPSS) POLYELECTROLYTE CHAIN EXPANSION AT VERY-LOW SALT CONCENTRATION

Authors
BOROCHOV N EISENBERG H
Citation
N. Borochov et H. Eisenberg, STIFF (DNA) AND FLEXIBLE (NAPSS) POLYELECTROLYTE CHAIN EXPANSION AT VERY-LOW SALT CONCENTRATION, Macromolecules, 27(6), 1994, pp. 1440-1445
Citations number
63
Categorie Soggetti
Polymer Sciences
Journal title
Macromolecules → ACNP
ISSN journal
00249297
Volume
27
Issue
6
Year of publication
1994
Pages
1440 - 1445
Database
ISI
SICI code
0024-9297(1994)27:6<1440:S(AF(P>2.0.ZU;2-A
Abstract
The expansion of sodium poly(styrenesulfonate) (NaPSS) polyelectrolyte coils has been studied by light scattering and velocity sedimentation at a NaCl concentration of 0.5-0.001 M. Good agreement between the fl exible NaPSS and intrinsically stiff DNA (data from a previous study) is obtained in terms of the conformation-space renormalization-group a pproach. Present polyelectrolyte the expansion and excluded-volume the ories are not adequate to satisfactorily interpret the experimental re sults.