Diffusive dynamics of polymeric aqueous solutions by NMR and DLS

Authors
Magazu, S Maisano, G Migliardo, P Tettamanti, E Villari, V
Citation
S. Magazu et al., Diffusive dynamics of polymeric aqueous solutions by NMR and DLS, NUOV CIM D, 20(12BIS), 1998, pp. 2521-2530
Citations number
19
Categorie Soggetti
Physics
Journal title
NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA D-CONDENSED MATTER ATOMIC MOLECULAR AND CHEMICAL PHYSICS FLUIDS PLASMAS BIOPHYSICS
ISSN journal
03926737 → ACNP
Volume
20
Issue
12BIS
Year of publication
1998
Pages
2521 - 2530
Database
ISI
SICI code
0392-6737(199812)20:12BIS<2521:DDOPAS>2.0.ZU;2-4
Abstract
In this study we present new results, obtained by the integrated applicatio n of Nuclear Magnetic Resonance (NMR) and Photon Correlation Spectroscopy ( PCS) on Poly(Ethylene Oxide) (PEO) aqueous solutions. A comparison between the self-diffusion coefficient and the collective one, determined by the em ploy of the two techniques suggests that water behaves as a good solvent fo r PEO and that, at low concentration, the interaction among the hydrated po lymeric unities has a repulsive character Furthermore, the translational dy namics of these H-bonded systems is discussed within the framework of the c urrent theories.