Scaling Behavior of Hyaluronic Acid in Solution with Mono- and Divalent Ions
| Autor: | Anne-Marie Hecht, Ferenc Horkay, Erik Geissler |
|---|---|
| Přispěvatelé: | Laboratoire Interdisciplinaire de Physique [Saint Martin d’Hères] (LIPhy), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Section on Tissue Biophysics and Biomimetics [Bethesda] (STBB), STBB |
| Rok vydání: | 2010 |
| Předmět: |
Polymers and Plastics
Sodium Inorganic chemistry chemistry.chemical_element Salt (chemistry) Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences Article Divalent Ion Dynamic light scattering Materials Chemistry chemistry.chemical_classification collective diffusion osmotic compression modulus Organic Chemistry ion distribution polyelectrolyte solutions dynamic light scattering 021001 nanoscience & nanotechnology Condensed Matter Physics Polyelectrolyte 0104 chemical sciences chemistry Ionic strength [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph] Counterion 0210 nano-technology ionic strength |
| Zdroj: | Macromolecular Symposia Macromolecular Symposia, Wiley-VCH Verlag, 2014, 291-292 (1), pp.362-370. ⟨10.1002/masy.201050543⟩ |
| ISSN: | 1521-3900 1022-1360 |
| Popis: | International audience; The effect of the simultaneous presence of mono- and divalent cations on the thermodynamics of polyelectrolyte solutions is not fully understood. In physiological conditions, combinations of these ions affect structure formation in biopolymer systems. It is known that divalent counterions form a tight sheath around the polymer backbone, while monovalent ions are distributed in a diffuse cloud. Dynamic light scattering measurements of the collective diffusion coefficient D and the osmotic compressibility of semi-dilute hyaluronan solutions containing different ratios of sodium and calcium ions are compared with simple polyelectrolyte models. Scaling relationships are derived in terms of polymer concentration and ionic strength J of the added salt. Differences in the effects of sodium and calcium ions are expressed only through J. |
| Databáze: | OpenAIRE |
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