Polymer size exponents of branched dextrans
| Autor: | M. Daoud, M. G. Mennen, J.A.P.P. van Dijk, J. A. M. Smit |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
chemistry.chemical_classification
Quantitative Biology::Biomolecules Aqueous solution Polymers and Plastics Diffusion Organic Chemistry Thermodynamics Polymer Neutron scattering Power law Condensed Matter::Soft Condensed Matter Inorganic Chemistry chemistry Virial coefficient Polymer chemistry Materials Chemistry Exponent Radius of gyration |
| Zdroj: | Macromolecules. 25:3585-3590 |
| ISSN: | 1520-5835 0024-9297 |
| DOI: | 10.1021/ma00039a044 |
| Popis: | The exponent ν in the power law for the radius of gyration, R∼N ν , with N the total number of chain segments, has been theoretically examined for randomly branched and regular comblike chains. Values of ν expected in the limits of good solvent and θ solvent are compared with corresponding experimental values for dextrans in aqueous solutions. In the dilute regime power laws describing the molecular weight dependence of the radius of gyration, mutual diffusion coefficient, second virial coefficient, and the intensity of neutron scattering indicate clearly the branched nature of the molecules |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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