Existence and interpretation of too high excluded volume exponents in the apparent scaling laws for polymer dimensions in a poor solvent
- 1 January 1980
- journal article
- Published by EDP Sciences in Journal de Physique Lettres
- Vol. 41 (1) , 9-11
- https://doi.org/10.1051/jphyslet:019800041010900
Abstract
It is shown that if the transition from a gaussian to an excluded volume statistics takes place progressively starting from a number of links Nc, some quantities such as the radius of gyration or the scattering curve scale with effective exponents higher than the asymptotical excluded volume exponent for 10 Nc < N < 100 Nc. This model could in particular explain the results observed with the polyacrylamide-water system, where Nc is large at room temperatureKeywords
This publication has 5 references indexed in Scilit:
- Polyacrylamide in water: molecular weight dependence of 〈R2〉 and [η] and the problem of the excluded volume exponentPolymer, 1979
- Dynamics of polymers in dilute solutions : an explanation of anomalous indices by cross-over effectsJournal de Physique, 1979
- Paramètres de transport et lois d'échelle dans les solutions diluées de polymères flexiblesJournal de Physique Lettres, 1979
- Cross-over in polymer solutionsJournal de Physique, 1978
- Étude théorique et expérimentale de la lumière diffusée par des solutions de macromolécules en chaines dans les bons solvantsJournal de Chimie Physique et de Physico-Chimie Biologique, 1958