Effective intramolecular interactions in weakly charged polyelectrolytes: Relation to structural behavior of solutionстатья
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Дата последнего поиска статьи во внешних источниках: 24 октября 2016 г.
Авторы:
Zherenkova L.V. ,
Komarov P.V. ,
Khalatur P.G.
Журнал:
Polymer Science, Series A
Том:
48
Номер:
8
Год издания:
2006
Издательство:
Pleiades Publishing, Ltd
Местоположение издательства:
Road Town, United Kingdom
Первая страница:
859
Последняя страница:
869
DOI:
10.1134/S0965545X06080128
Аннотация:
A self-consistent integral equation theory in the form of a hybrid Monte Carlo/PRISM computation scheme was used to study a polyelectrolyte solution. The static conformational and structural properties of polyions of different rigidities in a good solvent were studied with explicit allowance for counterions over a wide concentration range. An analysis of the calculated effective potentials and correlation functions confirms the presence of effective attraction between units of the charged polymer in semidilute and concentrated solutions; this attraction leads to the collapse of polyions under certain conditions. It was shown that the cause of effective attraction is the dipole-dipole interaction of ion pairs. For the region of polyelectrolyte transition from the semidilute to the concentrated state of solution, the results qualitatively agree with experimental data and theoretical predictions. Visualized images of conformations in the test range of parameters are given. © Pleiades Publishing, Inc., 2006.
Добавил в систему:
Комаров Павел Вячеславович