Self-similar wave of swelling/collapse phase transition along polyelectrolyte gel / Zubarev AY,Blyakhman FA,Pollack GH,Gusev P,Safronov AP // MACROMOLECULAR THEORY AND SIMULATIONS. - 2004. - V. 13, l. 8. - P. 697-701.

ISSN/EISSN:

1022-1344 / нет данных

Type:

Article

Abstract:

Theoretical analysis of the possibility of collapse/swelling phase transition propagation along a polyelectrolyte gel thread has been performed. A differential equation that determines the time dependence of the degree of swelling of polymer thread under the radial mechanical force has been obtained. It formally coincides with the equation of diffusion of an impurity in a medium with a certain source density that depends on excluded-volume and Coulomb interactions, osmotic pressure of counterions, and entropy of the subchains. Two stationary points of this equation corresponds to contracted and swollen states. It has been shown that once activated, the phase transition between these stationary points could propagate along the thread in the form of a wave with positive speed if the initial state is characterized by a higher level of free energy than the final state. The results of numerical calculations illustrating the process of phase transition propagation along polyelectrolyte gel thread show that propagation of the swelling/collapse phase transition takes place in the form of the stepwise self-similar wave with steep front. The sharp boundary between swollen and collapsed zones is observed and does not tend to dissipate as propagation proceeds.

Author keywords:

hydrogels; phase transition; polyelectrolytes; swelling STRUCTURAL-CHANGES; NERVE-FIBERS; CELLS

DOI:

10.1002/mats.200400027

Web of Science ID:

ISI:000224950500003

Соавторы в МНС:

Другие поля

Поле	Значение
Month	OCT 28
Publisher	WILEY-V C H VERLAG GMBH
Address	PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
Language	English
Keywords-Plus	STRUCTURAL-CHANGES; NERVE-FIBERS; CELLS
Research-Areas	Polymer Science
Web-of-Science-Categories	Polymer Science
Author-Email	alexander.safronov@usu.ru
ResearcherID-Numbers	Zubarev, Adrey/B-4752-2014 Blyakhman, Felix/B-7807-2011
ORCID-Numbers	Blyakhman, Felix/0000-0003-4434-2873
Number-of-Cited-References	12
Usage-Count-Since-2013	4
Journal-ISO	Macromol. Theory Simul.
Doc-Delivery-Number	868YZ