منابع مشابه
A model of ideal elastomeric gels for polyelectrolyte gels.
The concept of the ideal elastomeric gel is extended to polyelectrolyte gels and verified using a polyacrylamide-co-acrylic acid hydrogel as a model material system. A comparison between mixing and ion osmosis shows that the mixing osmosis is larger than the ion osmosis for small swelling ratios, while the ion osmosis dominates for large swelling ratios. We show further that the non-Gaussian ch...
متن کاملSimilarities Between Polyelectrolyte Gels and Biopolymer Solutions
Correspondence to: F. Horkay (E-mail: [email protected]) ABSTRACT: Small angle neutron scattering (SANS) measurements and osmotic swelling pressure measurements are reported for polyelectrolyte gels and solutions under nearly physiological conditions. A synthetic polymer (sodium-polyacrylate) and three biopoly mers (DNA, hyaluronic acid, and polyaspartic acid) are studied. The neutron scatt...
متن کاملA Dynamic Model of Polyelectrolyte Gels
We derive a model of the coupled mechanical and electrochemical effects of polyelectrolyte gels. We assume that the gel, which is immersed in a fluid domain, is an immiscible and incompressible mixture of a solid polymeric component and the fluid. As the gel swells and de-swells, the gel-fluid interface can move. Our model consists of a system of partial differential equations for mass and line...
متن کاملCalcium Induced Volume Transition in Polyelectrolyte Gels
The osmotic properties and the small angle neutron scattering (SANS) behaviour of fully neutralized sodium polyacrylate gels are investigated in the presence of calcium ions. Analysis of the SANS response displays three characteristic length scales, two of which are of thermodynamic origin, while the third, associated with the frozen-in structural inhomogeneities, is static. The SANS results ar...
متن کاملLarge deformation and electrochemistry of polyelectrolyte gels
Immersed in an ionic solution, a network of polyelectrolytes imbibes the solution and swells, resulting in a polyelectrolyte gel. The swelling is reversible, and the amount of swelling is regulated by ionic concentrations, mechanical forces, and electric potentials. This paper develops a field theory to couple large deformation and electrochemistry. A specific material model is described, inclu...
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ژورنال
عنوان ژورنال: Progress in Biophysics and Biophysical Chemistry
سال: 1954
ISSN: 0096-4174
DOI: 10.1016/s0096-4174(18)30061-1