Polyelectrolyte Gels-Fundamentals and Applications
نویسندگان
چکیده
منابع مشابه
Similarities 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 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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Consisting of charged network swollen with ionic solution, polyelectrolyte gels are known for their salient characters including ion exchange and stimuli responsiveness. The active properties of polyelectrolyte gels are mostly due to the migration of solvent molecules and solute ions, and their interactions with the fixed charges on the network. In this paper, we extend the recently developed n...
متن کاملA 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 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...
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ژورنال
عنوان ژورنال: Polymer Journal
سال: 2006
ISSN: 0032-3896,1349-0540
DOI: 10.1295/polymj.pj2006125