H+ Binding and Diffusion-Reaction Rates in Collagen Electromechanics

Nussbaum, Jeremy H.; Grodzinsky, Alan J.

doi:10.1016/b978-0-08-024634-5.50021-2

Proceedings of the Seventh New England (Northeast) Bioengineering Conference 1979

DOI: 10.1016/b978-0-08-024634-5.50021-2

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H+ Binding and Diffusion-Reaction Rates in Collagen Electromechanics

Jeremy H. Nussbaum

Alan J. Grodzinsky

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1980

1981

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Contribution of electrodiffusion to the dynamics of electrically stimulated changes in mechanical properties of collagen membranes

Shoenfeld

Grodzinsky

1980

Biopolymers

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SynopsisWe have studied the kinetics of oscillatory tensile forces in collagen membranes. These forces were generated by sinusoidal electric fields applied across the membrane. Both the magnitude and phase of the measured force changed with frequency over a three-decade range. The membrane-separated electrolyte baths had different ionic strength but identical nonisoelectric pH. Changes in intramembrane ionic strength due to the electric field were calculated over the same frequency range via an electrodiffusion model that was generalized to include convection and electrokinetic coupling. A comparison of the experimental and theoretical phases and amplitudes versus frequency suggests that electrodiffusion is the dominant rate-limiting process in this electromechanochemical transduction. These results are relevant to electrostatic interactions in connective tissues and to membrane-based filtration devices in which membrane permeability may be actively varied and controlled by an applied electric field.

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Contribution of electrodiffusion to the dynamics of electrically stimulated changes in mechanical properties of collagen membranes

Shoenfeld

Grodzinsky

1980

Biopolymers

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Proton diffusion reaction in a protein polyelectrolyte membrane and the kinetics of electromechanical forces

Nussbaum

Grodzinsky

1981

Journal of Membrane Science

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H+ Binding and Diffusion-Reaction Rates in Collagen Electromechanics

Cited by 2 publications

References 5 publications

Contribution of electrodiffusion to the dynamics of electrically stimulated changes in mechanical properties of collagen membranes

Contribution of electrodiffusion to the dynamics of electrically stimulated changes in mechanical properties of collagen membranes

Proton diffusion reaction in a protein polyelectrolyte membrane and the kinetics of electromechanical forces

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