Diffusivity of Ions in Agarose Gels and Intervertebral Disc: Effect of Porosity

@article{Gu2004DiffusivityOI,
  title={Diffusivity of Ions in Agarose Gels and Intervertebral Disc: Effect of Porosity},
  author={Wei Yong Gu and Hai Yao and Adriana L. Vega and Daniel Flagler},
  journal={Annals of Biomedical Engineering},
  year={2004},
  volume={32},
  pages={1710-1717}
}
The effect of tissue porosity on ion (sodium, potassium, and chloride) diffusivity in agarose gels and porcine intervertebral disc tissues was investigated using an electrical conductivity method. An empirical, constitutive model for diffusivity (D) of solutes in porous fibrous media was proposed: D/Do=exp [−α(rs/κ1/2)β] where rs is the Stokes radius of a solute, κ is the Darcy permeability of the porous medium, Do is the diffusivity in free solution, α and β are two positive parameters whose… CONTINUE READING