The analysis of the small‐signal AC‐response of bovine enamel membranes | Zendy

Scholberg H. P. F. | Zendy; Borggreven J. M. P. M. | Zendy; Driessens F. C. M. | Zendy; Schoonman J. | Zendy

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The analysis of the small‐signal AC‐response of bovine enamel membranes

Author(s) -

Scholberg H. P. F.,

Borggreven J. M. P. M.,

Driessens F. C. M.,

Schoonman J.

Publication year - 1987

Publication title -

berichte der bunsengesellschaft für physikalische chemie

Language(s) - English

Resource type - Journals

ISSN - 0005-9021

DOI - 10.1002/bbpc.19870910211

Subject(s) - enamel paint , electrical impedance , membrane , permeability (electromagnetism) , phase angle (astronomy) , dielectric spectroscopy , materials science , analytical chemistry (journal) , membrane permeability , chemistry , physics , composite material , optics , chromatography , engineering , electrical engineering , biochemistry , electrode , electrochemistry

The ion permeability of bovine enamel membranes can be estimated from impedance spectroscopy. In this study the 6‐parameter model, a previously proposed operational description of the frequency dependence of the impedance of an enamel membrane is compared with a model which uses a Constant‐Phase‐Angle (CPA) element, and which is proposed as an onset to a more mechanistic description of enamel impedance spectra The model using the CPA element is shown to be a valid description for the measured impedance data. The parameter values for R 0 and ω max (the angular measuring‐frequency where the imaginary part of the membrane‐impedance is maximal) obtained using this model, confirm that these parameters can be employed as predictors for bovine enamel permeability.

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