Abstract
In this paper we did a study of collagen membranes prepared with iron as
an impurity. In this study one try to understand the function of the
iron in the collagen structure in view of increasing the value of
piezoelectric strain tensor element d(14). We prepared different samples
with different iron doping levels. One has samples doped by immersion in
solutions of FeCl2 at 0.1 M and 0.2 M (ColFeC101 and ColFeC102) and iron
doped directly in solution with Fe2O3 at 5% and 15% (Col7Fe5 and
Col7Fe15). We did a study of the Mossbauer spectroscopy, DC electrical
conductivity and the piezoelectric strain tensor element d14, the
elastic constant s(55), and the dielectric function El I of the samples.
The loss factor Q(-1) of the samples was also measured using the
admittance resonance method. The role played by the iron in the
different situations and the consequences for the transport properties
is discussed. (C) 2002 Editions scientifiques et medicales Elsevier SAS.
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