Artificial Organs 1998-03-01

Anionic collagen: polymer composites with improved dielectric and rheological properties.

G Goissis, L Piccirili, J C Goes, A M de Guzzi Plepis, D K Das-Gupta

Index: Artif. Organs 22(3) , 203-9, (1998)

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Abstract

This work describes the preparation and characterization of anionic collagen composites with rhamsan and vinylidene fluoride-trifluorethylene with improved rheological and dielectric properties without loss of collagen secondary structure with an interaction occurring between both macromolecules of the composites. On a comparative basis, the force needed for the extrusion of anionic collagen:rhamsan composites was in the range from 0.088 to 0.080 J compared to that for collagen of 0.189 J. Anionic collagen:vinylidene fluoride-trifluorethylene composites were characterized, in the case of the 1:1 composite, by a pyroelectric coefficient of 1.89 x 10(-4) cm(-2) K(-1), which was significantly higher than those determined under the same conditions for native anionic collagen and vinylidene fluoride-trifluorethylene.