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2000, Number 4

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Rev Mex Ing Biomed 2000; 21 (4)

Calcium phosphate coating over porous polyurethane by a biomimetic process

Martínez-Pérez CA, Martínez-Villafañe A, Romero-García J

Language: Spanish
References: 19
Page: 137-141
PDF size: 223.95 Kb.


ABSTRACT

Biomimetic growth of calcium phosphate compound on porous polyurethane (PU) treated with tetra ethyl orto-silicate (TEOS) and soaked in simulated body fluid solution was studied using scanning electron microscopy (SEM), energy dispersive X-ray analysis, and Fourier Transformed infrared spectroscopy-attenuated total reflectance (FTIR-ATR). Polyurethane was treated with TEOS in order to led to the formation of silanols groups which stimulated the growth of hydroxiapatite when immersed in simulated body fluid solution (SBF). Polyurethanes not treated with TEOS did not whow calcium phosphate growth upon immersion in SBF solution. The Ca and P determined by EDAX and inductively coupled plasma spectroscopy (ICP) analysis revealed that surface layer was no – stoichiometric hydroxiapatite, but carbonated – containing hidroxiapatite with Ca/P ratio of 1.5 – 1.6, this was confirmed with FTIR-ATR.


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