Use of thermogravimetric analysis Fourier transform infrared spectroscopy in the study of the reaction mechanism of the preparation of Pb(Zr,Ti)O-3 by the sol-gel method

Abstract

The thermal decomposition of a sol-gel precursor of Pb(Zr, Ti)O-3 is studied by thermogravimetric analysis-Fourier transform infrared spectroscopy in argon and in air. It is found that in an inert atmosphere the presence of residual carbon inhibits the formation of the perovskite structure. In air the evolution of volatile compounds such as alcohols, esters, ethers and CO2 at temperatures above 300 degrees C indicate that polymerization is still going on during the thermal decomposition of the precursor.