Abstract
The feasibility of controlling or influencing the microstructure and properties of lead zirconate titanate (PZT) films, powders, and ceramics through the addition of high molecular weight organic polymers during solgel processing has been investigated and described in this paper and a companion paper6. The adsorption of linear or branched organic polymers on precipitating sol nano-particles, (or vice versa) should affect the microstructure of gels and produce materials with interesting properties. The goal of this study was to investigate the effect of polyethylene glycol (molecular weight= 2000) and polyethylene oxide (molecular weight= 8,000,000) on the sol-gel processing, structure, and properties of PZT powders and sintered ceramics formed from these powders by calcining at 650°C and 900°C (i.e., above the thermolysis temperature of the polymers). Several characterization and analytical techniques have been utilized in this investigation. These include FTIR, XRD, SEM/EDAX, density, and weight loss measurements. The results and observations suggest that PEO & PEG polymers influence the final properties of sol-gel prepared PZT powders and derived ceramics.
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