Abstract
This paper describes the effect of calcination temperature on the phase composition, chemical composition, and morphology of ZrO2 and Al2O3 powders modified with 3-aminopropyltriethoxysilane (APTES). Both ceramic powders were modified by etching in piranha solution, neutralization in ammonia water, reaction with APTES, ultrasonication, and finally calcination at 250, 350, or 450 °C. The obtained modified powders were characterized using X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, particle size distribution (PSD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM/EDS), and thermogravimetric analysis (TGA).
Highlights
This paper describes the effect of calcination temperature on the phase composition, chemical composition, and morphology of ZrO2 and Al2 O3 powders modified with 3-aminopropyltriethoxysilane (APTES)
1 shows the X-ray diffraction (XRD) patterns of APTES-coated zirconia powders calcined at difFigure 1 shows the XRDshowed patternsa of APTES-coated powders calcined at ferent temperatures
Heat treatment has no apparent effect on the phase composition determined by XRD
Summary
This paper describes the effect of calcination temperature on the phase composition, chemical composition, and morphology of ZrO2 and Al2 O3 powders modified with 3-aminopropyltriethoxysilane (APTES). One possible method to ensure this is to modify the ceramic surface by introducing functional groups that improve adhesion, e.g., -SH, -CN-COOH, -NH2 , and -SiH4 [14]. SCAs are introduced to modify the usually highly polar ceramic surface, which causes ceramic fillers to aggregate in most hydrophobic polymers [20]. This poor dispersion of Academic Editor: Andrzej Dzierwa. Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations
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