Turkish Journal of Chemistry
DOI
-
Abstract
A more rapid and a versatile synthetic approach for the preparation of polyhedral silsesquioxanes (POSS) by hydrolytic condensation of organosilicon monomers in the presence of a Pt catalyst was studied. The structural properties of POSS molecules were determined by X-ray powder diffraction analysis, yielding a rhombohedral unit cell with a = 11,52796Å and \alpha = 94,9754° for octaaminopropyl-POSS, and a rhombohedral unit cell with a = 11,51421Å, \alpha = 96,7214° for octachloropropyl-POSS. The activation energies were found to be 64.8, and 89.1 kJ/mol for octaaminopropyl-POSS and octachloropropyl-POSS, respectively. The products were also characterized by Fourier transform infrared spectroscopy, ^1H and ^{13}C nuclear magnetic resonance, differential thermal analysis, and thermogravimetric analysis.
Keywords
Ceramics, Sol-gel; POSS, activation energy, Kissinger Equation
First Page
391
Last Page
399
Recommended Citation
GÜLTEK, AHMET; SEÇKİN, TURGAY; and ADIGÜZEL, HALİL İBRAHİM (2005) "Design and Characterization of Amino and Chloro Functionalized Rhombohedral Silsesquioxanes," Turkish Journal of Chemistry: Vol. 29: No. 4, Article 7. Available at: https://journals.tubitak.gov.tr/chem/vol29/iss4/7
