El Hadad, AmirCarbonell, DiógenesBarranco, VioletaJiménez Morales, AntoniaCasal, BlancaGalván Sierra, Juan Carlos2013-06-122013-06-122011-12-01Colloid and Polymer Science, (2011), 289(17-18), 1875-1883.0303-402X (Print)1435-1536 (Online)https://hdl.handle.net/10016/17129Organic-inorganic hybrid materials suitable for the development of sol&-gel coatings for metallic surfaces were prepared by hydrolysis and condensation of gamma-methacryloxypropyltrimethoxysilane (MAPTMS) and tetramethyl orthosilicate (TMOS). The hydrolysis of MAPTMS/TMOS was carried out in an ethanol/water solution. The prehydrolysis stage of MAPTMS/TMOS system was monitored by Fourier transform infrared spectroscopy (FTIR) and liquid-state 29Si and 13C nuclear magnetic resonance (29Si and 13C NMR). FTIR analysis indicated that the hydrolysis of MAPTMS/TMOS was accomplished as far as the (SiOMe) band corresponding to unhydrolyzed silane disappeared. The concentration of the alkoxy groups and the extent of self-condensation of mono-, di-, and trisubstituted siloxanes (T species) in the sol were estimated by using liquid-state 29Si NMR spectroscopy. The hydrolysis of the prepared sol was also evaluated by liquid-state 13C NMR spectroscopy. The results indicated that under the adopted synthesis strategy conditions, the hydrolysis process requires 4 h to be completed.8application/pdfeng© SpringerSol-gelSilicaOrganic-inorganic materialsOrganopolysiloxane precursorsSi-29 and C-13 NMRFTIRStructural characterizationresearch articleMaterialesQuímicaIngeniería Industrial10.1007/s00396-011-2504-yopen access187517-181883Colloid and Polymer Science289AR/0000009577