Hernández-Escolano, M.Ramis, X.Jiménez Morales, AntoniaJuan-Díaz, M.Suay, J.2015-05-042015-05-042012-02Journal of Thermal Analysis and Calorimetry (2012). 107(2), 499-5081388-6150 (print)1572-8943 (online)https://hdl.handle.net/10016/20587A set of materials has been prepared by sol-gel process containing different quantities of hydroxyapatite (0, 2.5 and 5% HAp w/w) using as silica precursors glycidyloxypropyltrimethoxysilane (GPTMS) and triethoxyvinylsilane (VTES). In order to optimize the curing process to obtain sintherized systems (inorganic network) or hybrid systems (organic&-inorganic) a TG and FTIR studies have been developed and degradation kinetic triplet parameters were obtained (the activation energy, pre-exponential factor, and function of degree of conversion). The kinetic study was analyzed by means of an integral isoconversional non-isothermal procedure (model free), and the kinetic model was determined by the Coats&-Redfern method and through the compensation effect (IKR). All the systems followed the n = 6 kinetic model. The addition of HAp increases the thermal stability of the systems. The isothermal degradation was simulated from non-isothermal data, and the curing process could be defined to obtain the two types of materials. Temperature under 250 °C allows the formation of hybrids networks.10application/pdfeng© 2011 Akadémiai Kiadó. Springer NetherlandsSol gelHApVTESGPTMSKineticsresearch articleMateriales10.1007/s10973-011-1553-2open access4992508Journal of Thermal Analysis and Calorimetry107AR/0000009707