Authors:S. Gomes, F. Margaça, L. Ferreira, I. Miranda Salvado, and A. Falcão
Hybrid materials were prepared by γ-irradiation of a mixture of polydimethylsiloxane (PDMS), with tetraethylorthosilicate
(TEOS) and zirconium propoxide (PrZr), using a 60Co γ source, without any addition of solvents. Thermogravimetry, differential scanning calorimetry and X-ray diffraction measurements
showed that the obtained hybrids are amorphous materials of the nanocomposite type. The results highlighted the different
influence of each of the metallic alkoxides on the hybrid structure. The material rupture temperature, associated with the
degradation of the organic component, depends mainly on the TEOS content, whereas the inorganic component structural stability
depends on the relative PrZr content in the alkoxides mixture.