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Spectroscopic study of poly(dimethylsiloxane) ZnO nanocomposites exposed to proton irradiation

In this study poly(dimethylsiloxane) (PDMS) nanocomposites with 1wt% of zinc oxide (ZnO) and 1wt%of silanized ZnO nanoparticles were prepared through cross-linking reaction. The prepared samples were irradiated under vacuum at room temperature with a 2 MeV proton beam with fluences in the 1013–1015 cm
2 range. The influence of nanoparticles on the cross- linking processes and structural degradation of irradiated PDMS nanocomposites was investigated using Raman and Fourier transform infrared spectroscopy (ATR). The analysis of vibrational spectra has shown that prepared PDMS nanocomposites have higher resistance to proton irradiation in comparison to pristine PDMS. Under the highest proton irradiation fluence (1015 cm
2) PDMS with 1% ZnO provided the best radiation protection.

cross-linking ; nanocomposites ; poly(dimethylsiloxane) ; proton irradiation

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