Naslov
Influence of proton irradiation on the structure and stability of poly(dimethylsiloxane) and poly(dimethylsiloxane)- nanodiamond composite

Autori
Borjanović, Vesna ; Bistričić, Lahorija ; Vlasov, Igor ; Furić, Krešimir ; Zamboni, Ivana ; Jakšić, Milko ; Shenderova, Olga

Izvornik
Journal of vacuum science & technology. B, Microelectronics and nanometer structures processing, measurement and phenomena (1071-1023) 27 (2009), 6; 2396-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
poly(dimethylsiloxane); nanocomposite; nanodiamond; proton irradiation

Sažetak
In the present study, pure poly(dimethylsiloxane) (PDMS) polymer and PDMS-detonation nanodiamond (PDMS-DND) composite with 1wt.% of DND were irradiated under vacuum at room temperature with a 2 MeV proton beam with fluences in the 1013 to 1015 cm-2 range. Modification of the structures and properties of the pure polymer and the nanocomposite material were monitored as a function of proton fluence. Specifically, the vibrational dynamics of pure PDMS and PDMS-DND nanocomposites, both unirradiated and irradiated samples, were investigated using Raman and Fourier transform infrared spectroscopy (FTIR). The Raman and FTIR spectra of the PDMS and PDMS-DND composites exhibit an overall reduction in intensity of all vibrational bands of the irradiated samples. The changes in relative intensities of the characteristic vibrational bands as a function of irradiation fluence indicate that cleavage of the backbone (Si-O-Si) PDMS chains was most pronounced. Importantly, structural degradation of PDMS-DND composites takes place at an order of magnitude higher fluence than for pure PDMS, indicating the potential of using DND-based polymer composites for application in high radiation environments. The appearance of strong photoluminescence (PL) following irradiation was more pronounced for PDMS-DND composites as compared to pure PDMS.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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