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Preparation and characterization of polymer/inorganic nanoparticle composites through electron irradiation

Wang, Z. G., Zu, X. T., Xiang, X., Lian, J., Wang, L. M.
Journal of materials science 2006 v.41 no.7 pp. 1973-1978
Fourier transform infrared spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, air, aluminum oxide, ambient temperature, boiling, irradiation, nanocomposites, nanoparticles, photoluminescence, polymerization, polymethylmethacrylate, spectral analysis, xylene
In this paper, we report a new method to prepare the polymer/inorganic nanoparticle composites using electron irradiation-induced polymerization. The mixture of nanoparticles and MMA solution were co-irradiated by 1.6 MeV electron beam to a dose of 10, 20 and 30 kGy at a dose-rate of 60 kGy/h in air at room temperature. The products after irradiation were extracted using a soxhlet extractor with boiling xylene and investigated by X-ray diffraction (XRD), Fourier transmission infrared (FTIR), X-ray photoelectron spectroscopy (XPS), optical absorption spectra (OAP) and photoluminescence (PL). The FTIR and XPS results show that there exist some unextractable PMMA in the nanocomposites after extraction, indicating a strong interaction between the PMMA and nanoparticles. PL results show that new luminescence peaks appear at 415 and 420 nm for the nanocomposites of anatase and γ-Al₂O₃.