Self supporting poly(methyl methacrylate) (PMMA)/In 2 O 3 with varying In 2 O 3 content (1, 2, 5 and 10 wt% In 2 O 3 loading) nanocomposite films have been prepared by solvent-casting and spin casting techniques.The nanocomposite films have been structurally characterized by X-ray diffraction (XRD), and Fourier transform infrared (FTIR) spectroscopy and the results confirm the incorporation of In 2 O 3 nanoparticles in the PMMA matrix. The thermal properties of the nanocomposite films have been investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results show that the degradation of the polymer occurs at higher temperature in the presence of In 2 O 3 nanoparticles and even a small amount of In 2 O 3 nanoparticles ($1 wt%) can greatly improve the thermal stability of PMMA. The UV-visible spectra of the nanocomposite films show that the films are UV-absorbing, and highly transparent in the visible region.
Abstract. Different compositions of ethylene vinyl acetate (EVA)/multiple walled carbon nanotube (MWNT) nano-composites were prepared by melt mixing and subjected to different doses of gamma radiation. The efficiency of radiation vulcanization was analyzed by sol-gel analysis, Charlesby-Pinner parameter estimation and crosslinking density measurements. Gamma radiation induced crosslinking was found to increase with MWNT fraction in EVA-MWNT nanocomposites (p0/q0 in the range: 1.15-0.98). These results ruled out the possibility of a significant neutralization of single ionization spurs by MWNT addition. The incorporation of MWNT also resulted in increased hardness and higher density of the nano-composite matrix. The efficiency of multifunctional acrylates as crosslinking aid in the radiation-induced vulcanization of EVA-MWNT nano-composites was also investigated. The results established lower efficiency of methacrylates than of acrylates in the radiation vulcanization process.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.