Features of the thermal behavior of PMMA/C60 film composites

Abstract

Polymethylmethacrylate-based film composites containing small additives of fullerenes (up to 3 wt %) are obtained. The thermal behavior of the obtained materials is studied by DSC in the temperature range from 25 to 130°C. It is found that the character of the DSC curve depends on the composite composition. For films containing up to 0.1 wt % C₆₀, one glass transition temperature (T_g^soft) is observed, while in the case of films with a higher concentration of the filler, two glass transition temperatures (T_g^soft and T_g^solid) are observed. It is found that the dependence of T_g^soft value on the content of fullerenes is nonmonotonic with a minimum at 0.5 wt % of C60.