Abstract
The thermal stability of poly(methyl methacrylate) (PMMA) composites with the two fullerenes C60 and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM), was studied over the whole composition range under nitrogen (N2) and air atmosphere using dynamic thermogravimetric analysis (TGA). The aim of this study was to compare the thermal stabilization effect of both fullerenes on PMMA. When compared with pure PMMA, both C60 and PCBM increase substantially the thermal degradation temperature of the corresponding composites, both in nitrogen and air atmospheres. The amounts of C60 and PCBM in the PMMA composites can be successfully determined along the whole composition range using TGA. The initial amounts of fullerene present in the composites correlates linearly with the residual mass values obtained above 450 °C in nitrogen and with the residual mass values observed at the temperatures of transition from the first to the second decomposition steps in air. There are no significant differences between the thermal stabilization effects of C60 and PCBM in both atmospheres (nitrogen and air).
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Acknowledgments
This work was supported by the Portuguese Foundation for Science and Technology (FCT) through the program PEst-C/CTM/LA0025/2013 (Strategic Project—LA 25—2013–2014) and by the European Regional Development Fund (FEDER) through the program COMPETE (Project EXPL/CTM-POL/0933/2012).
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Gaspar, H., Fernandes, L., Pereira, P. et al. Enhanced thermal stability of poly(methyl methacrylate) composites with fullerenes. Polym. Bull. 72, 1775–1786 (2015). https://doi.org/10.1007/s00289-015-1370-z
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DOI: https://doi.org/10.1007/s00289-015-1370-z