DSC study of stabilizing effect of antioxidant mixtures in styrene-butadiene rubber |
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| Authors: | Zuzana Cibulková Andrea Černá Peter Šimon Ján Uhlár Karol Kosár Peter Lehocký |
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| Affiliation: | 1.Institute of Physical Chemistry and Chemical Physics, Faculty of Chemical and Food Technology,Slovak University of Technology,Bratislava,Slovak Republic;2.Research Institute of Chemical Technology (VUCHT a.s.),Bratislava,Slovak Republic |
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| Abstract: | The type of cooperation between antioxidants in the binary mixtures of four substituted diphenylamines and phenotiazine in the stabilization of styrene-butadiene rubber has been tested. Thermooxidation of the samples has been studied by differential scanning calorimetry under non-isothermal conditions. The protection factors of the individual stabilizers and their mixtures were determined. The synergy factors were applied to asses the type of cooperation of antioxidants in the mixtures. From their values it can be concluded that the type of cooperation depends on temperature. The highest synergistic effect has been observed for the mixture of phenotiazine and [4-(1-methyl-1-phenyl-ethyl)-phenyl]-phenylamine. |
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