Degradation behavior and kinetic study of ABS polymer |
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| Authors: | H Polli L A M Pontes A S Araujo Joana M F Barros Jr" target="_blank">V J FernandesJr |
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| Institution: | (1) UNIFACS - Department of Chemical Engineering, Av. Cardeal da Silva, 132, 40.220-141 Salvador, BA, Brazil;(2) Department of Chemistry, Federal University of Rio Grande do Norte, CP 1662, 59078-970 Natal, RN, Brazil |
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| Abstract: | The degradation kinetics of the ABS terpolymer (acrylonitrile-butadiene-styrene) was investigated by means of thermogravimetric
analysis. The samples were heated from 30 to 900°C in nitrogen atmosphere applying three different heating rates: 5, 10 and
20°C min−1. The Vyazovkin model-free kinetic method was used to calculate the activation energy (E) of the degradation process as a function of conversion and temperature. Between 20 and 80% of conversion, E was calculated
and the figures were: for ABS GP, E is 204.5±11.5 kJ mol−1 (medium value); for ABS HI, E is 239.0±9.8 kJ mol−1; for ABS HH, E is 242.4±5.4 kJ mol−1. |
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| Keywords: | acrylonitrile-butadiene-styrene (ABS) model-free kinetics thermal degradation thermogravimetry |
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