Thermal behaviour of styrene butadiene rubber/poly(ethylene-co-vinyl acetate) blends |
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Authors: | C K Radhakrishnan A Sujith G Unnikrishnan |
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Institution: | (1) Mohammed Abdurahiman Memorial Orphanage College, Manassery, Mokkam, Calicut, 673602, Kerala, India;(2) National Institute of Technology, Calicut, 673601, Kerala, India |
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Abstract: | The thermal behaviour of styrene butadiene rubber (SBR)/poly (ethylene-co-vinyl acetate) (EVA) blends was studied by using
thermogravimetry (TG) and differential scanning calorimetry (DSC). The effects of blend ratio, cross-linking systems and compatibilization
on the thermal stability and phase transition of the blends were analyzed. It was found that the mass loss of the blends at
any temperature was lower than that of the components, highlighting the advantage of blending SBR and EVA. The addition of
compatibilizer was also found to improve the thermal stability. DSC studies indicated the thermodynamic immiscibility of SBR/EVA
system even in the presence of the compatibilizer. This is evident from the presence of two different glass transition temperatures,
corresponding to SBR and EVA phases in both compatibilized and uncompatibilized blends. |
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Keywords: | cross-linking systems DSC poly(ethylene-co-vinylacetate) styrene butadiene rubber thermogravimetric analysis |
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