The kinetic of thermal degradation of poly styrene-co-acrylonitrile (SAN) /OMT nanocomposites using Flynn Wall Ozawa method
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Faculty of Engineering, Chemical Engineering Department, Azarbaijan Shahid Madani University, Tabriz, Iran Postal code: 5375171379 Email:
In this study the modified montmorillonite (OMT) was added to poly styrene-co-acrylonitrile (SAN) and the SAN/OMT nanocomposites were prepared in four compositions, by the melt mixing method. The situation of the layers inside the matrix of the nanocomposites was confirmed by XRD and TEM analysis.Then, the thermal degradation of SAN/OMT nanocomposites under nitrogen purge at different heating rates was investigated. In this study, the activation energies of SAN/OMT nanocomposites were calculated using Flynn Wall Ozawa method and it was concluded that with increasing of the OMT content in nanocomposite, the activation energy values were decreased. It was concluded that clay particles or layers take part in the thermal degradation mechanisms and they must not be regarded as inert materials.
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