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Abstract
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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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