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The epoxy nanocomposites with similar amines(CH_3(CH_2)_(17)NH_2 and CH_3(CH_2)_(17)N(CH_3)_3CI) treated montmorillonite clays have been investigated by wide-angle X-ray scattering,transmission electron microscopy(TEM),differential scanning calorimetry(DSC) and thermal gravimetric analysis(TGA).Different nanocomposite structures,intercalation and exfoliation were formed by the reaction of octadecyltrimethylammonium chloride-exchanged and octadecylamine-exchanged clays with epoxy resin and phenalkamine as the curing agent,respectively.Results showed that the exfoliated nanocomposite can be obtained when octadecylamine with the lower polarity was used as a modifier.However,the intercalated nanocomposite can be obtained when octadecyltrimethylammonium chloride with higher polarity was used as a modifier.
The epoxy nanocomposites with similar amines (CH_3 (CH_2) _ (17) NH_2 and CH_3 (CH_2) _ (17) N (CH_3) _3CI) have been investigated by wide-angle X-ray scattering, transmission electron microscopy TEM), differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA). Different nanocomposite structures, intercalation and exfoliation were formed by the reaction of octadecyltrimethylammonium chloride-exchanged and octadecylamine-exchanged clays with epoxy resin and phenalkamine as the curing agent, respectively .Results showed that the exfoliated nanocomposite can be obtained when octadecylamine with the lower polarity was used as a modifier. However, the intercalated nanocomposite can be obtained when octadecyltrimethylammonium chloride with higher polarity was used as a modifier.