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Abstract
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A novel epoxy nanocomposite composed of epoxidized novolac (ENR), epoxidized polystyrene (EPSt), and nanoclay
was fabricated and characterized successfully. For this purpose, the novolac was epoxylated using a substitution nucleophilic
reaction between hydroxyl group of novolac and chlorine group of epichlorohydrin. The EPSt was synthesized
through the oxidizing of an allylated PSt (All-PSt). A mixture of ENR (70 wt%), EPSt (20 wt%) and Cloisite® 20A (5 wt%)
was cured using ethylenediamine (EDA; 5 wt%) to afford a C-ENR-EPSt/clay nanocomposite. The transition electron microscopy
(TEM) as well as powder X-ray diffraction (XRD) analysis revealed that the fabricated nanocomposite has an exfoliated
structure. As the thermal property studies results, the addition of EPSt as well as Cloisite® 20A has synergistic effect
on the thermal stability of the ENR resin.
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