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Summary
A multifunctional hybrid curing element (GSD) for epichlorohydrin-modified novolac resin (ENR) was synthesized through grafting poly(amidoamine) (PAMAM)-modified silica nanoparticles (SD) on graphene oxide (GO) utilizing a hoop opening response. SD and GSD, as two completely different curing parts, had been additionally utilized in completely different contents as reinforcing fillers of ENR matrix. Fourier-transform infrared spectroscopy and thermal gravimetric evaluation (TGA) outcomes proved amine-decoration of silica nanoparticles and in addition profitable preparation of GSD. X-ray diffraction, scanning electron microscopy, and transmission electron microscopy outcomes had been utilized to research construction of the SD and GSD multifunctional curing parts and in addition the resulted composites. XRD sample of GSD exhibits two peaks at 10.1 and 21.8° which belong to attribute peaks of GO and silica nanoparticles, respectively, with weak intensities as a result of grafting of SD on the GO floor. Thermal investigation of the ready composites by TGA confirmed that curing ENR with greater contents of GSD was resulted in greater thermal properties. The ENR composite cured with 5 wt% of GSD offered the best char residue of 20.5% among the many different hybrid composites.
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