Green synthetic route of carbon quantum dot-reinforced graphene oxide-poly(vinylidene fluoride-co-hexa fluoropropylene) nanocomposites: Toward high dielectric constant and suppressed loss

摘要

A simple and green method was developed to fabricate carbon quantum dot@ graphene oxide filled poly (vinylidene fluoride-co-hexa-fluoropropylene) [CQD@GO-P(VDF-HFP)] nanocomposite films via solution casting technique. The synthetic approach was to bring CQD from bilva leafs, a renewable and sustainable resource. The effect of CQD on dielectric properties, dielectric constant, and dielectric loss in the presence of GO along with P (VDF-HFP) matrix were investigated. The result showed that the nanocomposites having 1.5 wt % of CQD@GO-P(VDF-HFP) with higher dielectric constant (approximate to 144) at 100 Hz and suppressed loss (<1) at 1000 Hz, which is well supported by field emission scanning electron microscopy (FESEM) study. The FESEM study shows a river iceland morphology with a channel-like structure along with voids and pores that may provide a conducting network, which tends to have Maxwell Wagner-Sillars or interfacial polarization results in a high-end properties outcome. Furthermore, the suppressed loss enhanced the possibility of end use performance of CQD@GO-P(VDF-HFP) matrix with a referral memorandum of percolation theory. Thus, the present work demonstrated a new approach to develop high dielectric constant and negligible loss materials in the field of embedded devices for electronic industries through green synthetic approach. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47850.