Functionalization of Graphene Oxide with Polysilicone: Synthesis, Characterization, and Its Flame Retardancy in Epoxy Resin

A novel polysilicone flame retardant (PMDA) has been synthesized and covalently grafted onto the surfaces of graphene oxide (GO) to obtain GO-PMDA. The chemical structure and morphology of GO-PMDA was characterized and confirmed by the Fourier transform infrared (FTIR) spectroscopy, X-ray photoelect...

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Autor principal:	Jiangbo Wang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	graphene oxide polysilicone functionalization flame retardancy epoxy resin Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/eb5c09aa332340bb9142bb9bbe413c76
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spelling	oai:doaj.org-article:eb5c09aa332340bb9142bb9bbe413c762021-11-11T18:49:21ZFunctionalization of Graphene Oxide with Polysilicone: Synthesis, Characterization, and Its Flame Retardancy in Epoxy Resin10.3390/polym132138572073-4360https://doaj.org/article/eb5c09aa332340bb9142bb9bbe413c762021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/21/3857https://doaj.org/toc/2073-4360A novel polysilicone flame retardant (PMDA) has been synthesized and covalently grafted onto the surfaces of graphene oxide (GO) to obtain GO-PMDA. The chemical structure and morphology of GO-PMDA was characterized and confirmed by the Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectrometer (XPS), atomic force microscope (AFM), and thermogravimetric analysis (TGA). The results of dynamic mechanical analysis (DMA) indicated that the grafting of PMDA improved the dispersion and solubility of GO sheets in the epoxy resin (EP) matrix. The TGA and cone calorimeter measurements showed that compared with the GO, GO-PMDA could significantly improve the thermal stability and flame retardancy of EP. In comparison to pure EP, the peak heat release rate (pHRR) and total heat release (THR) of EP/GO-PMDA were reduced by 30.5% and 10.0% respectively. This greatly enhanced the flame retardancy of EP which was mainly attributed to the synergistic effect of GO-PMDA. Polysilicone can create a stable silica layer on the char surface of EP, which reinforces the barrier effect of graphene.Jiangbo WangMDPI AGarticlegraphene oxidepolysiliconefunctionalizationflame retardancyepoxy resinOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3857, p 3857 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	graphene oxide polysilicone functionalization flame retardancy epoxy resin Organic chemistry QD241-441
spellingShingle	graphene oxide polysilicone functionalization flame retardancy epoxy resin Organic chemistry QD241-441 Jiangbo Wang Functionalization of Graphene Oxide with Polysilicone: Synthesis, Characterization, and Its Flame Retardancy in Epoxy Resin
description	A novel polysilicone flame retardant (PMDA) has been synthesized and covalently grafted onto the surfaces of graphene oxide (GO) to obtain GO-PMDA. The chemical structure and morphology of GO-PMDA was characterized and confirmed by the Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectrometer (XPS), atomic force microscope (AFM), and thermogravimetric analysis (TGA). The results of dynamic mechanical analysis (DMA) indicated that the grafting of PMDA improved the dispersion and solubility of GO sheets in the epoxy resin (EP) matrix. The TGA and cone calorimeter measurements showed that compared with the GO, GO-PMDA could significantly improve the thermal stability and flame retardancy of EP. In comparison to pure EP, the peak heat release rate (pHRR) and total heat release (THR) of EP/GO-PMDA were reduced by 30.5% and 10.0% respectively. This greatly enhanced the flame retardancy of EP which was mainly attributed to the synergistic effect of GO-PMDA. Polysilicone can create a stable silica layer on the char surface of EP, which reinforces the barrier effect of graphene.
format	article
author	Jiangbo Wang
author_facet	Jiangbo Wang
author_sort	Jiangbo Wang
title	Functionalization of Graphene Oxide with Polysilicone: Synthesis, Characterization, and Its Flame Retardancy in Epoxy Resin
title_short	Functionalization of Graphene Oxide with Polysilicone: Synthesis, Characterization, and Its Flame Retardancy in Epoxy Resin
title_full	Functionalization of Graphene Oxide with Polysilicone: Synthesis, Characterization, and Its Flame Retardancy in Epoxy Resin
title_fullStr	Functionalization of Graphene Oxide with Polysilicone: Synthesis, Characterization, and Its Flame Retardancy in Epoxy Resin
title_full_unstemmed	Functionalization of Graphene Oxide with Polysilicone: Synthesis, Characterization, and Its Flame Retardancy in Epoxy Resin
title_sort	functionalization of graphene oxide with polysilicone: synthesis, characterization, and its flame retardancy in epoxy resin
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/eb5c09aa332340bb9142bb9bbe413c76
work_keys_str_mv	AT jiangbowang functionalizationofgrapheneoxidewithpolysiliconesynthesischaracterizationanditsflameretardancyinepoxyresin
_version_	1718431738590396416

Functionalization of Graphene Oxide with Polysilicone: Synthesis, Characterization, and Its Flame Retardancy in Epoxy Resin

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