Modification of graphene with silica nanoparticles for use in hybrid network formation from epoxy, novolac, and epoxidized novolac resins by sol-gel method: Investigation of thermal properties

Thermal stability of hybrid composites prepared from epoxy, novolac, and epoxidized-novolac resins and also modified graphene oxide (SFGO) was studied. SFGO was prepared by covering graphene oxide with silica nanoparticles and a bifunctional silane modifier. The first hybrid was prepared from SFGO a...

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Bibliographic Details
Published inExpress polymer letters Vol. 12; no. 3; pp. 187 - 202
Main Authors Mousavi, A., Roghani-Mamaqani, H., Salami-Kalajahi, M., Shahi, S., Abdollahi, A.
Format Journal Article
LanguageEnglish
Published Budapest Budapest University of Technology and Economics, Faculty of Mechanical Engineering, Department of Polymer Engineering 01.03.2018
Budapest University of Technology
Subjects
Carbon
Chemical industry
Dielectric properties
epoxidized novolac resin
Epoxy resins
Flame retardants
Fourier transforms
Graphene
Hybrid composites
Infrared analysis
Infrared spectroscopy
Mechanical properties
Methods
Nanocomposites
Nanoparticles
Network formation
Polymer composites
Polymer matrix composites
Polymerization
Polymers
silica nanoparticle
Silicon dioxide
sol-gel
Sol-gel processes
Thermal stability
Thermodynamic properties
Thermogravimetric analysis
X ray photoelectron spectroscopy
X-ray diffraction
Iran
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Summary:Thermal stability of hybrid composites prepared from epoxy, novolac, and epoxidized-novolac resins and also modified graphene oxide (SFGO) was studied. SFGO was prepared by covering graphene oxide with silica nanoparticles and a bifunctional silane modifier. The first hybrid was prepared from SFGO and silane-modified epoxy resin. The second one was prepared from SFGO, and silane-modified epoxy and novolac resins. The third hybrid was formed from SFGO, silane-modified novolac, and epoxidized novolac resins. Fourier transform infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and thermogravimetric analysis (TGA) results showed that modification of graphene oxide was carried out successfully. TGA results show that degradation temperature and char residue of resins were increased through their incorporation into hybrid network with SFGO. In addition, the most increase of char residue was observed for the hybrid composites formed from SFGO and modified novolac and epoxy resins.
ISSN:1788-618X
1788-618X
DOI:10.3144/expresspolymlett.2018.18