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Authors Aram, E. ; Ehsani, M. ; Khonakdar, H. A. ; Jafari, S.H. ; Nouri, N. R.
Title Functionalization of graphene nanosheets and its dispersion in PMMA/PEO blend: Thermal, Electrical, Morphological and rheological analyses
Date 02.03.2016
Number 49601
Abstract Graphene nanoplatelet (GnP) was chemically functionalized by amine groups for improvement of compatibility in poly(methyl methacrylate) (PMMA)/poly(ethylene oxide) (PEO) blend. PMMA/PEO (90/10) nanocomposites with non-functionalized GnP and functionalized GnP (FGnP) were prepared by solution casting method. Successful grafting of amine groups on the GnP surface was confirmed by Fourier transform infrared (FT-IR) and X-ray diffraction (XRD) analysis. The Transmission electron microscopy (TEM) images showed that the dispersion state of FGnP was better than that of GnP in PMMA/PEO nanocomposites. The effects of FGnP and GnP on rheological, thermal and electrical properties of PMMA/PEO nanocomposites were investigated by various methods. The results indicated that the FGnP-based nanocomposites had higher storage modulus, glass transition temperature and thermal stability as compared to the GnP-based nanocomposites. The electrical conductivity of the nanocomposites with FGnP was better than that of GnP-based nanocomposites. The higher conductivity was attributed to homogeneous and well dispersion state of FGnP in PMMA/PEO nanocomposites.
Publisher Fibers and Polymers
Wikidata
Citation Fibers and Polymers 17 (2016) 174-180
DOI https://doi.org/10.1007/s12221-016-5827-y
Tags graphene para-phenylene diamine poly(methyl methacrylate)/poly(ethylene oxide) nanocomposites dispersion of gnp

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