Abstract
Graphene has been considered an ideal nanoscale reinforced phase for preparing high-performance composites, but the poor compatibility and weak interfacial interaction with the matrix have limited its application. Here a highly effective and environmentally friendly method for the functionalization of graphene is proposed through an interaction between as-exfoliated graphene and (3-aminopropyl) triethoxysilane (KH550), in which 1-butylsulfonate-3-methylimidazolium bisulfate (BSO3HMIm)(HSO4) ionic-liquids-modified graphene was prepared via an electrochemical exfoliation of graphite in (BSO3HMIm)(HSO4) solution, then (BSO3HMIm)(HSO4)-modified graphene as a precursor was reacted with amine groups of KH550 for obtaining (BSO3HMIm)(HSO4)/KH550-functionalized graphene. The final products as filler into carboxylated acrylonitrile‒butadiene rubber (XNBR) improve the dynamic mechanical properties. The improvement in the dynamic mechanical properties of the nanocomposite mainly depends on high interfacial interaction and graphene’s performance characteristics, as well as a good dispersion between functionalized graphene and the XNBR matrix.
Highlights
Nowadays, damping materials have been widely applied in the mechanical vibration field.Among the numerous damping materials, polymer composites have been extensively researched for their excellent physical and chemical properties [1,2]
The poor compatibility and weak interfacial interaction between graphene and the polymer matrix are among the most important problems to address before further application
Many methods have been used to increase the dispersion in polymer matrixes, including covalent binding with free radicals [8,9,10] and dienophiles [11,12,13], grafting through the chemistry of epoxy and hydroxyl groups of graphene oxide (GO) [14,15], and π-π interaction with organic
Summary
Nowadays, damping materials have been widely applied in the mechanical vibration field. In many reports [4,5,6,7], the uniform dispersion of carbon nanomaterials in a polymer matrix can increase the interfacial interaction and improve the dynamic mechanical properties. Liu et al [20] reported a green method to prepare ionic liquid functionalized multilayer graphene, in which ILs could be deposited on the surface of exfoliated multilayer graphene. (BSO3 HMIm)(HSO4 ) ILs-modified multilayers graphene (MLG) is an efficient platform for further grafting with KH550 to improve compatibility and interfacial interactions in the XNBR matrix. To explore the application prospects of this functionalization method, the (BSO3 HMIm)(HSO4 )/KH550-functionalized graphene was dispersed into a rubber matrix to estimate the dynamic mechanical properties
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