Development of polymer composites using modified, high-structural integrity graphene platelets

Effects of poly(ethyleneimine) adsorption on graphene nanoplatelets to the properties of NR/EPDM rubber blend nanocomposites

“…However, it was found that the intensity ratio from I d to I g of non-covalent-treated GNPs-PEI was markedly decreased (I d /I g 0.250) compared to uGNPs (I d /I g of 0.314). The lower I d /I g ratio of GNPs-PEI was corresponded to a high structural integrity of modified GNPs, as mentioned in previous work [11]. Hence, the non-covalent treatment performed to GNPs not only introduced interruptions in platelet's stacks and defects, but also improved the structure of modified GNPs due to PEI adsorption.…”

“…Modifying the surface of graphene nanoplatelets can be achieved, either by covalent or non-covalent functionalization methods [10,11]. Covalent treatment is severely prone to damaging the intrinsic properties of graphene, while non-covalent treatment normally preserves the pristine structure and properties of graphene.…”

Effect of Graphene Nanoplatelets (GNPs) on Tribological and Mechanical Behaviors of Polyamide 6 (PA6)

“…However, referring to Fig. 2, in addition to the two reflections as seen in the PA6/GNP composites a other reflection was also detected at 2θ=26° which was related to the GNP [11]. According to these results, GNPs changed crystal structure of all composites.…”

Enhanced toughness and glass transition temperature of epoxy nanocomposites filled with solvent-free liquid-like nanocrystal-functionalized graphene oxide

“…Two reasons can account for this enhancement of T g . Firstly, the ultra-high surface area of the liquid-like nanocrystal-functionalized graphene oxide and strong interface can effectively hinder the matrix chains' mobility [37]. The second one is that the residual silicon hydroxyl groups in liquid-like nanocrystal-functionalized graphene oxide can react with epoxy matrix and form the chemical crosslinking shown in Fig.…”