Alkylated and restored graphene oxide nanoribbon-reinforced isotactic-polypropylene nanocomposites

Simultaneously improving the mechanical and electrical properties of poly(vinyl alcohol) composites by high-quality graphitic nanoribbons

“… Nanocarbon Type I D /I G Fabrication method Ref. Graphene oxide 1.47 Liquid-phase oxidation 32 Graphene 0.24–0.4 Mechanical exfoliation 32 MWCNT 0.65 CVD 33 MWCNT 0.3 CVD 44 Graphene nanoribbon 1.6 Liquid-phase oxidation 44 Graphene nanoribbon 0.82–1.1 Liquid-phase oxidation 26 Graphene nanoribbon 1.5–2 Liquid-phase oxidation 27 R-CNT 0.65 Liquid-phase oxidation This work GNR 0.27 Gas-phase oxidation This work …”

“…Therefore, the exceptional strength of inner graphene cylinders in MWCNTs is futile, while the inter-tube slip within the concentric nanotube cylinders may lead to a ‘sword-in-sheath’ type failure 17 , 19 . Actually, MWCNTs can be exfoliated into single or few-layered graphene nanoribbons via in-situ unzipping or intercalation-exfoliation approaches 20 , 21 , which may pave new ways to fully utilize the inner walls and thus maximize their load-bearing ability for polymer composites 19 , 22 – 26 . Among those approaches for unwrapping MWCNTs, chemical unzipping using strong oxidants ( e .…”

Accordion-like graphene by a facile and green synthesis method reinforcing polyolefin nanocomposites

“…Obviously, the polyolen/M-LTRGO composites displayed best thermal stability as compared to their counterparts; the thermal decomposition temperature of T d20 improved 35 C, 33 C and 21 C for a PP-sp179, PPR, and LLDPE matrix, respectively. The reason that the polyolen/M-LTRGO shows better thermal stability than the parallel composites is the huge interfacial area and the strong hydrophobichydrophobic interactions 2,25,55 between polyolen and the M-LTRGO nanocomposites obtained via the double screw melting blending technology, as mentioned in Fig. 8-10.…”

“…Ma et al 1 reported polypropylene-gra-HTRGO that manifested an improved compatibility with graphene-based polypropylene nanocomposites synthesized via a melting blending process. The alkylated modifying to GO sheets [23][24][25] using a molecular design provided a facile, compatibility improving route to synthesise the polyolen/GO composites mainly through solution compounding due to the aggregation of MGO. As above mentioned, most of the previous-related studies have focused on the surface modication of graphene or GO to improve the compatibility between the graphene lamella and polymer components.…”

Physico‐mechanical properties of nano‐polystyrene‐decorated graphene oxide–epoxy composites

“…Therefore, graphene is a basic building block of graphitic materials having all dimensionalities and used in the synthesis of a variety of composite blend films and polymer nanocomposites. However, graphene sheets have a high specific surface area, and tend to form irreversible agglomerates or even restack to form graphite through van der Waals interactions . So, many scientists have prepared hybrid nanostructures of GO with different organic and inorganic materials to overcome this problem of GO.…”