Enhancement of mechanical properties of natural rubber with maleic anhydride grafted liquid polybutadiene functionalized graphene oxide

Preparation and Characterization of Graphene Oxide‐Grafted Hexadecanol Composite Phase‐Change Material for Thermal Energy Storage

“…[42] To further investigate the chemical characteristics of GOg-HD,X PS analysis was also performed and XPS surveys of GO and GO-g-HD,w ith single-scan spectra with high resolution in the C1sa reas,a re shown in Figure2.F rom the results in Figure 2a , and OÀC=O (288.9 eV) functional groups. [35,43] In Figure 2c,t he intensity of oxygen-containing functional groups dramatically diminished due to the increased amount of methylene groups from HD side chains.T his result, which is similar to that obtained with GO-MLPB, [34] strongly reveals that HD is effectively graftedo nto GO sheets by covalent bonds.T he proposed mechanism of HD grafting on GO is shown in Figure 3.…”

“…However, for GO‐ g ‐HD, the overlapping and interlocking GO sheets are wrapped or clothed by HD very well and form a soft and fluffy surface. Such observations strongly suggest that GO sheets are successfully grafted by HD, and the more bonded HD results in the higher heat storage capacities of GO‐ g ‐HD, as confirmed by DSC analysis. The covalent bonds are strong, which prevents the escape of HD, and the repulsion between HD molecules is strong enough to suppress the aggregation of GO sheets during fabrication.…”

“…In Figure c, the intensity of oxygen‐containing functional groups dramatically diminished due to the increased amount of methylene groups from HD side chains. This result, which is similar to that obtained with GO‐MLPB, strongly reveals that HD is effectively grafted onto GO sheets by covalent bonds. The proposed mechanism of HD grafting on GO is shown in Figure .…”

“…For example, to reinforce the mechanical properties of natural rubber (NR), Wu et al. synthesized NR/GO‐MLPB composites by mixing covalently functionalized GO, which was grafted with maleic anhydride‐grafted liquid polybutadiene (GO‐MLPB), incorporating NR . Štengl et al.…”

“…synthesized NR/GO-MLPB composites by mixing covalently functionalized GO,w hich was graftedw ith maleica nhydride-grafted liquid polybutadiene (GO-MLPB), incorporating NR. [34] Š tengl et al prepared carboranoyl-functionalized GO by converting GOÀCOOH groups into GOÀCOCl with SOCl 2 and then grafting with Li[1,2-C 2 B 10 H 11 ]. [35] Wenetal.…”