DOI: 10.3724/SP.J.1105.2014.13231

Acta Polymerica Sinica (高分子学报) 2014/014:2 PP.255-262

Preparation of Ethanolamine Functionalized Graphene and Its PVB Composites

A novel chemical functionalized graphene (FG) was synthesized through facial covalent functionalization with ethanolamine, and the effects of experiment conditions on the properties of the product were investigated in detail. The results showed that the absorbance of the product increased with increasing the content of ethanolamine, reaction temperature, pH and reaction time, while the content of N in the product decreased accordingly. It was concluded that the optimal properties of ethanolamine functionalized graphene (EFG) were achieved when the mass ratio of ethanolamine to graphite oxide (GO) was 4.0, the reaction temperature was 50 ℃, the pH was 7.0 and the reaction time was 12 h. X-ray photoelectron spectroscopy (XPS) suggested that the ethanolamine could modify graphene and reduce graphene oxide simultaneously. Subsequently, the EFG/polyvinyl butyral (PVB) composite materials were prepared by two different ways, including solution blending method and in situ reduction method. Finally, The scanning electron microcopy, conductivity test, ultraviolet and visible spectroscopy (UV-Vis) and tensile test were performed to measure the morphology and properties of the EFG/PVB composites. It was illustrated that the introduction of EFG led to an improvement in the conductivity, the ultraviolet shielding ability and mechanical properties of PVB. Compared with the material through solution blending, the composite prepared by the in situ reduction had a better performance. When the content of the EFG reached 3.0 wt%, the composite showed a conductivity of about 10-3 S·m-1, which is 10.6 higher than that of neat PVB. Meanwhile, the ultraviolet shielding ability reached 90% by only adding 1.0 wt% EFG.

Key words:Ethanolamine, Functionalization, Graphene, Polyvinyl butyral, Composite material

ReleaseDate:2014-07-21 17:05:31

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