Abstract
The surfaces of graphene oxide (GO) sheets were coated with fiber-like copper phthalocyanine (CuPc) by use of a solvothermal process. The product, GO@ CuPc, was used as a filler in high-performance poly(arylene ether nitrile) (PEN) composites. Films of the composites had high thermal stability, and glass-transition temperatures in the range 170–182°C. Thermogravimetric analysis revealed their initial decomposition temperatures were in the range 470–483°C. Scanning electron microscopy showed that dispersion of GO@ CuPc in PEN was much better than that of unmodified GO; this can be attributed to relatively strong interaction between GO@CuPc and the PEN matrix. All the composite films were highly flexible and had enhanced mechanical properties. Tensile strengths of the composites were as high as 89 MPa in the presence of 1 wt.% GO@CuPc, an increase of 20% compared with pure PEN film. Dielectric constants of the composite films were as high as 52 at 100 Hz when the GO@CuPc content was 5%. Because of these excellent mechanical and dielectric properties, PEN/GO@CuPc composites have much potential for use as film capacitors.
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Acknowledgements
The authors wish to thank the National Natural Science Foundation of China (Nos. 51173021, 51373028, 51403029), the “863” National Major Program of High Technology (2012AA03A212), and South Wisdom Valley Innovative Research Team Program (2013B6011) for financial support of this work.
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Li, J., Pu, Z., Wang, Z. et al. High Dielectric Constants of Composites of Fiber-Like Copper Phthalocyanine-Coated Graphene Oxide Embedded in Poly(arylene Ether Nitriles). J. Electron. Mater. 44, 2378–2386 (2015). https://doi.org/10.1007/s11664-015-3698-4
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DOI: https://doi.org/10.1007/s11664-015-3698-4