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Carbon-loaded porous composites produced by matrix carbonization of poly(vinylidene fluoride)

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Abstract

Using poly(vinylidene fluoride) (PVDF) carbonization at 750° C in fine-particle silica and its mixtures with graphite, we have prepared carbon-loaded porous composites which offer benzene absorption from 0.90 to 1.52 ml/g, compressive strength of 6 MPa, and Brinell hardness of up to 18 MPa. We observed the formation of various nanostructures (spheres, spherical segments, and layered platelets) and sizes (several to hundred nanometers). X-ray photoelectron and energy dispersive x-ray spectroscopy data indicate the presence of C-C, C =C, CO, COO, and CHF groups on the carbon surface. X-ray emission spectroscopy data show that the silica matrix composite prepared via PVDF carbonization contains small carbon clusters weakly bonded to the matrix. The silica/graphite matrix composite contains multilayer carbon films strongly bonded to the matrix. The OK α spectra of both composites are similar to the spectrum of pure SiO2.

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Correspondence to L. V. Dubrovina.

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Original Russian Text © L.V. Dubrovina, V.M. Ogenko, O.V. Naboka, V.A. Dimarchuk, Ya.V. Zaulichnyi, O.Yu. Khizhun, 2008, published in Neorganicheskie Materialy, 2008, Vol. 44, No. 7, pp. 799–807.

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Dubrovina, L.V., Ogenko, V.M., Naboka, O.V. et al. Carbon-loaded porous composites produced by matrix carbonization of poly(vinylidene fluoride). Inorg Mater 44, 697–704 (2008). https://doi.org/10.1134/S0020168508070054

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  • DOI: https://doi.org/10.1134/S0020168508070054

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