Perfluoroalkylation of graphitic carbon black: synthesis and thermal properties.

Author(s): SANSOTERA M., VENTURINI F., BERETTA S., BASSI M., PASQUALI A., BIANCHI C. L., METRANGOLO P., RESNATI G., NAVARRINI W.

Source: Chimica Oggi – Chemistry Today.

Volume: 27 Pages: 56-59.

Published: Jun. (2009).

ABSTRACT:

Perfluorodiacyl peroxides are suitable tools for thecovalent linkage of fluorinated groups on substrates containing aromatic moieties. The thermal decomposition process of such fluorinated peroxides allows the covalent linkage of fluorinated radicals on the polycyclic aromatic structure of a graphitic carbon black. Depending on the perfluorodiacyl peroxide involved during the chemical treatment, several fluorinated chains, i.e. perfluoroethyl, CF3CF2-, perfluoro-n-propyl, CF3CF2CF2- and perfluoro- iso-propyl, (CF3)2CF-residues have been bonded covalently on the surface of a conductive carbon black. At the characteristic temperature of perfluorocarbons thermolysis (400 C), thermogravimetric analyses revealed weight loss in agreement with the fluorine contents on the modified carbon blacks.