Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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GAS-PHASE AMIDATION OF CARBON NANOTUBES

Dyachkova T.P. 1 Druzhinina V.N. 1
1 Tambov State Technical University
The kinetic regularities of interaction of oxidized carbon nanotubes (CNT) with gaseous ammonia in the temperature range from 160 to 300° C were studied. Raw, oxidized and amidated carbon nanotubes were investigated by FTIR spectroscopy, thermogravimetric analysis and transmission electron microscopy. The change of the nature of the surface functional groups by treating of carboxylated carbon nanotubes with gaseous ammonia was shown. The influence of gas-phase oxidation and amidation on the morphology of CNTs was studied. The conditions of most complete conversion of the carboxylic surface functional groups to amide have been defined. The necessity of strict observance of the temperature regime was shown. Value of an effective activation energy of process was counted. The possible limiting stage of process was offered. The possible embodiments of realization of the gas-phase amidation of carbon nanotubes in the workplace were offered. The developed method differs profitability and simplicity of scaling.