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

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SYNTHESIS OF CARBON NANOTUBE – BASED MODIFIERS COMPOSITE CONCRETE

Ilinykh I.A. 1 Mazov I.N. 1, 2 Kuznetsov D.V. 1 Yudintseva T.I. 1 Kuskov K.V. 1 Burmistrov I.N. 3
1 National University of Science and Technology “MISIS”
2 Boreskov Institute of Catalysis SB RAS
3 Engels Technological Institute (branch)Saratov State Technical University of Y.A. Gagarin
In this work an analysis of influence of experimental parameters on a process of hydrophilization of multiwall carbon nanotubes by oxidation with nitric acid. Oxygen-containing groups can be produced on the surface of carbon nanotubes in surface concentration in range 1.5-2.8 nm-2. Formation of oxygen-containing groups on the CNT surface was approved by differential thermal analysis and X-ray photoelectron spectroscopy. Sedimentation stability of CNT suspension in aqueous media was investigated showing high results (the suspension is stable for 3 weeks and more). Modified carbon nanotubes can be used as addition to water-based concretes. Introduction of modified carbon nanotubes can be performed by direct mixing with water or by means of preparation of mixtures with surfactants.