N.E. Kazantseva (Czech Republic, Russia), J. Vilčkov, P. Sha (Czech Republic), B.A. Zaitsev, I. Yu. Sapurina, L.G. Kleptsova, G.I. Khramova (Russia), J. Stejskal (Czech Republic), M.M. Tomishko, and O.V. Demicheva (Russia)
Carbon nanotubes, composites; polyaniline, tribological properties, conductivity, and magnetic properties.
Multi-wall carbon nanotubes (CNT) containing different concentration of nickel nanoparticles (10–40 wt.%) have been coated with a conducting polymer, polyaniline (PANI), during aniline oxidation. First, series of PANI– CNT composites, where PANI concentrations varies from 20 to 80 wt.%, were prepared and classified by electrical and magnetic properties. Then, the surface-modified CNT with 20 wt.% of PANI, i.e. in the case when polymer is only deposited on CNT and doesn’t present in a free form, were used for mechanical reinforcement of high temperature and chemically stable thermoset of a new type (brand name “Rolivsan MV-1”). The results show that: (1) CNT coated by PANI form uniform dispersion in a low viscous polyfunctional styreneless and solvent-free unsaturated resin; (2) the presence of a small amount of PANI–CNT in the cured Rolivsan resin improved the tribological properties of the filled polymer material as well as increased its conductivity by ten orders of magnitude compared with rubber. The enhanced tribological properties have been attributed to the microstructure of the CNT–PANI–Rolivsan composites. Uniformly dispersed CNTs coated by PANI play role of admixtures participated in the Rolivsan post-crosslinking reactions and thus increased micro-hardness of composite.
Important Links:
Go Back
