Step-Wise Concentration Influence of Fullerenes C₆₀and C₇₀on the Various Parameters of Condensed Systems

Effect of fullerene C60 admixture in paraffin wax on the refractive index and phase transition temperatures

“…With a further decrease in temperature, the glassy s of the refractive index corresregions with two exes of the refractive index of the system . The minimum points on the dependenciesn D (w) have its confirmation with the previously obtained data for other systems [13][14][15][16][17][18][19][20].…”

“…The mentioned features of the fullerene C 60 behavior in solutions are explained by the recently predicted theoretically and discovered experimentally phenomenon of the formation of structural anomalies in solutions [17][18][19][20]. The dissolution of fullerene C 60 in aromatic solvents is typicallyfollowed by heat release and entropy decrease, which indicates structural transformations in the liquid phase of the solvent.…”

“…According to the mentioned, the study of the properties of fullerene solutions in hydrocarbons is of considerable interest. The interfacial layer of base liquid molecules around C 60 molecules is absent in these solutions.At the same time, fullerene C 60 solutions exhibit unusual optical, thermodynamic, kinetic, and other properties [4,11,[13][14][15][16][17][18][19][20]: complex temperature dependence of the solubility of fullerenes in some solvents was revealed in [4,11,16], non-linear nature of the change in some thermophysical properties with concentration at low content of fullerene in solutions was revealed in [13][14][15][17][18][19][20].…”

“…Up to now a lot of studies devoted to investigating the effect of fullerene on the thermophysical properties of liquids were published [4,11,[13][14][15][16][17][18][19][20]. However, the principles of thermodynamic modeling of the nanofluids properties, including properties of solutions of PW/C 60 (the molecule C 60 in the solution can be considered both a nanoparticle and a large molecule [4]), remain developed insufficiently [13,15,21,22].…”

“…However, the principles of thermodynamic modeling of the nanofluids properties, including properties of solutions of PW/C 60 (the molecule C 60 in the solution can be considered both a nanoparticle and a large molecule [4]), remain developed insufficiently [13,15,21,22]. In the opinion of some authors [18][19][20][21][22], the current situation is caused by the absence of an approach for the correct evaluation of the nanoparticles' effect on structural changes in the base fluids.It should be emphasized, that mentioned above concerns not only the formation of an interfacial phase around nanoparticles in a nanofluid but also structural changes in the base fluidat the distance from the nanoparticles.…”