Temperature Dependence of the Viscosity of Isotropic Liquids |
| J. Jad¿yn, G. Czechowski and T. Lech Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznañ, Poland |
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| Received: November 20, 2001; in final form February 8, 2002 |
| Temperature dependence of the shear viscosity measured for isotropic liquids belonging to the three homologous series: 4-(trans-4'-n-alkylcyclohexyl) isothiocyanatobenzenes (Cn H2n+1 CyHx Ph NCS; nCHBT, n=0÷12), n-alkylcyanobiphenyls (CnH2n+1 Ph Ph CN; nCB, n=2÷12) and 1,n-alkanediols (HO(CH2)nOH; 1,nAD, n=2÷10) were analysed with the use of Arrhenius equation and its two modifications: Vogel-Fulcher and proposed in this paper. The extrapolation of the isothermal viscosity of 1,n-alkanediols (n=2÷10) to n=1 leads to an interesting conclusion concerning the expected viscosity of methanediol, HOCH2OH, the compound strongly unstable in a pure state. |
| DOI: 10.12693/APhysPolA.101.495 PACS numbers: 66.20.+d, 83.85.Jn |