Peer-Reviewed Journal Details

Mandatory Fields

Ruth, A. A.,Nickel*, B.,Lesche, H.;

1992

Unknown

ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS

Temperature-Dependence of Viscosity and Density of Glass-Forming Alkanes

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Optional Fields

175

91

10891

The viscosity (eta) and the density of 3-methylpentane (3MP), 2,3-dimethylpentane (2,3DMP), methylcyclohexane (MCH), methylcyclopentane (MCP), and of the 1:1 mixtures MCH/MCP and 3MP/Isopentane were measured from 293 K down to either the freezing point or to the temperature at which eta almost-equal-to 10(6) mPa s. For the glass-forming solvents 3MP, 2,3DMP, MCH/MCP, and 3MP/Isopentane eta(T) can be represented by the sum of two Arrhenius terms and one Vogel-Tammann-Fulcher term: eta(T) almost-equal-to A1 exp(E1/RT) + A2 exp(E2/RT) + A3 exp[E3/R(T-T0)]. For the smaller viscosity ranges of the two crystallizing alkanes MCH and MCP, two Arrhenius terms are sufficient for the description of eta(T).The viscosity (eta) and the density of 3-methylpentane (3MP), 2,3-dimethylpentane (2,3DMP), methylcyclohexane (MCH), methylcyclopentane (MCP), and of the 1:1 mixtures MCH/MCP and 3MP/Isopentane were measured from 293 K down to either the freezing point or to the temperature at which eta almost-equal-to 10(6) mPa s. For the glass-forming solvents 3MP, 2,3DMP, MCH/MCP, and 3MP/Isopentane eta(T) can be represented by the sum of two Arrhenius terms and one Vogel-Tammann-Fulcher term: eta(T) almost-equal-to A1 exp(E1/RT) + A2 exp(E2/RT) + A3 exp[E3/R(T-T0)]. For the smaller viscosity ranges of the two crystallizing alkanes MCH and MCP, two Arrhenius terms are sufficient for the description of eta(T).

0942-93520942-9352

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