Density, Viscosity, Refractive Index, and Surface Tension for Six Binary Systems of Adamantane Derivatives with 1‑Heptanol and Cyclohexylmethanol
CaoXiaofang
QinXiaomei
WuXi
GuoYongsheng
XuLi
FangWenjun
2014
Measurements
on densities (ρ), viscosities (η), and
refractive indices (<i>n</i><sub>D</sub>) from (293.15 to
333.15) K and at 0.1 MPa along with the surface tensions (γ)
at 298.15 K and 0.1 MPa for binary mixtures of 1,3-dimethyladamantane
(1,3-DMA), 1-ethyladamantane (1-EA), and 1,3,5-trimethyladamantane
(1,3,5-TMA) with 1-heptanol or cyclohexylmethanol have been carried
out over the entire composition range. The experimental data are used
to calculate the excess molar volumes (<i>V</i><sub>m</sub><sup>E</sup>), viscosity deviations (Δη), molar refraction
deviations (Δ<sub>Φ</sub><i>R</i>), and surface
tension deviations (Δγ). The <i>V</i><sub>m</sub><sup>E</sup>, Δη, Δ<sub>Φ</sub><i>R</i>, and Δγ values have been fitted to the Redlich–Kister
polynomial equation. From these excess or deviation functions, the
molecular interactions and nonideality of the binary systems are discussed.
The results are expected to provide fundamental data for understanding
the properties of adamantane derivatives as potential components and
the composition optimization of new high energy-density hydrocarbon
fuels.