Determination of viscosity in ethanol and HFA 134a mixtures R. Johnson D.I. Lewis Paul M. Young Hendrik Versteeg Graham Hargrave 2134/33454 https://repository.lboro.ac.uk/articles/conference_contribution/Determination_of_viscosity_in_ethanol_and_HFA_134a_mixtures/9553580 Knowledge of formulation liquid properties is beneficial when modelling internal transient flows of pMDI HFA 134a and ethanol binary mixtures during atomization1, 2. Non-linear expressions are available that correlate saturated vapor pressure, density and surface tension to HFA 134a-ethanol composition3, 4 2. In this study, experimentally determined dynamic viscosity is presented for ethanol-HFA 134a mixtures at 20.4 ± 1.2°C. 2018-06-18 13:12:12 Binary mixtures Transient aerodynamic atomization model Metered dose inhaler Propellant Mechanical Engineering not elsewhere classified