Abstract
In part 1, the infinite dilution activity coefficients of
30 organics in methyl linoleate and methyl palmitate were reported.
This work tested the application of Modified UNIFAC (Dortmund)
as a molecular thermodynamic method in organic – polymer systems
phase equilibrium estimation. Infinite dilution activity coefficients of
30 volatile organic compounds (VOCs) in methyl oleate and ethyl
stearate were predicted using the Modified UNIFAC (Dortmund)
procedure. The infinite dilution activity coefficients obtained in this
study compare very well with literature findings. For example the
calculated infinite dilution activity coefficients for benzene and
toluene agree to about ±5% with those obtained from headspace and
dynamic gas–liquid chromatographic measurements.
biodiesel polymers were found to absorb ethers and aromatics better
compared to other VOC family groups.