Abstract
In this work, based on mathematical model inspired by transition state
theory, the group contribution (GC) method is used to predict the
viscosity of DESs. The model is constrained by Eyring rate theory and
hard sphere free volume theory. A dataset of 2229 experimental
measurements of the viscosity of 183 DESs from literature is used for
determining the model parameters and subsequent verification of the
model. The rules introduced by this model are simple and easy to
understand. The results show that the proposed model is able to predict
the DESs viscosity with very high accuracy, i.e., with an average
absolute relative deviation of 8.12% over the training set and 8.64%
over the test set, using only temperature and composition as inputs. The
maximum absolute relative deviation is 34.63%. Therefore, the
as-proposed model can be considered a highly reliable tool for
predicting DESs viscosity when experimental data are absent.