Solubility Parameter of Fluids from Molecular Thermodynamic Model

The modified square well potential is combined with perturbed-hard-trimer-chain (phtc) eos to predict the solubility parameters of several fluids including alkanes, refrigerants and molten polymers. the performance of the proposed model has been evaluated by predicting the solubility parameters of 12 hydrocarbons, 3 refrigerants and 12 polymers. out of 263 data points for hydrocarbons and refrigerants, the average absolute deviations percent (aad%) of the predicted densities and solubility parameter from the experimental ones were found to be 1.74% and 1.09%, respectively. additionally, out of 1993 data points of 12 polymers, the aads% of the predicted densities were found to be 0.43% and out of 60 data points examined, the aad% of the predicted solubility parameters from the experimental ones were found to be 0.56%, respectively.