Measurement of infinite dilution activity coefficient and application of modified ASOG model for solvent-polymer systems.

Methods for the Measurement of Solvent Activity of Polymer Solutions

“…Different approaches utilizing group contribution methods to predict solvent activities in polymer solutions have been developed after the success of the UNIFACfv model. Recent improvements of polymer-ASOG have been reported by Tochigi et al [305][306][307] Various other group-contribution methods including an equation-of-state were developed by Holten-Anderson et al, 308,309 Chen et al, 310 High and Danner, 311-313 Tochigi et al, 314 Lee and Danner, 315 Bertucco and Mio,316 or Wang et al, 317 respectively. Recent improvements of polymer-ASOG have been reported by Tochigi et al [305][306][307] Various other group-contribution methods including an equation-of-state were developed by Holten-Anderson et al, 308,309 Chen et al, 310 High and Danner, 311-313 Tochigi et al, 314 Lee and Danner, 315 Bertucco and Mio,316 or Wang et al, 317 respectively.…”

Alternative method to predict activity coefficients at infinite dilution of hydrocarbons in aqueous solutions

“…Therefore, it would be advisable to develop predictive models that are able to determine the value of activity coefficients at infinite dilution. Nowadays, there are many theoretical models to determine this parameter 1 as analytical solution of groups (ASOG) 14- 16 and unified functional activity coefficient UNIFAC 17,18 . Over the past decades, models based in quantitative structure-property relationships (QSPRs) have been proposed to estimate activity coefficients, both by multiple linear regression (MLR) and Artificial Neural Networks (ANN) [19][20][21][22][23][24] .…”