| Solubility parameters of twenty-seven solutes in Poly (epsilon-caprolactone) (PCL) were reported at five different temperatures between 70°C to 110°C using inverse gas chromatography (IGC). The three-dimensional solubility parameter model was applied to analyze these data. A linear regression method was compared with a direct minimization of the sum of the error square method. Deviations were observed between the prediction of chiRT/V and the simple three-dimensional solubility parameter model. By adjusting the weight on the polar and hydrogen bonding components, the systematic deviations could be diminished. The confidence interval (CI) of parameters was calculated from a linearized equation based on the sum of error square. A different method to estimate three-dimensional solubility parameters by averaging values of the five solutes with the smallest interaction parameter was discussed in this study. |
