Application of regular solution theory in predicting equilibrium sorption of flavor compounds by packaging polymers
Paik, J.S. | Tigani, M.A.
Equilibrium sorption values of model flavor compounds and polymers used in packaging were determined by immersing polymer samples in liquid flavor compounds. The equilibrium sorption values were normalized for crystauinity and concentration differences. The plot of ln S vs the squared difference between the solubility parameter of polymer and solvents (delta 1--delta 2)2 resulted in poor correlation. This seems to indicate that modifications are required in applying the Hildebrand-Scatchard concept of solution for the prediction of flavor sorption by polymer packaging materials. Results indicate that the consideration of polymer chain configurations and more reliable delta values for polymers may improve the prediction.
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