Abstract
We have recently proposed a compressible lattice model for C0 2 + polymer systems in which CO 2 forms complexes with one or more functional groups in the polymer. Furthermore, we have shown that this model is able to simultaneously correlate phase equilibria, sorption behavior, and glass transition temperatures in such systems. In the present work, we extend the model to ternary C0 2 + cosolvent polymer systems and demonstrate that cloud point behavior in C0 2 +dimethyl ether + poly (e-caprolactone), C0 2 + dimethyl ether + poly (isopropyl acrylate), and C0 2 + dimethyl ether + poly (isodecyl acrylate) systems can be predicted using parameters obtained from binary data. Our results also suggest that dimethyl ether may form weak complexes with poly (e-caprolactone), poly (isopropyl acrylate), and poly (isodecyl acrylate).
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