(204e) Thermodynamic Model For CO2 - Polymer Systems

We describe the development and use of a compressible lattice model with associated sites to correlate and predict cloud points, sorption behavior and glass transition temperatures of biopolymer and fluropolymer systems using a single set of model parameters for each polymer. Furthermore, we show that these parameters can be obtained from spectroscopic measurements, or molecular dynamic simulations. We also describe FTIR and DSC studies on CO2 - poly lactide-co-glycolide (PLGA) copymers and CO2 - poly perfluoro itaconate systems to obtain model parameters. Finally, we demonstrate that the compressible lattice model with associated sites requires less information to predict phase and sorption behavior, as well as glass transition temperatures than currently available methods.