Modeling of the separation of polydisperse polymer systems by compressed gases

Multicomponent flash algorithm for mixtures containing polydisperse polymers

“…Heidemann 1999 applied this approach to develop an algorithm for determining the cloud-and shadow-point curves of polydisperse polymer solutions. Another approach is to treat the distribution with a set of discrete pseudocomponents ŽChen et al, 1993;Sadowski and Arlt, 1995;Folie, 1996;Behme et al, 1999;Cheluget et al, 2002;Jog and Chapman, . 2002 .…”

“…This algorithm has been successfully used in academia and in Ž industry for a number of years Behme et al, 1999;Tork et al, 1999;Wiesmet et al, 2000;Hungenberg et al, 2001;…”

Solubility of Supercritical CO<sub>2</sub> in Polystyrene during Foam Formation via Statistical Associated Fluid Theory (SAFT) Equation of State

“…The carbon dioxide/polystyrene system was investigated to see how accurate the SAFT EOS was in predicting the solvent. Model parameters were taken from Radosz [11] and Behme [20], and experimental data were taken from Sato [1]. Figure 6 shows the solubility of CO 2 in polystyrene at a temperature of 183 o C, and shows good agreement between the model and experimental data.…”

“…The system used with the SAFT EOS is the carbon dioxide/methanol system, which includes the association component of the residual Helmholtz energy in Equation 7 and its partial differentials. The experimental data was taken from Suzuki [19] and the SAFT parameters were taken from Huang and Radosz [11,12] and Behme [20]. Figure 4 shows the P-xy diagram for this system and compares the SAFT EOS to the SRK EOS.…”

Thermodynamics and Thermokinetics to Model Phase Transitions of Polymers over Extended Temperature and Pressure Ranges Under Various Hydrostatic Fluids

“…The currently used models are the 'dual-mode' model (Vieth et al, 1976), the cubic equation of state (EOS) as Peng-Robinson (Zhong & Masuoka, 1998) or Soave-Redlich-Kwong (Orbey et al, 1998) EOSs, the lattice-fluid model of Sanchez-Lacombe equation of state (SL-EOS) with the extended equation of Doghieri-Sarti (Doghieri & Sarti, 1996;Sarti & Doghieri, 1998), and the Statistical Associating Fluid Theory (SAFT) (Prigogine et al, 1957;Beret & Prausnitz, 1975;Behme et al, 1999). From the state of the art, the thermodynamic SL-EOS was preferably selected to theoretically estimate the change in volume of the polymer versus pressures and temperatures found in eq.…”