| 초록 |
High pressure phase behavior data are reported for poly(dodecyl acrylate) [P(DDA)] in propane, propylene, butane, 1-butene, and dimethyl ether (DME) and for P(DDA) + dodecyl acrylate (DDA) (or DME) in CO2. Cloud-point curves for the P(DDA) in C4 hydrocarbons are at ca. 90 °C higher than the P(DDA) + C3 hydrocarbons curves at fix pressure of ca. 100 bar. The P(DDA) + DME cloud-point curve located between C3 hydrocarbons and C4 hydrocarbons at pressure below ca. 2000 bar. The location of the P(DDA) + CO2 cloud-point curve shifts to lower temperatures and pressures when DDA or DME is added to the P(DDA) + CO2 solution. High pressures phase behavior data is presented for the CO2 + DDA system at temperatures range from 40 to 120 ℃ and pressures up to ca. 260 bar. The CO2 + DDA system exhibits type-I phase behavior with a continuous mixture-critical curve and the system is adequately modeled with the Peng-Robinson equation of state. |
