| 초록 |
In this study, the poly(methyl methacrylate-co-2,2,3,3,3-pentafluoropropyl methacrylate) [P(MMA-co-PnFPMA)] as a fluoric copolymer was prepared using supercritical dispersion polymerization in supercritical carbon dioxide. Experimental cloud-point up to 435K and 168 MPa are reported for binary and ternary mixtures of P(MMA-co-PnFPMA) in supercritical CH2F2, CHF3 and CHClF2. Phase behavior of binary system for the P(MMA-co-PnFPMA) (25:1, AIBN: 1.0 wt%, 2.0 wt%, and 4 wt%) + supercritical fluoric solvents (CH2F2, CHF3 and CHClF2) mixtures at temperature range from 333 K to 435 K and pressure up to 168 MPa are measured the upper critical solution temperature (UCST) type behavior with negative slope for the P(MMA-co-PnFPMA) + CH2F2, and lower critical solution temperature (LCST) type curve with positive slope for the P(MMA-co-PnFPMA) + CHF3 and P(MMA-co-PnFPMA) + CHClF2 mixtures. |
