| 제목 |
Phase Behavior and Characterization of Poly(methyl methacrylate-co-2,2,3,3,4,4,5,5-octafluoropentyl methacrylate) Prepared by Supercritical Dispersion Polymerization |
| 초록 |
Recently, various industries have been moving away from the use of organic solvents because of environmental regulations on safety hazards. To minimize the consumption of organic solvent, numerous studies have been carried out using supercritical carbon dioxide (scCO2) as reaction medium to synthesized various polymers in a heterogeneous reaction system. In this study, poly(methyl methacrylate-co- 2,2,3,3,4,4,5,5-octafluoropentyl methacrylate) (PMMA-co-OFPMA) as a fluoric copolymer was prepared using supercritical dispersion polymerization in supercritical carbon dioxide (scCO2). The characterization for the prepared (PMMA-co-OFPMA) was investigated using the conversion with reaction times, the particle size and shape, the molecular weight (Mw), and thermal analysis. In addition, Pressure isotherms for phase behavior of binary and ternary systems between (PMMA-co-OFPMA) and association liquid fluid as well as the influence of quality of association solvents, Mw, and cosolvents were measured. |
