| 초록 |
To synthesize speciality oligomers required for the fabrication in the field of nano material, one of the controlled free radical polymerization, RAFT polymerization was used. As reaction media, Supercritical carbondioxide, which is both environment friendly property and tunable solvent-power were used. In order to do this research, Reaction experiment equipments were designed and constructed for supercritical polymerization. Additionally, the RAFT agents, O-Phenyl-S-[1-(Phenylethyl)] Dithiocarbonate and Cumyl Dithiobenzoate were synthesized for RAFT polymerization. Hydrophobic MMA(methyl methacrylate) as monomers and AIBN as initiators were used, and then the variation of PDI(polydispersity) was verified, depending on the mole-ratio of reactans(momomer, initiator, RAFT agent) and reaction time. |
