| 초록 |
Anionic polymerization is a method that can control molecular weight distribution and molecular weight. In this study, the polyisoprene(PI) was synthesized by anionic polymerization and it found that they have stereoregularity which determined by reaction solvent and temperature. In fact, PI having a high ratio of 1,2-/3,4-structure was synthesized using sec-butyllithium and tetrahydrofuran as initiator and solvent. Then, the synthesized PI was functionalized by using 2-aminoethanethiol, benzyl mercaptan, methyl 3-mercaptopropionate, and 1-dodecanethiol with radical initiator under mild conditions. As a result the thermal properties and solubilities were changed dramatically after functionalization. Also it was confirmed that block copolymer can be synthesized at –10 °C for 24 hrs in Ar atmosphere. |
