| 초록 |
Lactones are cyclic ester monomers that comprise important biodegradable and biocompatible polyesters. Especially, its robust mechanical properties offer further applications on polyurethane synthesis. Among them, ε-caprolactone and δ-valerolactone, as comparably commercial ones, were explored in this research. These monomers have been synthesized with heterogeneous double metal cyanide catalysts (DMC) in bulk polymerization and ring-opening reaction. And during the polymerization, the kinetics were chronically checked to grasp its reaction kinetics. The resultant polymers were characterized by nuclear magnetic resonance spectroscopy and gel permeation chromatography. |
