| 摘要 |
PURPOSE: A triblock copolymer is provided to remarkably improve mechanical properties, and to improve resin stability while using a biodegradable resin. CONSTITUTION: A manufacturing method of a triblock copolymer comprises: a step of manufacturing a polycarbonate copolymer which comprises a hydroxy group in the terminal by polymerizing an epoxide compound and carbon dioxide; and a step of polymerizing a mixture which is mixed by putting the polycarbonate copolymer containing the hydroxy group in the terminal, and a lactide monomer into an organic solvent under the presence of an organic metal catalyst. The number average molecular weight of the polycarbonate copolymer which comprises the hydroxy group in the terminal is 1,000-100,000. |
