A highly random terpolymer of CO2, styrene oxide (SO), and propylene oxide (PO) was realized by using a tetraphenylporphyrinatocobalt(III) chloride ((TPP)CoCl)/4-dimethylamino pyridine (DMAP) catalyst system. In contrast, gradient terpolymers were formed in the cases of CO2, cyclohexylethylene oxide (CyEO), tert-butylethylene oxide (tBuEO) or 1-adamantylethylene oxide (AdEO), and PO. The glass transition temperatures (Tgs) of these terpolymers are tunable between that of the copolymer of CO2 with PO (34 °C) and that of the copolymers of CO2 with the corresponding epoxide with bulky side groups.
- Masayoshi Honda
- Takuya Ebihara
- Hiroshi Sugimoto
