Organocatalytic sequential ring-opening polymerization of cyclic ester/epoxide and <i>N</i>-sulfonyl aziridine: metal-free and easy access to block copolymers
Huishan Huang, Wenyi Luo, Lin-Lin Zhu, Ying Wang, Zhen Zhang
Abstract
Sequential ring-opening polymerization of ε-caprolactone (ε-CL)/propylene oxide (PO) and N -sulfonyl aziridine switched by tosyl isocyanate (TSI) allows the metal-free synthesis of polysulfonamide-based copolymers.
Topics & Concepts
AziridineCopolymerPropylene oxideSulfonylEpoxidePolymer chemistryPolymerizationIsocyanateChemistryCyclohexene oxideRing (chemistry)MetalMaterials scienceEthylene oxideOrganic chemistryPolymerCatalysisPolyurethaneAlkylCarbon dioxide utilization in catalysisbiodegradable polymer synthesis and propertiesSynthetic Organic Chemistry Methods