Functional polyesters via ring-opening copolymerization of α –hydroxy–γ –butyrolactone and ϵ -caprolactone: La[N(SiMe3)2]3 as an efficient coordination-insertion catalyst

The growing awareness of environmental concerns and the fossil resources depletion have raised the need to develop sustainable and degradable polymers such as aliphatic polyesters. $gamma$-Lactone-based polyesters are of great interest today due to their ability to depolymerize. The introduction of functional groups appeared also useful to tune the properties of such polyesters. This can…