Aluminum Alkoxides Mediated Ring Opening Polymerization of Lactones and Lactides

Aluminum Alkoxides Mediated Ring Opening Polymerization of Lactones and Lactides 

Although some organometallic compounds can allow for the synthesis of polyesters of a high molecular weight, control of the ROP process usually remains a problem. As an example, in the case of Lewis acid catalyst, molecular weights are difficult to predict and the molecular weight distribution is broad. is 

Whatever previously listed monomer is considered, the living character of the polymerization has been confirmed by kinetic studies, where polymerization is first order in both monomer and initiator. Moreover, the molecular weight can be predicted by the monomer-to-initiator molar ratio, the molecular weight distributions are narrow (PDI=1.05-1.20), and the monomer resumption 

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