Journal Articles Macromolecular Chemistry and Physics Year : 2002

Controlled ring-opening polymerization of lactones and lactide initiated by lanthanum isopropoxide, 2a: Mechanistic studies

Maud Save
A. Soum
  • Function : Author
  • PersonId : 931753
  • IdRef : 069805040

Abstract

The mechanism of ring-opening polymerization of some lactones and lactide initiated by lanthanum isopropoxide has been comprehensively investigated. NMR and viscosity analyses demonstrated that three active polymer chains grow per lanthanum atom and that. depending on the coordinating ability of the monomer, propagation proceeds on aggregated or unaggregated active species. It is also demonstrated that inter- and intramolecular side reactions are limited and that lanthanum-based initiator selectivity in ring-opening polymerization is analogous to that of aluminum ones.

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Polymers

Dates and versions

hal-01563822 , version 1 (18-07-2017)

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Maud Save, A. Soum. Controlled ring-opening polymerization of lactones and lactide initiated by lanthanum isopropoxide, 2a: Mechanistic studies. Macromolecular Chemistry and Physics, 2002, 203 (18), pp.2591-2603. ⟨10.1002/macp.200290043⟩. ⟨hal-01563822⟩

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