Kinetics and Modeling of Ring-Opening Copolymerization of l-Lactide and ε-Caprolactone

Feiyin Weng, Xiaohui Li, Yanjiao Wang, Wen Jun Wang, Steven J. Severtson

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


The bulk ring-opening copolymerization of l-lactide with ε-caprolactone was conducted at 140°C. The reaction was catalyzed with stannous octoate and initiated using hydroxyethyl methylacrylate to produce acrylated biomass macromonomers. The effects of varying monomer compositions as well as polymer chain lengths on the copolymerizations were experimentally investigated. A mathematical model is developed considering reversible initiation, propagation, chain transfer, and transesterification reactions. The diffusion control associated with polymer chain length is considered in the model. The model successfully predicts monomers conversions, number-average molecular weights, polydispersity index values, and cumulative copolymer compositions for ring-opening copolymerizations of l-lactide with ε-caprolactone.

Original languageEnglish (US)
Pages (from-to)535-544
Number of pages10
JournalMacromolecular Reaction Engineering
Issue number6
StatePublished - Dec 1 2015

Bibliographical note

Publisher Copyright:
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


  • Modeling
  • Ring-opening copolymerization
  • Stannous octoate
  • l-lactide
  • ε-caprolactone


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