Synthesis of Block Copolymers of Varying Architecture Through Suppression of Transesterification during Coordinated Anionic Ring Opening Polymerization. (5th July 2012)

• Record Type: Journal Article
• Authors: Lipik, Vitali T.; Abadie, Marc J. M.
• Other Names: Jabbari Esmaiel Academic Editor.
• Is Part Of: International journal of biomaterials. Volume 2012(2012)
• Publication Date: 2012-07-05
• Subjects: Biomedical materials -- Periodicals; Biomedical and Dental Materials; Biomedical materials; Electronic journals; Periodicals; Fulltext; Internet Resources; Periodicals; Periodicals; 610.28
• DOI: 10.1155/2012/390947
• Languages: English
• ISSNs: 1687-8787

Abstract

Abstract : Well-defined di- and triblock copolymers consisting of ε -caprolactone (CL), L-lactide (LA), and trimethylene carbonate (TMC) were synthesized via "PLA first route" in coordinated anionic ring opening polymerization/copolymerization (CAROP) with tin (II) octoate as catalyst. The desired block structure was preserved by use of protective additive α -methylstyrene by preventing the transesterification side-reactions. MALDI-TOF analysis revealed that the protection mechanism is associated with α -methylstyrene and tin (II) octoate complexation. Additionally, it was shown that use of α -methylstyrene in ring opening polymerization allowed the formation of polyesters with high molar mass.