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Functionalized poly(ε-caprolactone) and copolymers with ethylene oxide through heterogeneous anionic coordinated polymerization. NMR characterization and crystallinity

✍ Scribed by Véronique Jacquier; Christelle Miola; Marie-France Llauro; Christiane Monnet; Thierry Hamaide

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 668 KB
Volume: 197
Category: Article
ISSN: 1022-1352
DOI: 10.1002/macp.1996.021970411

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✦ Synopsis

Abstract

Functionalized poly(ε‐caprolactone)s have been easily prepared by using a new heterogeneous catalytic system consisting of aluminium alcoholate supported on porous silica and the corresponding alcohol in excess. The polymers have been fully characterized by ^1^H and ^13^C NMR spectroscopy. Oligo(caprolactone‐co‐ethylene oxide)s have been synthesized by the same catalytic system. The diad comonomer distribution as obtained by ^1^H NMR suggests a blocky structure. In addition, low degrees of crystallization have been determined by means of DSC.

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## Abstract Well‐defined biodegradable poly(ε‐caprolactone)‐__b__‐poly(ethylene oxide) (PCL‐__b__‐PEO) copolymers with different arms were synthesized via controlled ring‐opening polymerization of ε‐caprolactone, followed by coupling reaction with carboxyl‐terminated PEO, where these copolymers inc