Novel Biodegradable Copolyesters Containing Blocks of Poly(3-hydroxyoctanoate) and Poly(ε-caprolactone): Synthesis and Characterization

✍ Scribed by Laurianne Timbart; Estelle Renard; Valérie Langlois; Philippe Guerin

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 118 KB
• Volume: 4
• Category: Article
• ISSN: 1616-5187
• DOI: 10.1002/mabi.200400104

✦ Synopsis

Abstract

Summary: Novel biodegradable polyester block copolymers have been synthesized by using well‐defined poly(3‐hydroxyoctanoate) (PHO) oligomers having a hydroxyl end group and an ester end group with $\overline M _{\rm n}$ values of 800, 2 500, 5 300, 8 000, or 20 000 as an elastomeric soft segment and poly(ε‐caprolactone) as a more crystalline segment. These PHO oligomers prepared by methanolysis were subjected to block copolymerization with ε‐caprolactone. The chemical structure of the copolymers was confirmed by ^1^H NMR and ^13^C NMR spectroscopy. All the copolyesters are semi‐crystalline and two T~g~ were observed by differential scanning calorimetry when the molecular weight of the PHO block is about 20 000.
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