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Enzymatic Synthesis of Chitin- and Chitosan-graft-Aliphatic Polyesters

✍ Scribed by Masayori Fujioka; Hideyuki Okada; Yukihiko Kusaka; Satoko Nishiyama; Hiromichi Noguchi; Shigeru Ishii; Yasuhiko Yoshida

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
130 KB
Volume
25
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

Summary: The title polymers, in which both the stem and the graft are biodegradable, have been synthesized for the first time in a one‐pot, lipase‐catalyzed, graft‐polymerization reaction (in bulk, at 70 °C) of β‐butyrolactone (β‐BL) and ε‐caprolactone (ε‐CL) onto chitin and chitosan. The reactivity order of the lactones was found to be ε‐CL > β‐BL ≫ γ‐BL (no reaction). All the graft polymers prepared are insoluble in common organic solvents.

Synthesis of chitin‐ or chitosan‐graft‐aliphatic polyesters.

imageSynthesis of chitin‐ or chitosan‐graft‐aliphatic polyesters.

📜 SIMILAR VOLUMES

Enzymatic degradation of aliphatic polye
Enzymatic degradation of aliphatic polyesters copolymerized with various diamines
✍ Minoru Nagata 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 266 KB

## Abstract Poly(hexamethylene adipate) copolymers with 10–40 mol‐% (in feed) of aliphatic diamines of various methylene chain lengths were prepared by melt polycondensation. __In vitro__ degradation was performed in buffer solution at 37°C with a lipase and was evaluated by weight loss of the film