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

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...

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Bibliographic Details
Published in:	Macromolecular rapid communications. Vol. 25; no. 20; pp. 1776 - 1780
Main Authors:	Fujioka, Masayori, Okada, Hideyuki, Kusaka, Yukihiko, Nishiyama, Satoko, Noguchi, Hiromichi, Ishii, Shigeru, Yoshida, Yasuhiko
Format:	Journal Article
Language:	English
Published:	Weinheim WILEY-VCH Verlag 22-10-2004 WILEY‐VCH Verlag Wiley
Subjects:	Applied sciences biodegradable chitin enzymes Exact sciences and technology graft copolymers lactone Natural polymers Physicochemistry of polymers Starch and polysaccharides Lactone copolymer Insoluble compound Graft copolymer Enzyme Triacylglycerol lipase Butyrate(hydroxy) copolymer Enzymatic catalysis Esterases Chitin Experimental study Grafting Carboxylic ester hydrolases Caprolactone copolymer Preparation Hydrolases Oside polymer Chitosan
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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.
Bibliography:	ark:/67375/WNG-T2TCFW3F-X istex:96F42CE86E73E3DBD1A6352661700AA09DFDDC2C ArticleID:MARC200400288
ISSN:	1022-1336 1521-3927
DOI:	10.1002/marc.200400288