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Synthesis of hydrolytically degradable aromatic polyesters with lactide moieties

✍ Scribed by G. Haderlein; C. Schmidt; J. H. Wendorff; A. Greiner

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
322 KB
Volume
8
Category
Article
ISSN
1042-7147

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✦ Synopsis

A synthetic route to higher molecular weight processable polyesters with bisphenol A terephthalate/isophthalate moieties and lactide moieties which are of potential interest for tissue engineering is described. The combination of aliphatic and aromatic moieties is a promising concept for processable polyesters with potential sites for physiological degradation and improved mechanical properties. The molecular structure of the copolyesters prepared by melt condensation via an acid chloride route and incorporation of the lactide moieties by transesterification of an oligo DL- lactide was confirmed by infrared, 1 H and 13 C nuclear magnetic resonance spectroscopy as well as gel permeation chromatography. The thermal and mechanical properties of copolyesters with different amounts of lactide moieties are reported and correlated with their composition. The reaction mechanism by transesterification was proved by a model reaction with a physical blend of the components and the hydrolytical behavior of the copolyesters under physiological conditions has been investigated.

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