Polyesterification of alpha-Angelicalactone

Abstract

alpha-Angelicalactone can be polymerized by two ways: as the substituted ethylene and as lactone. Polyesters of alpha-angelicalactone are obtained on alkali based catalysts. The obtained polymers are light yellow resins or solid, water-insoluble and soluble in polar organic solvents. Molecular weight of the obtained polymers is up to 2000 amu. The structure of the polymers is studied by 1Н NMR spectroscopy. It is shown, that the part of polyester intermonomeric bond is more than 68 %. The obtained polymers are exposed to full biodegradation by microorganisms Sacharomices cerevisae during 5 - 15 day, and by Streptomyсes lividans and Streptomyсes chrysomallus - during 20 - 30 day.