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Enzyme-catalyzed synthesis of unsaturated aliphatic polyesters based on green monomers from renewable resources

Jiang, Y., Woortman, A. J. J., van Ekenstein, G. O. R. A. & Loos, K., 12-Aug-2013, In : Biomolecules. 3, 3, p. 461-80 20 p.

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Bio-based commercially available succinate, itaconate and 1,4-butanediol are enzymatically co-polymerized in solution via a two-stage method, using Candida antarctica Lipase B (CALB, in immobilized form as Novozyme® 435) as the biocatalyst. The chemical structures of the obtained products, poly(butylene succinate) (PBS) and poly(butylene succinate-co-itaconate) (PBSI), are confirmed by 1H- and 13C-NMR. The effects of the reaction conditions on the CALB-catalyzed synthesis of PBSI are fully investigated, and the optimal polymerization conditions are obtained. With the established method, PBSI with tunable compositions and satisfying reaction yields is produced. The 1H-NMR results confirm that carbon-carbon double bonds are well preserved in PBSI. The differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA) results indicate that the amount of itaconate in the co-polyesters has no obvious effects on the glass-transition temperature and the thermal stability of PBS and PBSI, but has significant effects on the melting temperature.

Original languageEnglish
Pages (from-to)461-80
Number of pages20
JournalBiomolecules
Volume3
Issue number3
Publication statusPublished - 12-Aug-2013

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