Enzyme-catalyzed synthesis of unsaturated aliphatic polyesters based on green monomers from renewable resourcesJiang, 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.
Research output: Contribution to journal › Article › Academic › peer-review
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.
|Number of pages||20|
|Publication status||Published - 12-Aug-2013|