Biomolecules 2013, 3(3), 461-480; doi:10.3390/biom3030461
Article

Enzyme-Catalyzed Synthesis of Unsaturated Aliphatic Polyesters Based on Green Monomers from Renewable Resources

Received: 15 July 2013; in revised form: 31 July 2013 / Accepted: 1 August 2013 / Published: 12 August 2013
(This article belongs to the Special Issue Enzymes and Their Biotechnological Applications)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: 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.
Keywords: enzymatic polymerizations; CALB; unsaturated aliphatic polyesters; bio-based monomers; succinate; itaconate; 1,4-butanediol; renewable resources
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MDPI and ACS Style

Jiang, Y.; Woortman, A.J.; van Ekenstein, G.O.A.; Loos, K. Enzyme-Catalyzed Synthesis of Unsaturated Aliphatic Polyesters Based on Green Monomers from Renewable Resources. Biomolecules 2013, 3, 461-480.

AMA Style

Jiang Y, Woortman AJ, van Ekenstein GOA, Loos K. Enzyme-Catalyzed Synthesis of Unsaturated Aliphatic Polyesters Based on Green Monomers from Renewable Resources. Biomolecules. 2013; 3(3):461-480.

Chicago/Turabian Style

Jiang, Yi; Woortman, Albert J.; van Ekenstein, Gert O.A.; Loos, Katja. 2013. "Enzyme-Catalyzed Synthesis of Unsaturated Aliphatic Polyesters Based on Green Monomers from Renewable Resources." Biomolecules 3, no. 3: 461-480.

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