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Degradation of Polyester Polyurethane by Bacterial Polyester Hydrolases
Open accessAbstract
Polyurethanes (PU) are widely used synthetic polymers. The growing amount of PU used industrially has resulted in a worldwide increase of plastic wastes. The related environmental pollution as well as the limited availability of the raw materials based on petrochemicals requires novel solutions for their efficient degradation and recycling. The degradation of the polyester PU Impranil DLN by the polyester hydrolases LC cutinase (LCC), TfCut2, Tcur1278 and Tcur0390 was analyzed using a turbidimetric assay. The highest hydrolysis rates were obtained with TfCut2 and Tcur0390. TfCut2 also showed a significantly higher substrate affinity for Impranil DLN than the other three enzymes, indicated by a higher adsorption constant K. Significant weight losses of the solid thermoplastic polyester PU (TPU) Elastollan B85A-10 and C85A-10 were detected as a result of the enzymatic degradation by all four polyester hydrolases. Within a reaction time of 200 h at 70 °C, LCC caused weight losses of up to 4.9% and 4.1% of Elastollan B85A-10 and C85A-10, respectively. Gel permeation chromatography confirmed a preferential degradation of the larger polymer chains. Scanning electron microscopy revealed cracks at the surface of the TPU cubes as a result of enzymatic surface erosion. Analysis by Fourier transform infrared spectroscopy indicated that the observed weight losses were a result of the cleavage of ester bonds of the polyester TPU.
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Microbial degradation of polyurethane, polyester polyurethanes and polyether polyurethanes
Nakajima-Kambe, T., Shigeno-Akutsu, Y., Nomura, N., Onuma, F., & Nakahara, T. (1999) · Applied Microbiology and Biotechnology · doi:10.1007/s002530051373 · Cited by 284
Mukai, K., Yamada, K., & Doi, Y. (1993) · International Journal of Biological Macromolecules · doi:10.1016/0141-8130(93)90054-p · Cited by 143
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Microbial Degradation and Valorization of Plastic Wastes
Ru, J., Huo, Y., & Yang, Y. (2020) · Frontiers in Microbiology · doi:10.3389/fmicb.2020.00442 · Cited by 609
Plastics degradation by hydrolytic enzymes: The plastics‐active enzymes database—PAZy
Buchholz, P. C. F., Feuerriegel, G., Zhang, H., Perez‐Garcia, P., Nover, L., Chow, J., Streit, W. R., & Pleiss, J. (2022) · Proteins: Structure, Function, and Bioinformatics · doi:10.1002/prot.26325 · Cited by 259
Microbial Degradation of Marine Plastics: Current State and Future Prospects
Vaksmaa, A., Hernando-Morales, V., Zeghal, E., & Niemann, H. (2021) · Biotechnology for Sustainable Environment · doi:10.1007/978-981-16-1955-7_5 · Cited by 50
Insights into the Catalytic Activity of a Metagenome-Derived Urethanase
Świderek, K., Arafet, K., de Sousa Batista, V., Grajales-Hernández, D., López-Gallego, F., & Moliner, V. (2025) · Journal of the American Chemical Society · doi:10.1021/jacs.5c13147 · Cited by 4
Metadata
- Authors
- Schmidt, J., Wei, R., Oeser, T., Dedavid e Silva, L., Breite, D., Schulze, A., & Zimmermann, W.
- Venue
- Polymers
- Publisher
- MDPI AG
- Published
- 2017-02-16
- Volume
- 9
- Issue
- 2
- Pages
- 65
- ISSN
- 2073-4360 (ISSN-L)
- OpenAlex
- W2588051874
- Cited by
- 203
- References
- 2
- FWCI
- 2.87
- Type
- journal article
- Language
- en
- Open access
- gold
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- Schmidt, J., Wei, R., Oeser, T., Dedavid e Silva, L., Breite, D., Schulze, A., & Zimmermann, W. (2017). Degradation of Polyester Polyurethane by Bacterial Polyester Hydrolases. Polymers. https://doi.org/10.3390/polym9020065
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