10.1016/j.ultsonch.2021.105627
https://zenodo.org/records/6258895
oai:zenodo.org:6258895
Georgia Sourkouni
Georgia Sourkouni
Clausthal Centre for Materials Technology (CZM), Clausthal University of Technology, Leibnizstr. 9, 38678 Clausthal-Zellerfeld, Germany
Charalampia Kalogirou
Charalampia Kalogirou
Clausthal Centre for Materials Technology (CZM), Clausthal University of Technology, Leibnizstr. 9, 38678 Clausthal-Zellerfeld, Germany
Philipp Moritz
Philipp Moritz
Clausthal Centre for Materials Technology (CZM), Clausthal University of Technology, Leibnizstr. 9, 38678 Clausthal-Zellerfeld, Germany
Anna Gödde
Anna Gödde
Clausthal Centre for Materials Technology (CZM), Clausthal University of Technology, Leibnizstr. 9, 38678 Clausthal-Zellerfeld, Germany
Pavlos K. Pandis
Pavlos K. Pandis
School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechneiou St., Zografou Campus, 15780 Athens, Greece
Oliver Höfft
Oliver Höfft
Institute for Electrochemistry, Clausthal University of Technology, 38678 Clausthal-Zellerfeld, Germany
Stamatina Vouyiouka
Stamatina Vouyiouka
School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechneiou St., Zografou Campus, 15780 Athens, Greece
Antonis A. Zorpas
Antonis A. Zorpas
Open University of Cyprus, Faculty of Pure and Applied Sciences, Environmental Conservation and Management, Laboratory of Chemical Engineering and Engineering Sustainability, P.O.Box 12794, 2252 Latsia, Nicosia, Cyprus
Christos Argirusis
Christos Argirusis
Clausthal Centre for Materials Technology (CZM), Clausthal University of Technology, Leibnizstr. 9, 38678 Clausthal-Zellerfeld, Germany
Study on the influence of advanced treatment processes on the surface properties of polylactic acid for a bio-based circular economy for plastics
Zenodo
2021
2021-06-07
https://zenodo.org/communities/eu
Creative Commons Attribution 4.0 International
New biotechnological processes using microorganisms and/or enzymes to convert carbonaceous resources, either biomass or depolymerized plastics into a broad range of different bioproducts are recognized for their high potential for reduced energy consumption and reduced GHG emissions. However, the hydrophobicity, high molecular weight, chemical and structural composition of most of them hinders their biodegradation. A solution to reduce the impact of non-biodegradable polymers spread in the environment would be to make them biodegradable. Different approaches are evaluated for enhancing their biodegradation. The aim of this work is to develop and optimize the ultrasonication (US) and UV photodegradation and their combination as well as dielectric barrier discharge (DBD) plasma as pre‐treatment technologies, which change surface properties and enhance the biodegradation of plastic by surface oxidation and thus helping bacteria to dock on them. Polylactic acid (PLA) has been chosen as a model polymer to investigate its surface degradation by US, UV, and DBD plasma using surface characterization methods like X-ray Photoelectron Spectroscopy (XPS) and Confocal Laser Microscopy (CLSM), Atomic Force Microscopy (AFM) as well as FT-IR and drop contour analysis. Both US and UV affect the surface properties substantially by eliminating the oxygen content of the polymer but in a different way, while plasma oxidizes the surface.
European Commission
10.13039/501100000780
870292
Bio Innovation of a Circular Economy for Plastics