Titelangaben
Sommer, Caroline ; Nguyen, Johnny ; Menzel, Teresa ; Ruckdäschel, Holger ; Koch, Martin:
Determining weathering-induced heterogeneous oxidation profiles of polyethylene, polypropylene and polystyrene using laser-induced breakdown spectroscopy.
In: Chemosphere.
Bd. 343
(2023)
.
- 140105.
ISSN 1879-1298
DOI: https://doi.org/10.1016/j.chemosphere.2023.140105
Angaben zu Projekten
Projekttitel: |
Offizieller Projekttitel Projekt-ID SFB 1357: MIKROPLASTIK – Gesetzmäßigkeiten der Bildung, des Transports, des physikalisch-chemischen Verhaltens sowie der biologischen Effekte: Von Modell- zu komplexen Systemen als Grundlage neuer Lösungsansätze 391977956 |
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Projektfinanzierung: |
Deutsche Forschungsgemeinschaft |
Abstract
Weathering-induced polymer degradation is typically heterogeneous which plays an integral part in fragmentation. Despite that, the current selection of techniques to investigate such heterogeneities, especially beneath the sample surface, is sparse. We introduce Laser-induced Breakdown Spectroscopy (LIBS) as an analytical tool and evaluate its performance for depth profiling. Three types of polymers were selected (polyethylene, polypropylene, and polystyrene) that were aged under controlled conditions. We demonstrate that LIBS can detect heterogeneous oxidation on the surface and inside the samples. The results reveal that different oxidation behaviors are linked to the sample's lattice structure and the subsequent formation of microcracks. This implies that LIBS is beneficial to give additional insights into the weathering and degradation behavior of environmentally relevant plastics.