Erosion as a possible mechanism for the decrease of size of plastic pieces floating in oceans.
'Petru Poni' Institute of Macromolecular Chemistry, 41A Ghica Voda Alley, 700487 Iași, Romania.
MINES ParisTech, PSL Research University, CEMEF(1) - Centre de Mise en Forme des Matériaux, CNRS UMR 7635, CS 10207 rue Claude Daunesse, 06904 Sophia Antipolis Cedex, France. Electronic address: [email protected]
- Published Article
Marine pollution bulletin
- Publication Date
Feb 01, 2018
A sea water wave tank fitted in an artificial UV light weathering chamber was built to study the behaviour of polypropylene (PP) injected pieces in close ocean-like conditions. In air, the same pieces sees a degradation in the bulk with a decrease of mechanical properties, a little change of crystal properties and nearly no change of surface chemistry. Weathering in the sea water wave tank shows only a surface changes, with no effect on crystals or mechanical properties with loss of small pieces of matter in the sub-micron range and a change of surface chemistry. This suggests an erosion dispersion mechanism. Such mechanism could explain why no particle smaller than about one millimeter is found when collecting plastic debris at sea: there are much smaller, eroded from plastic surfaces by a mechano-chemical process similar to the erosion mechanism found in the dispersion of agglomerate under flow. Copyright © 2017 Elsevier Ltd. All rights reserved.
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This record was last updated on 10/20/2019 and may not reflect the most current and accurate biomedical/scientific data available from NLM.
The corresponding record at NLM can be accessed at https://www.ncbi.nlm.nih.gov/pubmed/29475675