Erosion as a possible mechanism for the decrease of size of plastic pieces floating in oceans

Ana-Maria Resmeriță 1 Adina Coroaba 1 Raluca Darie 1 Florica Doroftei 1 Luliana Spiridon 1 Bogdan C. Simionescu 1 Patrick Navard 2, *
* Auteur correspondant
1 “Petru Poni” Institute of Macromolecular Chemistry
2 CEMEF - Centre de Mise en Forme des Matériaux
Abstract : 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.
Keywords : Polypropylene Degradation Erosion Water Ocean
Type de document :
Article dans une revue
Liste complète des métadonnées
https://hal-mines-paristech.archives-ouvertes.fr/hal-01674359
Contributeur : Magalie Prudon <>
Soumis le : mardi 2 janvier 2018 - 14:47:31
Dernière modification le : jeudi 16 janvier 2020 - 01:15:48

Identifiants

Collections

ENSMP | ENSMP_CEMEF | PARISTECH | CNRS | INSTITUT-TELECOM | PSL

Citation

Ana-Maria Resmeriță, Adina Coroaba, Raluca Darie, Florica Doroftei, Luliana Spiridon, et al.. Erosion as a possible mechanism for the decrease of size of plastic pieces floating in oceans. Marine Pollution Bulletin, Elsevier, 2018, 127, pp.387 - 395. ⟨10.1016/j.marpolbul.2017.12.025⟩. ⟨hal-01674359⟩

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de la notice

275

Contact

Informations

CCSD