Study of oxo-biodegradable polyethylene degradation in simulated soil
Source abstract
Abstract
This study aims to evaluate the influence of pro-oxidant additive and accelerated aging on the degradation of polyethylene (PE) samples in simulated soil, in accordance with ASTM G160-03. Films of polyethylene with and without pro-oxidant additive were studied, before and after 72 hours of accelerated aging. The films were initially characterized by analyses of Scanning Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR) (to evaluate the Carbonyl Index (CI)). The films were exposed for 30, 60 and 90 days in simulated soil, with controlled moisture and soil pH. The results showed the degradation of polyethylene films through an increase of CI in samples with additive and accelerated aging after 30 days of exposure, and a decrease, after 60 and 90 days, indicating the uptake of material oxidation by-products by microorganisms. The polyethylene films without pro-oxidant additive after accelerated aging showed greater structural and surface modifications, as compared to films with the additive.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Microplastics and Plastic Pollution · biodegradable polymer synthesis and properties · Recycling and Waste Management Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Universidade Federal do Rio Grande do Sul, Brazil
Universidade de Caxias do Sul, Brazil
References (29)
Show source-provided references
1. Analysis of photo-chemical degradation behaviour of polyethylene mulching film with pro-oxidants10.1016/j.polymdegradstab.2011.09.001 ↗
2. Degradation of abiotically aged LDPE films containing pro-oxidant by bacterial consortium10.1016/j.polymdegradstab.2008.07.016 ↗
3. An overview of degradable and biodegradable polyolefin10.1016/j.progpolymsci.2010.12.002 ↗
4. Photooxidation and biodegradation of commercial photodegradable polyethylenes10.1016/0141-3910(94)90053-1 ↗
5. Biodegradation of thermally-oxidized, fragmented low-density polyethylenes10.1016/S0141-3910(03)00105-8 ↗
6. Biodegradation of thermally oxidized polyethylene10.1016/0141-3910(95)00040-S ↗
7. Biodegradation of Polyethylene and the Influence of Surfactants10.1016/0141-3910(88)90030-4 ↗
8. Manzur L · 2009
9. Biological degradation of plastics: a comprehensive review10.1016/j.biotechadv.2007.12.005 ↗
10. Poli(tereftalato de etileno), PET: uma revisão sobre os processos de síntese, mecanismos de degradação e reciclagem10.1590/S0104-14282009000200009 ↗
11. Investigating the role of metal oxidation state on the degradation behaviour of LDPE10.1016/j.polymdegradstab.2009.04.025 ↗
12. Thermal degradation behaviors of polyethylene and polypropylene: Part I: Pyrolysis kinetics and mechanisms10.1016/j.enconman.2009.12.017 ↗
13. Polymer biodegradation: Mechanisms and estimation techniques10.1016/j.chemosphere.2008.06.064 ↗
14. Evaluation of degradation of biodegradable polyethylene (PE)10.1016/S0141-3910(02)00380-4 ↗
15. Dalmolin E · 2006
16. Amaral F · 2009
17. Synergistic effect of chemical and photo treatment on the rate of biodegradation of high density polyethilene by indigenous fungal isolates
18. Soil bacterial strains able to grow on the surface of oxidized polyethylene film containing prooxidant additives10.1016/j.ibiod.2008.11.003 ↗
19. Comparison of the biodegradability of various polyethylene films containing pro-oxidant additives10.1016/j.polymdegradstab.2010.03.009 ↗
20. Molecular weight changes and polymeric matrix changes correlated with the formation of degradation products in biodegraded polyethylene10.1023/A:1021873631162 ↗
21. Degradation of polyethylene by a fungus, Penicillium simplicissi- mum YK10.1016/S0141-3910(01)00027-1 ↗
22. 2003
23. 2004
24. 2003
25. 2000
26. Barnett HI · 1972
27. Lacaz CS
28. Degradation profile of polyehtylene after artificial accelerated weathering10.1016/S0141-3910(02)00338-5 ↗
29. Erosion kinetics of hydrolytically degradable polymers10.1073/pnas.90.2.552 ↗