Study of oxo-biodegradable polyethylene degradation in simulated soil
| Autor: | Ana Maria Coulon Grisa, Jalma Maria Klein, Barbara Catarina de Antoni Zoppas, Mara Zeni, Rosmary Nichele Brandalise, Lucas Bonan Gomes |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
polyethylene
Materials science Moisture Scanning electron microscope Oxo Biodegradable Mechanical Engineering Polyethylene Biodegradation Condensed Matter Physics pro-oxidant additives Accelerated aging biodegradation chemistry.chemical_compound chemistry Mechanics of Materials TA401-492 Degradation (geology) accelerated aging General Materials Science Composite material Fourier transform infrared spectroscopy microorganisms Materials of engineering and construction. Mechanics of materials Nuclear chemistry |
| Zdroj: | Materials Research v.17 suppl.1 2014 Materials research (São Carlos. Online) Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL Materials Research, Vol 17, Iss suppl 1, Pp 121-126 (2014) Materials Research, Volume: 17 Supplement 1, Pages: 121-126, Published: 11 JUL 2014 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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