Biodegradation of low-density polyethylene, polystyrene, polyvinyl chloride, and urea formaldehyde resin buried under soil for over 32 years
| Autor: | Hitoshi Asabe, Murakami Nobunao, Katsumichi Ono, Tomoko Kobayashi, Otake Yoshito |
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| Rok vydání: | 1995 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Urea-formaldehyde General Chemistry Polymer Biodegradation Surfaces Coatings and Films Low-density polyethylene chemistry.chemical_compound Polyvinyl chloride chemistry Soil water Materials Chemistry Degradation (geology) Polystyrene Composite material |
| Zdroj: | Journal of Applied Polymer Science. 56:1789-1796 |
| ISSN: | 1097-4628 0021-8995 |
| DOI: | 10.1002/app.1995.070561309 |
| Popis: | The biodegradation of several polymers that had been buried under soil for over 32 years was examined. No evidence of biodegradation was found for polystyrene, polyvinylchloride, and urea formaldehyde resin. A remarkable degradation was indicated for low density polyethylene thin films which were directly in contact with soil. Severely degraded parts of the film is characterized by whitening. Many small holes were recognized on the surface of the whitened part. The whitened part is specific for the growth of hyphae. FT-IR spectra of the whitened part showed a characteristic band in the vicinity of 1640 cm−1 which was assigned to the stretching vibration of CC bond. Although the part which was not in contact with soil was clear, it also showed evidence of degradation from the presence of carbonyl band in FT-IR. It was suggested that the degradation of the clear part is due to the usual thermo-oxidative process, while the degradation of the whitened part is due to the biotic process. © 1995 John Wiley & Sons, Inc. |
| Databáze: | OpenAIRE |
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