The effect of UV-irradiation on composting of polyethylene modified by cellulose |
| |
Authors: | Halina Kaczmarek Dagmara O?dak |
| |
Affiliation: | Nicolaus Copernicus University, Faculty of Chemistry, Gagarin 7, 87-100 Torun, Poland |
| |
Abstract: | LDPE and its blend with cellulose, obtained by extrusion, were UV-irradiated with different doses or biodegraded in soil up to 1 year. Simultaneously, the same samples were 1 year biodegraded after 20 h UV pre-irradiation in the same conditions. The course of photo- and biodegradation was monitored by estimation of average molecular weights and polydispersity, gel amount, changes of PE crystallinity and mechanical properties. Moreover, the biodegradation degree was calculated on the basis of carbon dioxide evolved and surface morphological changes were observed by SEM. It was found that biodegradation of PE + cellulose is hampered by intermolecular crosslinking of both components. Although, the rate of decomposition of PE + cellulose blends is low it is enough for disintegration of such materials in the natural environment. |
| |
Keywords: | PE PE + cellulose compositions Photodegradation Biodegradation |
本文献已被 ScienceDirect 等数据库收录! |
|