Biodegradation of Thermoplastic Polyurethanes from Vegetable Oils
| Autor: | Yijin Xu, Artur Klamczynski, Jelena Milić, Zoran S. Petrović, Gregory M. Glenn |
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| Rok vydání: | 2010 |
| Předmět: |
chemistry.chemical_classification
Environmental Engineering Thermoplastic food.ingredient Materials science Polymers and Plastics Diol Polymer Biodegradation Soybean oil Polyester chemistry.chemical_compound food Vegetable oil chemistry Castor oil Materials Chemistry medicine Organic chemistry medicine.drug |
| Zdroj: | Journal of Polymers and the Environment. 18:94-97 |
| ISSN: | 1572-8900 1566-2543 |
| DOI: | 10.1007/s10924-010-0194-z |
| Popis: | Thermoplastic urethanes based on polyricinoleic acid soft segments and MDI/BD hard segments with varied soft segment concentration were prepared. Soft segment concentration was varied from, 40 to 70 wt%. Biodegradation was studied by respirometry. Segmented polyurethanes with soft segments based on polyricinoleic acid degrade relatively slow losing about 11% carbon after 30 days, but faster than corresponding petrochemical polyesterurethanes. Since biodegradation proceeds mainly through the soft segments, higher soft segment content polymers displayed slightly higher biodegradation. Polyurethanes with dispersed hard domains in the soft phase displayed slightly faster biodegradation than those with co-continuous morphology. Polyester diol degrades slower than castor oil but significantly faster than the polyurethanes with built in soft segments from the same diol. Castor oil biodegrades slower than soybean oil. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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