Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1016/0141-3910(95)00221-9 |
| Title (Primary) | Thermal decomposition of biodegradable polyesters—I: Poly(β-hydroxybutyric acid) |
| Author | Kopinke, F.-D.; Remmler, M.; Mackenzie, K.
|
| Source Titel | Polymer Degradation and Stability |
| Year | 1996 |
| Department | TUCHEM; SAN |
| Volume | 52 |
| Issue | 1 |
| Page From | 25 |
| Page To | 38 |
| Language | englisch |
| Abstract | The thermal decomposition of the biologically degradable polymer poly(β-hydroxybutyric acid) (PHB) was investigated by means of several thermoanalytical techniques: thermogravimetry, differential scanning calorimetry. time resolved pyrolysis-MS and pyrolysis-GC/MS. The results conform with reaction mechanisms proposed in the literature. The dominant reaction pathway is a stereoselective cis-elimination giving rise to the formation of trans-crotonic acid and its oligomers. Crude PHB embedded in the original biomass is significantly less stable (Tmax = 235 °C) than the purified polymer (Tmax = 290 °C). An apparent activation energy of EΛ = 235 kJ · mol−1 was derived from DSC measurements. The data from dynamic thermogravimetric and pyrolysis-MS experiments are not consistent with first order random cleavage kinetics, as would be expected from the reaction mechanism. Thermogravimetry offers a convenient tool for analyzing quantitatively the PHB content of biomasses. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=24298 |
| Kopinke, F.-D., Remmler, M., Mackenzie, K. (1996): Thermal decomposition of biodegradable polyesters—I: Poly(β-hydroxybutyric acid) Polym. Degrad. Stabil. 52 (1), 25 - 38 10.1016/0141-3910(95)00221-9 |
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