Process-induced changes in thermo-mechanical viscoelastic properties and the
corresponding morphology of biodegradable polybutylene adipate terephthalate
(PBAT) and polylactic acid (PLA) blown film blends modified with four
multifunctional chain-extending cross-linkers (CECL) were investigated. The
introduction of CECL modified the properties of the reference PBAT/PLA blend
significantly. The thermal analysis showed that the chemical reactions were
incomplete after compounding, and that film blowing extended them. SEM
investigations of the fracture surfaces of blown extrusion films reveal the significant
effect of CECL on the morphology formed during the processing. The anisotropic
morphology introduced during film blowing proved to affect the degradation
processes as well. Furthermore, the reactions of CECL with PBAT/PLA induced by
the processing depend on the deformation directions. The blow-up ratio parameter
was altered to investigate further process-induced changes proving synergy with
mechanical and morphological features. Using blown film extrusion, the
elongational behavior represents a very important characteristic. However, its
evaluation may be quite often problematic, but with the SER Universal Testing
Platform it was possible to determine changes in the duration of time intervals
corresponding to the rupture of elongated samples.
| ISBN: | 978-80-7678-228-0 |
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| EAN: | 9788076782280 |
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| Počet stran |
68 stran |
| Datum vydání |
14. 03. 2024 |
| Pořadí vydání |
První |
| Jazyk |
anglický |
| Vazba |
e-kniha - pdf |
| Autor: |
Juliana Vanessa Cardoso Azevedo |
| Nakladatelství |
Univerzita Tomáše Bati ve Zlíně |
| Tématická skupina |
999 - nezařazeno |
| Neprodejná publikace. Publikaci je možné poptávat zde: Volně dostupné http://hdl.handle.net/10563/54630 |
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