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Dreier, Julia ; Brütting, Christian ; Ruckdäschel, Holger ; Altstädt, Volker ; Bonten, Christian:
Investigation of the Thermal and Hydrolytic Degradation of Polylactide during Autoclave Foaming.
In: Polymers.
Bd. 13
(2021)
Heft 16
.
- 2624.
ISSN 2073-4360
DOI: https://doi.org/10.3390/polym13162624
Abstract
Polylactide (PLA) is one of the most important bioplastics worldwide and thus represents a good potential substitute for bead foams made of the fossil-based Polystyrene (PS). However, foaming of PLA comes with a few challenges. One disadvantage of commercially available PLA is its low melt strength and elongation properties, which play an important role in foaming. As a polyester, PLA is also very sensitive to thermal and hydrolytic degradation. Possibilities to overcome these disadvantages can be found in literature, but improving the properties for foaming of PLA as well as the degradation behavior during foaming have not been investigated yet. In this study, reactive extrusion on a twin-screw extruder is used to modify PLA in order to increase the melt strength and to protect it against thermal degradation and hydrolysis. PLA foams are produced in an already known process from the literature and the influence of the modifiers on the properties is estimated. The results show that it is possible to enhance the foaming properties of PLA and to protect it against hydrolysis at the same time.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Keywords: | Polyactide; Biofoam; Hydrolysis; Degradation |
| Institutionen der Universität: | Fakultäten > Fakultät für Ingenieurwissenschaften > Ehemalige ProfessorInnen > Lehrstuhl Polymere Werkstoffe - Univ.-Prof. Dr.-Ing. Volker Altstädt Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Polymere Werkstoffe > Lehrstuhl Polymere Werkstoffe - Univ.-Prof. Dr.-Ing. Holger Ruckdäschel Fakultäten Fakultäten > Fakultät für Ingenieurwissenschaften Fakultäten > Fakultät für Ingenieurwissenschaften > Ehemalige ProfessorInnen Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Polymere Werkstoffe |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
| Eingestellt am: | 05 Nov 2021 07:43 |
| Letzte Änderung: | 26 Mai 2023 06:22 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/67680 |