Aufsatz
Resistance of poly(lactic acid)/starch composites to weathering effects
Zusammenfassung
In order to produce a completely bio-based and cost-effective filled polymer, PLA and native potato starch as a filler were compounded by twin screw extrusion. Subsequently injection molded test specimens were manufactured and subjected to artificial weathering as well as different storages (high temperature, high humidity, freeze, water) for 504 h with a view to long-term resistance. Depending on the starch content a significant reduction of up to 100% in tensile strength can be seen, as the starch accelerates or inhibits the triggered aging effects. As a result of the influence of humidity and water as well as artificial weathering, stress cracks are formed in starch-containing samples. Storage at an elevated temperature (70°C, 50% RH) leads to polymer degradation of the PLA. This degradation can be inhibited by the addition of starch. Freezing storage has no significant influence on the mechanical and structural properties of the PLA starch composites.
Zitierform
In: Journal of Applied Polymer Science Volume 141 / Issue 2 (2023-10-06) eissn:1097-4628Förderhinweis
Gefördert im Rahmen des Projekts DEALZitieren
@article{doi:10.17170/kobra-202401229395,
author={Goetjes, Victoria and Zarges, Jan-Christoph and Heim, Hans-Peter},
title={Resistance of poly(lactic acid)/starch composites to weathering effects},
journal={Journal of Applied Polymer Science},
year={2023}
}
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2024-01-22T15:44:08Z 2024-01-22T15:44:08Z 2023-10-06 doi:10.17170/kobra-202401229395 http://hdl.handle.net/123456789/15378 Gefördert im Rahmen des Projekts DEAL eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ aging biopolymers durability hydrlysis PLA starch 620 Resistance of poly(lactic acid)/starch composites to weathering effects Aufsatz In order to produce a completely bio-based and cost-effective filled polymer, PLA and native potato starch as a filler were compounded by twin screw extrusion. Subsequently injection molded test specimens were manufactured and subjected to artificial weathering as well as different storages (high temperature, high humidity, freeze, water) for 504 h with a view to long-term resistance. Depending on the starch content a significant reduction of up to 100% in tensile strength can be seen, as the starch accelerates or inhibits the triggered aging effects. As a result of the influence of humidity and water as well as artificial weathering, stress cracks are formed in starch-containing samples. Storage at an elevated temperature (70°C, 50% RH) leads to polymer degradation of the PLA. This degradation can be inhibited by the addition of starch. Freezing storage has no significant influence on the mechanical and structural properties of the PLA starch composites. open access Goetjes, Victoria Zarges, Jan-Christoph Heim, Hans-Peter 12 Seiten doi:10.1002/app.54768 Permeabilität Biopolymere Hydrolyse Stärke publishedVersion eissn:1097-4628 Issue 2 Journal of Applied Polymer Science Volume 141 false e54768
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