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• W2890939262 startingPage "135" @default.
• W2890939262 abstract "Poly(lactic acid) (PLA) is a biobased polymer that represents one of the most interesting alternatives to fossil-fuel based polymers in food packaging applications. Most of the PLA used in food packaging is used only once and then discarded, even though the PLA types used in packaging have good properties and stability. Therefore, it seems reasonable to consider the possibility of recycling the used polymer through a mechanical recycling process. The main aims of this work are to study the effect of the mechanical recycling on the properties of PLA and the usefulness of different upgrading methods to obtain recycled PLA with improved properties. A commercial type of PLA was subjected to accelerated thermal, photochemical and hydrolytic aging and then reprocessed. During reprocessing, aged PLA was blended with virgin PLA and a commercial chain extender was added. Results point out that recycling causes the degradation of PLA, and negatively affects the thermal stability and mechanical properties. However, addition of virgin PLA, and the chain extender, led to an increase of up to 9% in the intrinsic viscosity and 8% in the Vickers hardness of the recycled material. These results suggest that mechanically recycled PLA with improved performance can be obtained, a fact which might improve the recyclability of PLA and thus the environmental impact of this material." @default.
• W2890939262 created "2018-09-27" @default.
• W2890939262 creator A5004518727 @default.
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• W2890939262 date "2018-09-11" @default.
• W2890939262 modified "2023-10-05" @default.
• W2890939262 title "Valorization of poly(lactic acid) wastes via mechanical recycling: Improvement of the properties of the recycled polymer" @default.
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• W2890939262 doi "https://doi.org/10.1177/0734242x18798448" @default.
• W2890939262 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30204060" @default.
• W2890939262 hasPublicationYear "2018" @default.
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