Study of the Influence of the Reprocessing Cycles on the Final Properties of Polylactide Pieces Obtained by Injection Molding
© 2019 by the authors.
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Multidisciplinary Digital Publishing Institute
2019
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| Online Access: | http://hdl.handle.net/10261/197173 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100011033 |
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dig-iata-es-10261-1971732021-12-28T15:36:21Z Study of the Influence of the Reprocessing Cycles on the Final Properties of Polylactide Pieces Obtained by Injection Molding Agüero, Ángel Morcillo, Maria del Carmen Quiles-Carrillo, Luis Balart, Rafael Boronat, Teodomiro Lascano, Diego Torres Giner, Sergio Fenollar, Octavio Ministerio de Economía y Competitividad (España) Ministerio de Ciencia, Innovación y Universidades (España) Agencia Estatal de Investigación (España) © 2019 by the authors. This research work aims to study the influence of the reprocessing cycles on the mechanical, thermal, and thermomechanical properties of polylactide (PLA). To this end, PLA was subjected to as many as six extrusion cycles and the resultant pellets were shaped into pieces by injection molding. Mechanical characterization revealed that the PLA pieces presented relatively similar properties up to the third reprocessing cycle, whereas further cycles induced an intense reduction in ductility and toughness. The effect of the reprocessing cycles was also studied by the changes in the melt fluidity, which showed a significant increase after four reprocessing cycles. An increase in the bio-polyester chain mobility was also attained with the number of the reprocessing cycles that subsequently favored an increase in crystallinity of PLA. A visual inspection indicated that PLA developed certain yellowing and the pieces also became less transparent with the increasing number of reprocessing cycles. Therefore, the obtained results showed that PLA suffers a slight degradation after one or two reprocessing cycles whereas performance impairment becomes more evident above the fourth reprocessing cycle. This finding suggests that the mechanical recycling of PLA for up to three cycles of extrusion and subsequent injection molding is technically feasible. This research was funded by by the Spanish Ministry of Science, Innovation, and Universities (MICIU) project numbers MAT2017-84909-C2-2-R and AGL2015-63855-C2-1-R. Peer reviewed 2019-12-20T14:12:03Z 2019-12-20T14:12:03Z 2019 2019-12-20T14:12:03Z artículo http://purl.org/coar/resource_type/c_6501 Polymers 11(12): 1908 (2019) http://hdl.handle.net/10261/197173 10.3390/polym11121908 2073-4360 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100011033 31756897 en #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/MAT2017-84909-C2-2-R MAT2017-84909-C2-2-R/AEI/10.13039/501100011033 info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AGL2015-63855-C2-1-R Publisher’s version https://doi.org/10.3390/polym11121908 Sí open Multidisciplinary Digital Publishing Institute |
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© 2019 by the authors. |
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Ministerio de Economía y Competitividad (España) |
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Ministerio de Economía y Competitividad (España) Agüero, Ángel Morcillo, Maria del Carmen Quiles-Carrillo, Luis Balart, Rafael Boronat, Teodomiro Lascano, Diego Torres Giner, Sergio Fenollar, Octavio |
| format |
artículo |
| author |
Agüero, Ángel Morcillo, Maria del Carmen Quiles-Carrillo, Luis Balart, Rafael Boronat, Teodomiro Lascano, Diego Torres Giner, Sergio Fenollar, Octavio |
| spellingShingle |
Agüero, Ángel Morcillo, Maria del Carmen Quiles-Carrillo, Luis Balart, Rafael Boronat, Teodomiro Lascano, Diego Torres Giner, Sergio Fenollar, Octavio Study of the Influence of the Reprocessing Cycles on the Final Properties of Polylactide Pieces Obtained by Injection Molding |
| author_sort |
Agüero, Ángel |
| title |
Study of the Influence of the Reprocessing Cycles on the Final Properties of Polylactide Pieces Obtained by Injection Molding |
| title_short |
Study of the Influence of the Reprocessing Cycles on the Final Properties of Polylactide Pieces Obtained by Injection Molding |
| title_full |
Study of the Influence of the Reprocessing Cycles on the Final Properties of Polylactide Pieces Obtained by Injection Molding |
| title_fullStr |
Study of the Influence of the Reprocessing Cycles on the Final Properties of Polylactide Pieces Obtained by Injection Molding |
| title_full_unstemmed |
Study of the Influence of the Reprocessing Cycles on the Final Properties of Polylactide Pieces Obtained by Injection Molding |
| title_sort |
study of the influence of the reprocessing cycles on the final properties of polylactide pieces obtained by injection molding |
| publisher |
Multidisciplinary Digital Publishing Institute |
| publishDate |
2019 |
| url |
http://hdl.handle.net/10261/197173 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100011033 |
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