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Interference of Biodegradable Plastics in the Polypropylene Recycling Process
Recycling polymers is common due to the need to reduce the environmental impact of these materials. Polypropylene (PP) is one of the polymers called ‘commodities polymers’ and it is commonly used in a wide variety of short-term applications such as food packaging and agricultural products. That is w...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6213196/ https://www.ncbi.nlm.nih.gov/pubmed/30279367 http://dx.doi.org/10.3390/ma11101886 |
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author | Samper, María Dolores Bertomeu, David Arrieta, Marina Patricia Ferri, José Miguel López-Martínez, Juan |
author_facet | Samper, María Dolores Bertomeu, David Arrieta, Marina Patricia Ferri, José Miguel López-Martínez, Juan |
author_sort | Samper, María Dolores |
collection | PubMed |
description | Recycling polymers is common due to the need to reduce the environmental impact of these materials. Polypropylene (PP) is one of the polymers called ‘commodities polymers’ and it is commonly used in a wide variety of short-term applications such as food packaging and agricultural products. That is why a large amount of PP residues that can be recycled are generated every year. However, the current increasing introduction of biodegradable polymers in the food packaging industry can negatively affect the properties of recycled PP if those kinds of plastics are disposed with traditional plastics. For this reason, the influence that generates small amounts of biodegradable polymers such as polylactic acid (PLA), polyhydroxybutyrate (PHB) and thermoplastic starch (TPS) in the recycled PP were analyzed in this work. Thus, recycled PP was blended with biodegradables polymers by melt extrusion followed by injection moulding process to simulate the industrial conditions. Then, the obtained materials were evaluated by studding the changes on the thermal and mechanical performance. The results revealed that the vicat softening temperature is negatively affected by the presence of biodegradable polymers in recycled PP. Meanwhile, the melt flow index was negatively affected for PLA and PHB added blends. The mechanical properties were affected when more than 5 wt.% of biodegradable polymers were present. Moreover, structural changes were detected when biodegradable polymers were added to the recycled PP by means of FTIR, because of the characteristic bands of the carbonyl group (between the band 1700–1800 cm(−1)) appeared due to the presence of PLA, PHB or TPS. Thus, low amounts (lower than 5 wt.%) of biodegradable polymers can be introduced in the recycled PP process without affecting the overall performance of the final material intended for several applications, such as food packaging, agricultural films for farming and crop protection. |
format | Online Article Text |
id | pubmed-6213196 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-62131962018-11-14 Interference of Biodegradable Plastics in the Polypropylene Recycling Process Samper, María Dolores Bertomeu, David Arrieta, Marina Patricia Ferri, José Miguel López-Martínez, Juan Materials (Basel) Article Recycling polymers is common due to the need to reduce the environmental impact of these materials. Polypropylene (PP) is one of the polymers called ‘commodities polymers’ and it is commonly used in a wide variety of short-term applications such as food packaging and agricultural products. That is why a large amount of PP residues that can be recycled are generated every year. However, the current increasing introduction of biodegradable polymers in the food packaging industry can negatively affect the properties of recycled PP if those kinds of plastics are disposed with traditional plastics. For this reason, the influence that generates small amounts of biodegradable polymers such as polylactic acid (PLA), polyhydroxybutyrate (PHB) and thermoplastic starch (TPS) in the recycled PP were analyzed in this work. Thus, recycled PP was blended with biodegradables polymers by melt extrusion followed by injection moulding process to simulate the industrial conditions. Then, the obtained materials were evaluated by studding the changes on the thermal and mechanical performance. The results revealed that the vicat softening temperature is negatively affected by the presence of biodegradable polymers in recycled PP. Meanwhile, the melt flow index was negatively affected for PLA and PHB added blends. The mechanical properties were affected when more than 5 wt.% of biodegradable polymers were present. Moreover, structural changes were detected when biodegradable polymers were added to the recycled PP by means of FTIR, because of the characteristic bands of the carbonyl group (between the band 1700–1800 cm(−1)) appeared due to the presence of PLA, PHB or TPS. Thus, low amounts (lower than 5 wt.%) of biodegradable polymers can be introduced in the recycled PP process without affecting the overall performance of the final material intended for several applications, such as food packaging, agricultural films for farming and crop protection. MDPI 2018-10-02 /pmc/articles/PMC6213196/ /pubmed/30279367 http://dx.doi.org/10.3390/ma11101886 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Samper, María Dolores Bertomeu, David Arrieta, Marina Patricia Ferri, José Miguel López-Martínez, Juan Interference of Biodegradable Plastics in the Polypropylene Recycling Process |
title | Interference of Biodegradable Plastics in the Polypropylene Recycling Process |
title_full | Interference of Biodegradable Plastics in the Polypropylene Recycling Process |
title_fullStr | Interference of Biodegradable Plastics in the Polypropylene Recycling Process |
title_full_unstemmed | Interference of Biodegradable Plastics in the Polypropylene Recycling Process |
title_short | Interference of Biodegradable Plastics in the Polypropylene Recycling Process |
title_sort | interference of biodegradable plastics in the polypropylene recycling process |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6213196/ https://www.ncbi.nlm.nih.gov/pubmed/30279367 http://dx.doi.org/10.3390/ma11101886 |
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