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Copper-Polyurethane Composite Materials: Particle Size Effect on the Physical-Chemical and Antibacterial Properties
In this work, thermoplastic polyurethane (TPU) composites incorporated with 1.0 wt% Cu particles were synthesized by the melt blending method. The effect of the incorporated copper particle size on the antibacterial, thermal, rheological, and mechanical properties of TPU was investigated. The obtain...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7563828/ https://www.ncbi.nlm.nih.gov/pubmed/32867134 http://dx.doi.org/10.3390/polym12091934 |
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author | Miranda, Cristian Castaño, Johanna Valdebenito-Rolack, Emky Sanhueza, Felipe Toro, Rody Bello-Toledo, Helia Uarac, Patricio Saez, Luciano |
author_facet | Miranda, Cristian Castaño, Johanna Valdebenito-Rolack, Emky Sanhueza, Felipe Toro, Rody Bello-Toledo, Helia Uarac, Patricio Saez, Luciano |
author_sort | Miranda, Cristian |
collection | PubMed |
description | In this work, thermoplastic polyurethane (TPU) composites incorporated with 1.0 wt% Cu particles were synthesized by the melt blending method. The effect of the incorporated copper particle size on the antibacterial, thermal, rheological, and mechanical properties of TPU was investigated. The obtained results showed that (i) the addition of copper particles increased the thermal and mechanical properties because they acted as co-stabilizers of polyurethane (PU) (ii) copper nanoparticles decreased the viscosity of composite melts, and (iii) microparticles > 0.5 µm had a tendency to easily increase the maximum torque and formation of agglomerates. SEM micrographics showed that a good mixture between TPU and copper particles was obtained by the extrusion process. Additionally, copper-TPU composite materials effectively inhibited the growth of the Gram-negative Escherichia coli and the Gram-positive Staphylococcus aureus. Considering that the natural concentration of copper in the blood is in the range of 0.7–0.12 mg/L and that the total migration value of copper particles from TPU was 1000 times lower, the results suggested that TPU nanocomposites could be adequately employed for biomedical applications without a risk of contamination. |
format | Online Article Text |
id | pubmed-7563828 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-75638282020-10-27 Copper-Polyurethane Composite Materials: Particle Size Effect on the Physical-Chemical and Antibacterial Properties Miranda, Cristian Castaño, Johanna Valdebenito-Rolack, Emky Sanhueza, Felipe Toro, Rody Bello-Toledo, Helia Uarac, Patricio Saez, Luciano Polymers (Basel) Article In this work, thermoplastic polyurethane (TPU) composites incorporated with 1.0 wt% Cu particles were synthesized by the melt blending method. The effect of the incorporated copper particle size on the antibacterial, thermal, rheological, and mechanical properties of TPU was investigated. The obtained results showed that (i) the addition of copper particles increased the thermal and mechanical properties because they acted as co-stabilizers of polyurethane (PU) (ii) copper nanoparticles decreased the viscosity of composite melts, and (iii) microparticles > 0.5 µm had a tendency to easily increase the maximum torque and formation of agglomerates. SEM micrographics showed that a good mixture between TPU and copper particles was obtained by the extrusion process. Additionally, copper-TPU composite materials effectively inhibited the growth of the Gram-negative Escherichia coli and the Gram-positive Staphylococcus aureus. Considering that the natural concentration of copper in the blood is in the range of 0.7–0.12 mg/L and that the total migration value of copper particles from TPU was 1000 times lower, the results suggested that TPU nanocomposites could be adequately employed for biomedical applications without a risk of contamination. MDPI 2020-08-27 /pmc/articles/PMC7563828/ /pubmed/32867134 http://dx.doi.org/10.3390/polym12091934 Text en © 2020 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 Miranda, Cristian Castaño, Johanna Valdebenito-Rolack, Emky Sanhueza, Felipe Toro, Rody Bello-Toledo, Helia Uarac, Patricio Saez, Luciano Copper-Polyurethane Composite Materials: Particle Size Effect on the Physical-Chemical and Antibacterial Properties |
title | Copper-Polyurethane Composite Materials: Particle Size Effect on the Physical-Chemical and Antibacterial Properties |
title_full | Copper-Polyurethane Composite Materials: Particle Size Effect on the Physical-Chemical and Antibacterial Properties |
title_fullStr | Copper-Polyurethane Composite Materials: Particle Size Effect on the Physical-Chemical and Antibacterial Properties |
title_full_unstemmed | Copper-Polyurethane Composite Materials: Particle Size Effect on the Physical-Chemical and Antibacterial Properties |
title_short | Copper-Polyurethane Composite Materials: Particle Size Effect on the Physical-Chemical and Antibacterial Properties |
title_sort | copper-polyurethane composite materials: particle size effect on the physical-chemical and antibacterial properties |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7563828/ https://www.ncbi.nlm.nih.gov/pubmed/32867134 http://dx.doi.org/10.3390/polym12091934 |
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