The Effect of the Addition of Copper Particles in High-Density Recycled Polyethylene Matrices by Extrusion

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dc.contributor.authorArcos, Camila
dc.contributor.authorMunoz, Lisa
dc.contributor.authorCordova, Deborah
dc.contributor.authorMunoz, Hugo
dc.contributor.authorWalter, Mariana
dc.contributor.authorAzocar, Manuel I.
dc.contributor.authorLeiva, Angel
dc.contributor.authorSancy, Mamie
dc.contributor.authorRodriguez-Grau, Gonzalo
dc.date.accessioned2025-01-20T21:00:48Z
dc.date.available2025-01-20T21:00:48Z
dc.date.issued2022
dc.description.abstractIn this study, the effect of the recycling process and copper particle incorporation on virgin and recycled pellet HDPE were investigated by thermo-chemical analysis, mechanical characterization, and antibacterial analysis. Copper particles were added to pellet HDPE, virgin and recycled, using a tabletop single screw extruder. Some copper particles, called copper nano-particles (Cu-NPs), had a spherical morphology and an average particle size near 20 nm. The others had a cubic morphology and an average particle size close to 300 nm, labeled copper nano-cubes (Cu-NCs). The thermo-chemical analysis revealed that the degree of crystallization was not influenced by the recycling process: 55.38 % for virgin HDPE and 56.01% for recycled HDPE. The degree of crystallization decreased with the addition of the copper particles. Possibly due to a modification in the structure, packaging organization, and crystalline ordering, the recycled HDPE reached a degree of crystallization close to 44.78% with 0.5 wt.% copper nano-particles and close to 36.57% for the recycled HDPE modified with 0.7 wt.% Cu-NCs. Tensile tests revealed a slight reduction in the tensile strength related to the recycling process, being close to 26 MPa for the virgin HDPE and 15.99 MPa for the recycled HDPE, which was improved by adding copper particles, which were near 25.39 MPa for 0.7 wt.% copper nano-cubes. Antibacterial analysis showed a reduction in the viability of E. coli in virgin HDPE samples, which was close to 8% for HDPE containing copper nano-particles and lower than 2% for HDPE having copper nano-cubes. In contrast, the recycled HDPE revealed viability close to 95% for HDPE with copper nano-particles and nearly 50% for HDPE with copper nano-cubes. The viability of S. aureus for HDPE was lower than containing copper nano-particles and copper nano-cubes, which increased dramatically close to 80% for recycled HDPE with copper nano-particles 80% and 75% with copper nano-cubes.
dc.fuente.origenWOS
dc.identifier.doi10.3390/polym14235220
dc.identifier.eissn2073-4360
dc.identifier.urihttps://doi.org/10.3390/polym14235220
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/92747
dc.identifier.wosidWOS:000933653800001
dc.issue.numero23
dc.language.isoen
dc.revistaPolymers
dc.rightsacceso restringido
dc.subjectrecycled polymers
dc.subjecthigh-density polyethylene
dc.subjectFourier-transform infrared spectroscopy
dc.subjectdifferential scanning calorimetry
dc.subjectthermogravimetric
dc.subjecttensile testing
dc.subjectreflectance
dc.subject.ods14 Life Below Water
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.ods12 Responsible Consumption and Production
dc.subject.ods06 Clean Water and Sanitation
dc.subject.odspa14 Vida submarina
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.subject.odspa12 Producción y consumo responsable
dc.subject.odspa06 Agua limpia y saneamiento
dc.titleThe Effect of the Addition of Copper Particles in High-Density Recycled Polyethylene Matrices by Extrusion
dc.typeartículo
dc.volumen14
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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