| dc.contributor.author | Salazar, Fredy [Univ Mayor, Fac Ciencias, Escuela Agron] | es_CL |
| dc.contributor.author | Felipe Jaramillo, Andres | es_CL |
| dc.contributor.author | Riquelme, Silvia | es_CL |
| dc.contributor.author | Felipe Montoya, Luis | es_CL |
| dc.contributor.author | Sánchez-Sanhueza, Gabriela | es_CL |
| dc.contributor.author | Medinam, Carlos | es_CL |
| dc.contributor.author | Rojas, David | es_CL |
| dc.contributor.author | Pablo Sanhueza, Juan | es_CL |
| dc.contributor.author | Francisco Melendrez, Manuel | es_CL |
| dc.date.accessioned | 2020-04-12T14:11:55Z | |
| dc.date.accessioned | 2020-04-14T15:37:41Z | |
| dc.date.available | 2020-04-12T14:11:55Z | |
| dc.date.available | 2020-04-14T15:37:41Z | |
| dc.date.issued | 2019 | es_CL |
| dc.identifier.citation | Felipe Jaramillo, A., Riquelme, S., Montoya, L. F., Sánchez‐Sanhueza, G., Medinam, C., Rojas, D., ... & Francisco Meléndrez, M. (2019). Influence of the concentration of copper nanoparticles on the thermo‐mechanical and antibacterial properties of nanocomposites based on poly (butylene adipate‐co‐terephthalate). Polymer Composites, 40(5), 1870-1882. | es_CL |
| dc.identifier.issn | 0272-8397 | es_CL |
| dc.identifier.issn | 1548-0569 | es_CL |
| dc.identifier.uri | https://doi.org/10.1002/pc.24949 | es_CL |
| dc.identifier.uri | http://repositorio.umayor.cl/xmlui/handle/sibum/6420 | |
| dc.description.abstract | Poly(butylene adipate-co-terephthalate) (PBAT) was mixed with copper nanoparticles (Cu-NPs) in concentrations of 1%, 3%, and 5% with particle size between 100 nm and 200 nm by the melting method. A morphological, thermal, and structural characterization of the nanocomposites (NCs-PBAT/Cu) was performed to analyze the effect of the Cu-NPs on the polymer chains, as well as to explain the influence on their crystallinity, and its influence on the thermomechanical and antibacterial properties. The percentage of crystallinity (X-c) increased 6.7% to 9.5% with the amount of Cu-NPs in the matrix. E-modulus was slightly improved from 84.04 to 87.7 MPa, in the same way the degradation temperature (T-d) of the PBTA was improved from 420.7 degrees C to 427.2 degrees C for 5% loading of Cu-NPs. In contrast, Delta H-m decreased from 12.50 to 6.96 J/g, indicating that there was no significant modification of the PBAT chain, mainly by heterogeneous nucleation in the presence of Cu-NPs, which act as a heat barrier. No blue or red shifts we observed in the nanocomposites Fourier transform infrared (FTIR) spectra, indicating there is no effective interaction between PBAT and Cu-NPs. The nanocomposites showed excellent antibacterial properties inhibiting 100% of the strains Enterococcus faecalis, Streptococcus mutans, and Staphylococcus aureus, at 2 hours of treatment. For more resistant strains such as Acinetobacter baumannii, the NCs-PBAT/Cu did not show antibacterial activity at any time of treatment. POLYM. COMPOS., 40:1870-1882, 2019. (c) 2018 Society of Plastics Engineers | es_CL |
| dc.description.sponsorship | National Commission for Scientific and Technological Research, (CONICYT)Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT) [2014-63140015, 2014-21140951, 2015-21150766, 2016-21160562]; Project FONDEQUIP [EQM150139] | es_CL |
| dc.description.sponsorship | Contract grant sponsor: National Commission for Scientific and Technological Research, (CONICYT) for the scholarships CONICYT-PCHA/National Doctorate; contract grant number: 2014-63140015, 2014-21140951, 2015-21150766, and 2016-21160562; contract grant sponsor: Project FONDEQUIP; contract grant number: EQM150139. | es_CL |
| dc.language.iso | en | es_CL |
| dc.publisher | WILEY | es_CL |
| dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Chile | |
| dc.source | Polym. Compos., MAY, 2019. 40(5): p. 1870-1882 | |
| dc.subject | Materials Science, Composites; Polymer Science | es_CL |
| dc.title | Influence of the concentration of copper nanoparticles on the thermo-mechanical and antibacterial properties of nanocomposites based on poly(butylene adipate-co-terephthalate) | es_CL |
| dc.type | Artículo | es_CL |
| umayor.facultad | CIENCIAS | |
| umayor.politicas.sherpa/romeo | RoMEO yellow journal (Puede archivar el pre-print (ie la versión previa a la revisión por pares). Disponible en: http://sherpa.ac.uk/romeo/index.php | es_CL |
| umayor.indexado | WOS:000467582900018 | es_CL |
| umayor.indexado | SIN PMID | es_CL |
| dc.identifier.doi | DOI: 10.1002/pc.24949 | es_CL] |
| umayor.indicadores.wos-(cuartil) | Q2 | es_CL |
| umayor.indicadores.scopus-(scimago-sjr) | SCIMAGO/ INDICE H: 73 H | es_CL |