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Item type:Publication, Copper-Modified Cellulose Paper: A Comparative Study of How Antimicrobial Activity Is Affected by Particle Size and Testing Standards(MDPI AG, 2025-01-08); Viviana BenavidesThis study aims to provide evidence that when testing cellulose paper modified with copper particles (CuPs), the particle size and the analysis method influence the antimicrobial activity observed by this material. Commercial CuPs of nanometric size (2.7 nm, CuNPs) and micrometric size (2.5 µm, CuMPs) were used to modify cellulose paper sheets. CuPs were incorporated during the pulp disintegration phase (stage 1) of the sheet formation process, according to the ISO 5269-1:2005 standard. Modified paper sheets retained 16% and 14% of CuNPs and CuMPs, respectively. Additionally, CuPs were distributed randomly on the fiber surfaces, often forming aggregates. Finally, the antimicrobial activity of the modified paper sheets was evaluated using ISO 20645:2004 and ISO 20743:2013. The results showed that the antimicrobial activity assessed using each standard method is conditioned by the mechanism of action of the CuPs and, therefore, by their size. It was concluded that ISO 20645:2004 is suitable for evaluating the antibacterial effect of paper/CuNPs, as nanoparticles diffuse from the paper and are released into the culture medium. In contrast, ISO 20743:2013 can be used for both CuNP- and CuMP-based paper, as it evaluates the antibacterial effect based on the direct interaction between the copper particle and the bacteria.Scopus© Citations 2 14 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Fast and easy synthesis of silver, copper, and bimetallic nanoparticles on cellulose paper assisted by ultrasound(2023); Scopus© Citations 11 5 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Review on Generation and Characterization of Copper Particles and Copper Composites Prepared by Mechanical Milling on a Lab-Scale(2023)3Scopus© Citations 7 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Impact of mining on the metal content of dust in indigenous villages of northern Chile(2022); Scopus© Citations 38 3 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A Cross‐Cutting Approach for Relating Anthropocene, Environmental Injustice and Sacrifice Zones(2022)3Scopus© Citations 44 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Use of humic substances in froth flotation processes(2019); 45Scopus© Citations 6 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Correlation between the concentration and morphology of copper microparticles and their biocidal effect on paper sheets(2020); R. LavínScopus© Citations 3 4