{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,5]],"date-time":"2026-09-05T04:56:44Z","timestamp":1788584204493,"version":"build-2803163510"},"reference-count":56,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2023,2,8]],"date-time":"2023-02-08T00:00:00Z","timestamp":1675814400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Composites based on polylactic acid (PLA) and copper for food packaging applications were obtained. Copper clusters were synthesized in polyethylene glycols 400 and 600, respectively, using ascorbic acid as a reducing agent, by reactive milling. Copper clusters were characterized by Scanning Electron Microscopy (SEM), Fourier Transform Infrared (FT-IR), and Ultraviolet-Visible (UV-VIS) spectroscopy. Copper\/PLA composites containing Proviplast as plasticizer were characterized by FT-IR spectroscopy, mechanical tests, Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TGA), absorption of the saline solution, contact angle, and antibacterial properties. It was observed that the concentration of Copper\/PEG influenced the investigated properties. The mechanical properties of the samples decreased with the increasing of Copper\/PEG concentration. We recorded the phase transformation temperatures and identified the exothermic or endothermic processes. The lowest absorption values were recorded in the case of the sample containing 1% Cu. The contact angle decreases with the increase in the concentration of the PEG 600-Cu mixture in the recipes. The increase in the content of Cu clusters favors the decrease in the temperature, taking place 15% wt mass losses. The obtained composites showed antibacterial properties for all tested strains. These materials could be used as alternative materials for obtaining biodegradable food packaging.<\/jats:p>","DOI":"10.3390\/ma16041415","type":"journal-article","created":{"date-parts":[[2023,2,8]],"date-time":"2023-02-08T03:57:16Z","timestamp":1675828636000},"page":"1415","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":36,"title":["Antimicrobial Poly (Lactic Acid)\/Copper Nanocomposites for Food Packaging Materials"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0062-2427","authenticated-orcid":false,"given":"Violeta","family":"Popescu","sequence":"first","affiliation":[{"name":"Faculty of Materials Engineering and the Environment, Technical University of Cluj-Napoca, Bd. Muncii 103-105, 400641 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Doina","family":"Prodan","sequence":"additional","affiliation":[{"name":"Raluca Ripan Institute of Research in Chemistry, Babes Bolyai University, 30 Fantanele Street, 400294 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stanca","family":"Cuc","sequence":"additional","affiliation":[{"name":"Raluca Ripan Institute of Research in Chemistry, Babes Bolyai University, 30 Fantanele Street, 400294 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2960-9832","authenticated-orcid":false,"given":"Codru\u0163a","family":"Saro\u015fi","sequence":"additional","affiliation":[{"name":"Raluca Ripan Institute of Research in Chemistry, Babes Bolyai University, 30 Fantanele Street, 400294 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6418-6129","authenticated-orcid":false,"given":"Gabriel","family":"Furtos","sequence":"additional","affiliation":[{"name":"Raluca Ripan Institute of Research in Chemistry, Babes Bolyai University, 30 Fantanele Street, 400294 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrei","family":"Moldovan","sequence":"additional","affiliation":[{"name":"Faculty of Materials Engineering and the Environment, Technical University of Cluj-Napoca, Bd. 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Medacril S.R.L, 8 Carpa\u021bi Street, Media\u015f, 551022 Sibiu, Romania"},{"name":"Petroleum-Gas University of Ploie\u015fti, 39 Bucuresti Blvd., 100680 Ploie\u015fti, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,2,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Cruz, R.M.S., Krauter, V., Krauter, S., Agriopoulou, S., Weinrich, R., Herbes, C., Scholten, P.B.V., Uysal-Unalan, I., Sogut, E., and Kopacic, S. (2022). Bioplastics for Food Packaging: Environmental Impact, Trends and Regulatory Aspects. Foods, 11.","DOI":"10.3390\/foods11193087"},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Ncube, L.K., Ude, A.U., Ogunmuyiwa, E.N., Zulkifli, R., and Beas, I.N. (2020). Environmental impact of food packaging materials: A review of contemporary development from conventional plastics to polylactic acid based materials. 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