Mechanical and Antimicrobial Polyethylene Composites with CaO Nanoparticles
| العنوان: | Mechanical and Antimicrobial Polyethylene Composites with CaO Nanoparticles |
|---|---|
| المؤلفون: | Carlos Loyo, Lina M Rivas, Nicolás Amigo, J. Andrés Ortiz, Tatiana Gomez, Alejandro Cament, Francesca Antonella Sepúlveda, Cristian Silva, Pablo Reyes, Daniel Canales, Paula A. Zapata, Felipe Bobillier, María Teresa Ulloa |
| المصدر: | Polymers Volume 12 Issue 9 Polymers, Vol 12, Iss 2132, p 2132 (2020) |
| بيانات النشر: | Multidisciplinary Digital Publishing Institute, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | chemistry.chemical_classification, Materials science, Nanocomposite, CaO nanoparticles, Polymers and Plastics, Polymer nanocomposite, nanocomposite, Sonication, ion release (Ca2+), Nanoparticle, General Chemistry, Polymer, Polyethylene, mechanical properties, polyethylene matrix, Article, lcsh:QD241-441, Crystallinity, chemistry.chemical_compound, chemistry, lcsh:Organic chemistry, biocidal activity, Surface modification, Composite material |
| الوصف: | Low-density polyethylene composites containing different sizes of calcium oxide (CaO) nanoparticles were obtained by melt mixing. The CaO nanoparticles were synthesized by either the sol-gel or sonication methods, obtaining two different sizes: ca. 55 nm and 25 nm. These nanoparticles were used either as-synthesized or were modified organically on the surface with oleic acid (Mod-CaO), at concentrations of 3, 5, and 10 wt% in the polymer. The Mod-CaO nanoparticles of 25 nm can act as nucleating agents, increasing the polymer&rsquo s crystallinity. The Young&rsquo s Modulus increased with the Mod-CaO nanoparticles, rendering higher reinforcement effects with an increase as high as 36%. The reduction in Escherichia coli bacteria in the nanocomposites increased with the amount of CaO nanoparticles, the size reduction, and the surface modification. The highest antimicrobial behavior was found in the composites with a Mod-CaO of 25 nm, presenting a reduction of 99.99%. This strong antimicrobial effect can be associated with the release of the Ca2+ from the composites, as studied for the composite with 10 wt% nanoparticles. The ion release was dependent on the size of the nanoparticles and their surface modification. These findings show that CaO nanoparticles are an excellent alternative as an antimicrobial filler in polymer nanocomposites to be applied for food packaging or medical devices. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2073-4360 |
| DOI: | 10.3390/polym12092132 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::34e5ce374899d2ae53154c604fb03d28 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....34e5ce374899d2ae53154c604fb03d28 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20734360 |
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| DOI: | 10.3390/polym12092132 |