Antimicrobial High-Density Polyethylene (HDPE)/ZnO Nanocomposites Obtained by in situ Polymerization

Nanostructured zinc oxide (ZnO) prepared by combustion in solution was used to obtain nanocomposites. The ZnO particles were characterized by Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD), and scanning electron microscopy (SEM), showing crystallite size of 32 nm and a superficial area of 32....

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Published inJournal of the Brazilian Chemical Society Vol. 31; no. 8; pp. 1566 - 1574
Main Authors Pavoski, Giovani, Kalikoski, Renan, Souza, Gustavo, Baldisserotto, Daniel, Brum, Luiz Fernando, dos Santos, Cristiane, Bergmann, Carlos, Brandelli, Adriano, Jacobi, Marly, Galland, Griselda
Format Journal Article
LanguageEnglish
Portuguese
Published Sociedade Brasileira de Química 01.08.2020
Subjects
CHEMISTRY, MULTIDISCIPLINARY
in situ polymerization
antimicrobial properties
nanostructured
zinc oxide
polyethylene
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Summary:Nanostructured zinc oxide (ZnO) prepared by combustion in solution was used to obtain nanocomposites. The ZnO particles were characterized by Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD), and scanning electron microscopy (SEM), showing crystallite size of 32 nm and a superficial area of 32.6 m2 g-1. Nanocomposites with 1, 3, and 5 wt.% of ZnO in the polymeric matrix were obtained using the in situ polymerization of ethylene with catalytic activities between 1500-1700 kg (molZr h PE)-1. The high-density polyethylene nanocomposites (PEZnO) were characterized by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), SEM, and transmission electron microscopy (TEM). The nanocomposites with 1 wt.% ZnO gave excellent mechanical properties, and all were active against Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria.
ISSN:0103-5053
1678-4790
DOI:10.21577/0103-5053.20200042