| Titre : |
Preparation and characterization of epoxy/oregano oil as an epoxy-based coating material with both antimicrobial effect and increased toughness |
| Type de document : |
texte imprimé |
| Auteurs : |
S. Zavareh, Auteur ; F. Darvishi, Auteur ; G. Samandari, Auteur |
| Année de publication : |
2015 |
| Article en page(s) : |
p. 404-414 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Antimicrobiens
Epoxydes
Huile essentielle d'origan
Morphologie (matériaux)
Polymères -- Additifs
Revêtements:Peinture
Thermodurcissables
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The main objective of this work is to prepare an epoxy-based hybrid material with antimicrobial activity and increased toughness using a natural modifier. Therefore, oregano essential oil (OEO) was employed as a new additive for an epoxy thermosetting polymer. Mechanical properties of epoxy/OEO hybrids with different OEO contents were studied. Impact strength and fracture resistance of the hybrids were increased with increasing OEO content up to 15%. With the addition of 15% OEO to epoxy, maximum improvements of 69% and 83% were obtained for impact and fracture properties, respectively. Tensile properties of the hybrid decreased somewhat with increasing OEO content. Morphological properties of the epoxy/OEO hybrids were studied using scanning electron microscopy and Fourier transform infrared spectrometry. A dispersion of micron-sized OEO particles in epoxy matrix with relatively strong interactions between two phases in the interfacial area was observed as the main morphology. Antimicrobial activity of epoxy/OEO hybrids was examined using the disk diffusion method. The hybrid samples clearly showed antimicrobial activity against gram-positive and gram-negative bacteria. The hybrid had higher antimicrobial activity for fungus strain in comparison with bacterial strains. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Preparation of specimens - Characterization - Antimicrobial activity assay
- RESULTS AND DISCUSSION : Mechanical properties - FTIR studies - Morphological properties - Antimicrobial activity |
| DOI : |
10.1007/s11998-014-9641-4 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-014-9641-4.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23664 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 12, N° 2 (03/2015) . - p. 404-414
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