Structural, mechanical, and antibacterial features of curcumin/polyurethane nanocomposites

ABSTRACT Various types of bacteria inhabit many surfaces thus causing problems which can have very strong impact on human health. Here we present a study of photophysical, mechanical, and antibacterial properties of curcumin/polyurethane nanocomposites prepared by swell‐encapsulation‐shrink method....

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Published in:Journal of applied polymer science 2019-04, Vol.136 (13), p.n/a
Main Authors: Marković, Zoran, Kováčová, Mária, Mičušík, Matej, Danko, Martin, Švajdlenková, Helena, Kleinová, Angela, Humpolíček, Petr, Lehocký, Marián, Marković, Biljana Todorović, Špitalský, Zdeno
Format: Article
Language:English
Subjects:
60 APPLIED LIFE SCIENCES
Bacteria
CURCUMIN
Dynamic mechanical analysis
E coli
ELECTRIC CONDUCTIVITY
ESCHERICHIA COLI
Hydrophobicity
IRRADIATION
Light irradiation
MATERIALS SCIENCE
MECHANICAL PROPERTIES
Morphology
NANOCOMPOSITES
NANOSCIENCE AND NANOTECHNOLOGY
Organic chemistry
PERIODICITY
PHOTOLUMINESCENCE
Polymers
Polyurethane resins
POLYURETHANES
Singlet oxygen
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Summary:ABSTRACT Various types of bacteria inhabit many surfaces thus causing problems which can have very strong impact on human health. Here we present a study of photophysical, mechanical, and antibacterial properties of curcumin/polyurethane nanocomposites prepared by swell‐encapsulation‐shrink method. The prepared nanocomposites have been characterized for degree of swelling, surface morphology, mechanical properties, chemical contents, photoluminescence, hydrophobicity, potentials for singlet oxygen generation, and antibacterial activity. Dynamic mechanical analysis has shown slight changes of glass temperature of curcumin/polyurethane nanocomposites due to blue light irradiation. It was found that nanocomposites have very strong photoluminescence, become photoactive upon blue light irradiation at 470 nm and generate singlet oxygen. Conducted antibacterial tests have shown very strong activity of these nanocomposites especially toward Escherichia coli. These bacteria strains have been eliminated completely only after 1 h irradiation by blue light. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47283.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.47283