Photocatalytic inhibition of bacteria by TiO2 nanotubes-doped polyethylene composites

Daniela Yañez, Sichem Guerrero, Ingo Lieberwirth, María Teresa Ulloa, Tatiana Gomez, Franco M. Rabagliati, Paula A. Zapata

Resultado de la investigación: Article

20 Citas (Scopus)

Resumen

Polyethylene (PE) and polyethylene-octadecene (LLDPE) composites containing titanium dioxide nanotubes were synthesized and applied to the inhibition of selected bacteria. It was found that polymerization rate of the polymerizations increased with the incorporation of the octadecene compared with bare ethylene, while with modified nanotubes (O-TiO2-Ntbs) the catalytic activity showed a slight decrease compared with the pure polymer. Regarding physical properties, the melting temperature and cristallinity of PE was higher than LLDPE. LLDPE presented lower rigidity than PE and thus lower Young's modulus. On the other hand, with the incorporation of nanotubes, Young's modulus did not change significantly with respect to PE. After 2h of contact, the PE/O-TiO2-Ntbs composite showed a reduction of Escherichia coli of 36.7% under no UVA irradiations. In contrast, LLDPE/O-TiO2-Ntbs showed 63.5%. The photocatalytic reduction (under UVA light) was much higher and after 60min the LLDPE/O-TiO2-Ntbs composites showed a bacterial reduction of 99.9%, whereas the PE/O-TiO2-Ntbs showed 42.6% of catalytic reduction.

Idioma originalEnglish
Páginas (desde-hasta)255-261
Número de páginas7
PublicaciónApplied Catalysis A: General
Volumen489
N.º1
DOI
EstadoPublished - 1 ene 2015
Publicado de forma externa

Huella dactilar

Polyethylene
Nanotubes
Polyethylenes
Linear low density polyethylenes
Bacteria
Composite materials
Elastic moduli
Polymerization
Rigidity
Titanium dioxide
Escherichia coli
Melting point
Catalyst activity
Polymers
Ethylene
Physical properties
Irradiation

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Citar esto

Yañez, D., Guerrero, S., Lieberwirth, I., Ulloa, M. T., Gomez, T., Rabagliati, F. M., & Zapata, P. A. (2015). Photocatalytic inhibition of bacteria by TiO2 nanotubes-doped polyethylene composites. Applied Catalysis A: General, 489(1), 255-261. https://doi.org/10.1016/j.apcata.2014.10.051
Yañez, Daniela ; Guerrero, Sichem ; Lieberwirth, Ingo ; Ulloa, María Teresa ; Gomez, Tatiana ; Rabagliati, Franco M. ; Zapata, Paula A. / Photocatalytic inhibition of bacteria by TiO2 nanotubes-doped polyethylene composites. En: Applied Catalysis A: General. 2015 ; Vol. 489, N.º 1. pp. 255-261.
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title = "Photocatalytic inhibition of bacteria by TiO2 nanotubes-doped polyethylene composites",
abstract = "Polyethylene (PE) and polyethylene-octadecene (LLDPE) composites containing titanium dioxide nanotubes were synthesized and applied to the inhibition of selected bacteria. It was found that polymerization rate of the polymerizations increased with the incorporation of the octadecene compared with bare ethylene, while with modified nanotubes (O-TiO2-Ntbs) the catalytic activity showed a slight decrease compared with the pure polymer. Regarding physical properties, the melting temperature and cristallinity of PE was higher than LLDPE. LLDPE presented lower rigidity than PE and thus lower Young's modulus. On the other hand, with the incorporation of nanotubes, Young's modulus did not change significantly with respect to PE. After 2h of contact, the PE/O-TiO2-Ntbs composite showed a reduction of Escherichia coli of 36.7{\%} under no UVA irradiations. In contrast, LLDPE/O-TiO2-Ntbs showed 63.5{\%}. The photocatalytic reduction (under UVA light) was much higher and after 60min the LLDPE/O-TiO2-Ntbs composites showed a bacterial reduction of 99.9{\%}, whereas the PE/O-TiO2-Ntbs showed 42.6{\%} of catalytic reduction.",
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Yañez, D, Guerrero, S, Lieberwirth, I, Ulloa, MT, Gomez, T, Rabagliati, FM & Zapata, PA 2015, 'Photocatalytic inhibition of bacteria by TiO2 nanotubes-doped polyethylene composites', Applied Catalysis A: General, vol. 489, n.º 1, pp. 255-261. https://doi.org/10.1016/j.apcata.2014.10.051

Photocatalytic inhibition of bacteria by TiO2 nanotubes-doped polyethylene composites. / Yañez, Daniela; Guerrero, Sichem; Lieberwirth, Ingo; Ulloa, María Teresa; Gomez, Tatiana; Rabagliati, Franco M.; Zapata, Paula A.

En: Applied Catalysis A: General, Vol. 489, N.º 1, 01.01.2015, p. 255-261.

Resultado de la investigación: Article

TY - JOUR

T1 - Photocatalytic inhibition of bacteria by TiO2 nanotubes-doped polyethylene composites

AU - Yañez, Daniela

AU - Guerrero, Sichem

AU - Lieberwirth, Ingo

AU - Ulloa, María Teresa

AU - Gomez, Tatiana

AU - Rabagliati, Franco M.

AU - Zapata, Paula A.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - Polyethylene (PE) and polyethylene-octadecene (LLDPE) composites containing titanium dioxide nanotubes were synthesized and applied to the inhibition of selected bacteria. It was found that polymerization rate of the polymerizations increased with the incorporation of the octadecene compared with bare ethylene, while with modified nanotubes (O-TiO2-Ntbs) the catalytic activity showed a slight decrease compared with the pure polymer. Regarding physical properties, the melting temperature and cristallinity of PE was higher than LLDPE. LLDPE presented lower rigidity than PE and thus lower Young's modulus. On the other hand, with the incorporation of nanotubes, Young's modulus did not change significantly with respect to PE. After 2h of contact, the PE/O-TiO2-Ntbs composite showed a reduction of Escherichia coli of 36.7% under no UVA irradiations. In contrast, LLDPE/O-TiO2-Ntbs showed 63.5%. The photocatalytic reduction (under UVA light) was much higher and after 60min the LLDPE/O-TiO2-Ntbs composites showed a bacterial reduction of 99.9%, whereas the PE/O-TiO2-Ntbs showed 42.6% of catalytic reduction.

AB - Polyethylene (PE) and polyethylene-octadecene (LLDPE) composites containing titanium dioxide nanotubes were synthesized and applied to the inhibition of selected bacteria. It was found that polymerization rate of the polymerizations increased with the incorporation of the octadecene compared with bare ethylene, while with modified nanotubes (O-TiO2-Ntbs) the catalytic activity showed a slight decrease compared with the pure polymer. Regarding physical properties, the melting temperature and cristallinity of PE was higher than LLDPE. LLDPE presented lower rigidity than PE and thus lower Young's modulus. On the other hand, with the incorporation of nanotubes, Young's modulus did not change significantly with respect to PE. After 2h of contact, the PE/O-TiO2-Ntbs composite showed a reduction of Escherichia coli of 36.7% under no UVA irradiations. In contrast, LLDPE/O-TiO2-Ntbs showed 63.5%. The photocatalytic reduction (under UVA light) was much higher and after 60min the LLDPE/O-TiO2-Ntbs composites showed a bacterial reduction of 99.9%, whereas the PE/O-TiO2-Ntbs showed 42.6% of catalytic reduction.

KW - Nanocomposites

KW - Photocatalytic inhibition

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JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

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Yañez D, Guerrero S, Lieberwirth I, Ulloa MT, Gomez T, Rabagliati FM y otros. Photocatalytic inhibition of bacteria by TiO2 nanotubes-doped polyethylene composites. Applied Catalysis A: General. 2015 ene 1;489(1):255-261. https://doi.org/10.1016/j.apcata.2014.10.051