Photocatalytic inhibition of bacteria by TiO2 nanotubes-doped polyethylene composites
作者： Daniela Yañez , Sichem Guerrero , Ingo Lieberwirth , María Teresa Ulloa , Tatiana Gomez
DOI: 10.1016/J.APCATA.2014.10.051
关键词:
摘要: Abstract Polyethylene (PE) and polyethylene-octadecene (LLDPE) composites containing titanium dioxide nanotubes were synthesized applied to the inhibition of selected bacteria. It was found that polymerization rate polymerizations increased with incorporation octadecene compared bare ethylene, while modified (O–TiO2–Ntbs) catalytic activity showed a slight decrease pure polymer. Regarding physical properties, melting temperature cristallinity PE higher than LLDPE. LLDPE presented lower rigidity thus Young's modulus. On other hand, nanotubes, modulus did not change significantly respect PE. After 2 h contact, PE/O–TiO2–Ntbs composite reduction Escherichia coli 36.7% under no UVA irradiations. In contrast, LLDPE/O–TiO2–Ntbs 63.5%. The photocatalytic (under light) much after 60 min LLDPE/O-TiO2-Ntbs bacterial 99.9%, whereas PE/O-TiO2-Ntbs 42.6% reduction.
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Anna Kubacka, Manuel Ferrer, María L. Cerrada, Cristina Serrano, Manuel Sánchez-Chaves, Marta Fernández-García, Alicia de Andrés, Rafael J. Jiménez Riobóo, Fernando Fernández-Martín, Marcos Fernández-García, Boosting TiO2-anatase antimicrobial activity: Polymer-oxide thin films Applied Catalysis B-environmental. ,vol. 89, pp. 441- 447 ,(2009) , 10.1016/J.APCATB.2009.01.002
Mirigul Altan, Huseyin Yildirim, Mechanical and Antibacterial Properties of Injection Molded Polypropylene/TiO2 Nano-Composites: Effects of Surface Modification Journal of Materials Science & Technology. ,vol. 28, pp. 686- 692 ,(2012) , 10.1016/S1005-0302(12)60116-9
Shahab Ansari Amin, Mohammad Pazouki, Azarmidokht Hosseinnia, None, Synthesis of TiO2–Ag nanocomposite with sol–gel method and investigation of its antibacterial activity against E. coli Powder Technology. ,vol. 196, pp. 241- 245 ,(2009) , 10.1016/J.POWTEC.2009.07.021
László Kőrösi, Imre Dékány, Preparation and investigation of structural and photocatalytic properties of phosphate modified titanium dioxide Colloids and Surfaces A: Physicochemical and Engineering Aspects. ,vol. 280, pp. 146- 154 ,(2006) , 10.1016/J.COLSURFA.2006.01.052
MI Mejia, JM Marín, G Restrepo, LA Rios, C Pulgarín, J Kiwi, None, Preparation, testing and performance of a TiO2/polyester photocatalyst for the degradation of gaseous methanol Applied Catalysis B-environmental. ,vol. 94, pp. 166- 172 ,(2010) , 10.1016/J.APCATB.2009.11.005
Paula A. Zapata, Laura Tamayo, Maritza Páez, Enrique Cerda, Ignacio Azócar, Franco M. Rabagliati, Nanocomposites based on polyethylene and nanosilver particles produced by metallocenic “in situ” polymerization: synthesis, characterization, and antimicrobial behavior European Polymer Journal. ,vol. 47, pp. 1541- 1549 ,(2011) , 10.1016/J.EURPOLYMJ.2011.05.008
Jun-Nan Nian, Shin-An Chen, Chien-Cheng Tsai, Hsisheng Teng, Structural Feature and Catalytic Performance of Cu Species Distributed over TiO2 Nanotubes Journal of Physical Chemistry B. ,vol. 110, pp. 25817- 25824 ,(2006) , 10.1021/JP064209W
Raúl Quijada, Griselda Barrera Galland, Raquel Santos Mauler, The influence of the comonomer in the copolymerization of ethylene with α‐olefins using C2H4[ind]2ZrCl2/methylaluminoxane as catalyst system Macromolecular Chemistry and Physics. ,vol. 197, pp. 3091- 3098 ,(1996) , 10.1002/MACP.1996.021971003
Paula A. Zapata, Humberto Palza, Luis S. Cruz, Ingo Lieberwirth, Fernando Catalina, Teresa Corrales, Franco M. Rabagliati, Polyethylene and poly(ethylene-co-1-octadecene) composites with TiO2 based nanoparticles by metallocenic “in situ” polymerization Polymer. ,vol. 54, pp. 2690- 2698 ,(2013) , 10.1016/J.POLYMER.2013.03.048
Walid Bahloul, Flavien Mélis, Véronique Bounor-Legaré, Philippe Cassagnau, Structural characterisation and antibacterial activity of PP/TiO2 nanocomposites prepared by an in situ sol–gel method Materials Chemistry and Physics. ,vol. 134, pp. 399- 406 ,(2012) , 10.1016/J.MATCHEMPHYS.2012.03.008