Remote control of biofouling by heating PDMS/MnZn ferrite nanocomposites with an alternating magnetic field

Panigrahi, R; Oh, HS; Sharma, V; Lee, KWK; Rice, SA; Cohn, D; Ramanujan, RV

Remote control of biofouling by heating PDMS/MnZn ferrite nanocomposites with an alternating magnetic field

Panigrahi, R Oh, HS Sharma, V Lee, KWK Rice, SA

Cohn, D Ramanujan, RV

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Publication Type:: Journal Article
Citation:: Journal of Chemical Technology and Biotechnology, 2019, 94 (8), pp. 2713 - 2720
Issue Date:: 2019-08-01

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Field	Value	Language
dc.contributor.author	Panigrahi, R	en_US
dc.contributor.author	Oh, HS	en_US
dc.contributor.author	Sharma, V	en_US
dc.contributor.author	Lee, KWK	en_US
dc.contributor.author	Rice, SA https://orcid.org/0000-0002-9486-2343	en_US
dc.contributor.author	Cohn, D	en_US
dc.contributor.author	Ramanujan, RV	en_US
dc.date.issued	2019-08-01	en_US
dc.identifier.citation	Journal of Chemical Technology and Biotechnology, 2019, 94 (8), pp. 2713 - 2720	en_US
dc.identifier.issn	0268-2575	en_US
dc.identifier.uri	http://hdl.handle.net/10453/136486
dc.description.abstract	© 2019 Society of Chemical Industry BACKGROUND: The accumulation of unwanted microorganisms on wetted surfaces, leading to surface damage and contamination, is a common and significant global issue. RESULTS: Herein, we report a novel technique where the growth of microorganisms can be readily controlled by coating the surfaces with a polydimethylsiloxane (PDMS)/Mn0.8Zn0.2Fe2O4 (manganese-zinc ferrite) nanocomposite followed by applying alternating magnetic field (AMF). The PDMS/MnZn ferrite nanocomposite is light weight and thermally stable (up to ∼ 330 °C) that can form a flexible coating. PDMS also provides hydrophobicity, which is further enhanced by the addition of Mn and Zn. The improved hydrophobicity makes the coated surface less susceptible to biofilm formation. When external AMF was applied to nanocomposites containing various MnZn ferrite nanoparticle loads of 10%, 20% and 30%, the temperature of the surface of nanocomposites reached to 80, 120 and 160 °C, respectively. Successful biofilm deactivation was achieved by heating the nanocomposites via AMF application, as shown in the biofilm test where up to ∼ 70% of the Pseudomonas aeruginosa PAO1 biofilm cells were killed when the AMF was applied for 20 min to the nanocomposites containing 30% nanoparticles. CONCLUSION: Coating the surface with PDMS/MnZn ferrite nanocomposites followed by applying external AMF can be an effective way to remove biofilm remotely in a wide range of applications. © 2019 Society of Chemical Industry.	en_US
dc.relation.ispartof	Journal of Chemical Technology and Biotechnology	en_US
dc.relation.isbasedon	10.1002/jctb.6083	en_US
dc.subject.classification	Biotechnology	en_US
dc.title	Remote control of biofouling by heating PDMS/MnZn ferrite nanocomposites with an alternating magnetic field	en_US
dc.type	Journal Article
utslib.citation.volume	8	en_US
utslib.citation.volume	94	en_US
utslib.for	1007 Nanotechnology	en_US
utslib.for	0303 Macromolecular and Materials Chemistry	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - ithree - Institute of Infection, Immunity and Innovation
utslib.copyright.status	closed_access
pubs.issue	8	en_US
pubs.publication-status	Published	en_US
pubs.volume	94	en_US

Abstract:

© 2019 Society of Chemical Industry BACKGROUND: The accumulation of unwanted microorganisms on wetted surfaces, leading to surface damage and contamination, is a common and significant global issue. RESULTS: Herein, we report a novel technique where the growth of microorganisms can be readily controlled by coating the surfaces with a polydimethylsiloxane (PDMS)/Mn0.8Zn0.2Fe2O4 (manganese-zinc ferrite) nanocomposite followed by applying alternating magnetic field (AMF). The PDMS/MnZn ferrite nanocomposite is light weight and thermally stable (up to ∼ 330 °C) that can form a flexible coating. PDMS also provides hydrophobicity, which is further enhanced by the addition of Mn and Zn. The improved hydrophobicity makes the coated surface less susceptible to biofilm formation. When external AMF was applied to nanocomposites containing various MnZn ferrite nanoparticle loads of 10%, 20% and 30%, the temperature of the surface of nanocomposites reached to 80, 120 and 160 °C, respectively. Successful biofilm deactivation was achieved by heating the nanocomposites via AMF application, as shown in the biofilm test where up to ∼ 70% of the Pseudomonas aeruginosa PAO1 biofilm cells were killed when the AMF was applied for 20 min to the nanocomposites containing 30% nanoparticles. CONCLUSION: Coating the surface with PDMS/MnZn ferrite nanocomposites followed by applying external AMF can be an effective way to remove biofilm remotely in a wide range of applications. © 2019 Society of Chemical Industry.

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http://hdl.handle.net/10453/136486