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Title: Remote control of biofouling by heating PDMS/MnZn ferrite nanocomposites with an alternating magnetic field
Authors: Panigrahi, Ritwik
Oh, Hyun‐Suk
Sharma, Vinay
Cohn, Daniel
Lee, Kelvin Kai Wei
Rice, Scott A.
Ramanujan, Raju V.
Keywords: Nanocomposite
Issue Date: 2019
Source: Panigrahi, R., Oh, H.-S., Sharma, V., Lee, K. K. W., Rice, S. A., Cohn, D., & Ramanujan, R. V. (2019). Remote control of biofouling by heating PDMS/MnZn ferrite nanocomposites with an alternating magnetic field. Journal of Chemical Technology & Biotechnology, 94(8). doi:10.1002/jctb.6083
Series/Report no.: Journal of Chemical Technology & Biotechnology
Abstract: 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.
ISSN: 0268-2575
DOI: 10.1002/jctb.6083
Rights: © 2019 Society of Chemical Industry. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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