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Hybridization of Layered Iron Hydroxide Nanoclays and Conducting Polymer for Controlled Oxygen Scavenger

1
Department of Chemistry and Medical Chemistry, College of Science and Technology, Yonsei University, Wonju 26493, Korea
2
Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, 5230 Odense, Denmark
3
Department of Chemistry, Hankuk University of Foreign Studies, Yongin 17035, Korea
*
Authors to whom correspondence should be addressed.
Appl. Sci. 2018, 8(10), 1742; https://doi.org/10.3390/app8101742
Received: 30 August 2018 / Revised: 20 September 2018 / Accepted: 20 September 2018 / Published: 27 September 2018
(This article belongs to the Special Issue Nanoclays for Technological Applications)
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Abstract

We suggest green rust (GR), one of layered nanoclays, as a potential oxygen scavenger. In order to achieve controlled oxygen scavenging ability, GRs were prepared with either sulfate or conducting polymer. X-ray diffraction (XRD) patterns showed that both GRs had hydrotalcite phase with slight differences in crystallinity upon anion type. X-ray adsorption spectra (XAS) indicated that the local structure of both GRs were similar regardless of the type of anion. On the other hand, zeta-potential values of GRs were different from each other according to the type of anion; GR with sulfate showed positive charge and GR with conducting polymer had slight negative charge due to the homogeneous hybridization. Scanning electron microscopy (SEM) also suggested that the hybridization of conducting polymer and GR was fairly homogenous without the formation of phase segregation or serious aggregation. According to the oxygen-scavenging activity test, GR with conducting polymer showed a retarded oxygen-scavenging rate compared with GR with sulfate due to protection and controlled oxidation-reduction by hybridized polymer. The current results suggested that the hybridization of nanoclay with conducting polymer could be utilized in long-term oxygen scavenging applications with a controlled oxidation-reduction reaction. View Full-Text
Keywords: green rust; conducting polymer; oxygen scavenging; retarding oxidation; food packaging green rust; conducting polymer; oxygen scavenging; retarding oxidation; food packaging
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Kim, H.-J.; Kim, T.-H.; Park, J.K.; Oh, J.-M. Hybridization of Layered Iron Hydroxide Nanoclays and Conducting Polymer for Controlled Oxygen Scavenger. Appl. Sci. 2018, 8, 1742.

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