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    Pyrrolidone-based polymers capable of reversible iodine capture for reuse in antibacterial applications

    Year: 2020

    Journal: J. Hazard. Mater., Volume 384, FEB 15

    Authors: Borjihan, Qinggele; Zhang, Zhe; Zi, Xinyuan; Huang, Mengxue; Chen, Yiqi; Zhang, Yanling; Dong, Alideertu

    Organizations: National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21304044, 51663019]; Natural Science Foundation of Inner Mongolia Autonomous Region [2015MS0520]; State Key Laboratory of Medicinal Chemical Biology [201603006, 2018051]; Program of Higher-Level Talents of Inner Mongolia University [30105-125136]; State Key Laboratory of Polymer Physics and ChemistryChinese Academy of Sciences [2018-08]

    Keywords: Pyrrolidone-based polymer; Reversible iodine capture; Povidone-iodine; Reutilization; Antibacterial use

    Numerous emerging and re-emerging advanced materials have been successful in capturing iodine pollutants that pose an unprecedented global challenge to public health. However, little attention has been paid to the reutilization of the captured iodine. Herein, we report on a pyrrolidone-based polymer capable of reversible iodine capture for reutilization in antibacterial applications. The pyrrolidone-based polymer poly(N-vinyl-2-pyrrolidone-co-vinyl acetate), denoted as P(VAc-NVP), was synthesized facilely via a one-step radical copolymerization strategy, and the synthesis was regulated by step-by-step optimization, specifically by tuning the feed ratio of NVP to VAc. The as-synthesized P(VAc-NVP) copolymer functioned as an adsorbent for iodine in various solutions, including water/ethanol, cyclohexane, and petroleum ether, in addition to having the special capability of releasing iodine in the presence of starch or bacteria. This opens up a new horizon for its functional practical use as a flexible adsorbent to capture iodine for safe disposal. Interestingly, the P(VAc-NVP) copolymer, after adsorbing iodine, showed antibacterial ability against pathogenic bacteria, including Staphylococcus aureus and Escherichia coll., when a series of simulated and practical antibacterial assays were conducted. It is believed that this proposed strategy based on the synergism of iodine capture and antibacterial use should have great potential for environmental remediation and public healthcare.
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