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Preparation and Antibacterial Performance of Zinc Pyrithione/Montmorillonite

DOI: 10.3724/sp.j.1077.2010.00512

Keywords: pyrithione anion, montmorillonite, intercalation, antibacterial activity

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Abstract:

A novel antibacterial composite, zinc pyrithione/montmorillonite(ZPT/MMT) was in situ prepared by introducing pyrithione anion into the galleries of zinc-exchanged montmorillonite. The results of XRD, FT-IR, TG, DSC and UV-Vis DRS show that pyrithione anion exists in the form of zinc pyrithione, resulting in an increase of basal spacing of montmorillonite (d001 value) from 1.29nm to 1.85nm, and the ZPT/MMT has a favorable light and thermal stability (the decomposition temperature is above 240℃). Antibacterial assays indicate that ZPT/MMT has an excellent antibacterial activity against Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus.

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