Antibacterial Activity of Epoxy Resins Mixed with Polyelectrolyte/Silver Nanoparticle Composite Filler
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- MORI YASUTAKA
- Department of Applied Chemistry and Chemical Engineering, National Institute of Technology Toyama College
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- SHIROKAWA MASASHI
- Department of Applied Chemistry and Chemical Engineering, National Institute of Technology Toyama College
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- SASAKI SHOYA
- Department of Applied Chemistry and Chemical Engineering, National Institute of Technology Toyama College
Description
<p>In this study, antibacterial polyelectrolyte/silver nanoparticle (Ag NP) composite powder was mixed with epoxy resins as fillers to impart antibacterial activity. Either an anhydride-type or a polyamideamine-type curing agent was applied to a bisphenol A-type base compound to prepare the epoxy resins. Antibacterial assays of these resins against Escherichia coli were performed using the shake tube technique; suppression of antibacterial activity was found for the anhydride-type resin, although the polyamideamine-type resin did exhibit antibacterial activity. The anhydride-type resin is considered to have suppressed antibacterial activity because carboxylate ions derived from unreacted anhydride in aqueous medium can induce chemical adsorption of silver ions and/or charge repulsion of E. coli.</p>
Journal
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- Biocontrol Science
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Biocontrol Science 23 (3), 129-132, 2018
The Society for Antibacterial and Antifungal Agents, Japan