1. Preparation and self-sterilizing properties of Ag@TiO2-styrene-acrylic complex coatings.
- Author
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Zhou XD, Chen F, Yang JT, Yan XH, and Zhong MQ
- Subjects
- Anti-Bacterial Agents pharmacology, Escherichia coli drug effects, Hot Temperature, Microbial Sensitivity Tests, Nanoparticles ultrastructure, Particle Size, Spectrophotometry, Ultraviolet, Spectroscopy, Fourier Transform Infrared, Staphylococcus aureus drug effects, Static Electricity, Acrylates pharmacology, Coated Materials, Biocompatible pharmacology, Silver pharmacology, Sterilization, Styrene pharmacology, Titanium pharmacology
- Abstract
In this study, we report a simple and cost-effective method for self-sterilized complex coatings obtained by Ag@TiO2 particle incorporation into styrene-acrylic latex. The Ag@TiO2 particles were prepared via a coupling agent modification process. The composite latices characterized by transmission electron microscopy (TEM) study were highly homogeneous at the nanometric scale, and the Ag@TiO2 particles were well dispersed and exhibited an intimate contact between both the organic and inorganic components. The Ag@TiO2 nanoparticles significantly enhanced the absorption in the visible region and engendered a good heat-insulating effect of the complex coatings. Moreover, the Ag@TiO2 nanoparticle incorporation into this polymer matrix renders self-sterilized nanocomposite materials upon light excitation, which are tested against Escherichia coli and Staphylococcus aureus. The complex coatings display an impressive performance in the killing of all micro-organisms with a maximum for a Ag@TiO2 loading concentration of 2-5 wt.%. The weathering endurance of the complex coating was also measured., (Copyright © 2012 Elsevier B.V. All rights reserved.)
- Published
- 2013
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