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Investigation of the Bleaching Properties of Photochromic Nanocomposites Based on Poly(Vinyl Alcohol) and Tungstophosphoric Acid
Abstract
We have shown that the discoloration of photochromic poly(vinyl alcohol)–tungstophosphoric acid (PVA-TPA) nanocomposite films and PVA-TPA films containing glycerol (PVA-TPA-GL) colored by UV irradiation can be greatly accelerated by increasing the concentration of GL in the films and the ambient relative humidity. This study resolves the issues of polymer-heteropolyacid nanocomposites associated with their slow bleaching and, thus, makes them potentially applicable as new functional materials for inkless and erasable printing, anti-counterfeiting, sensors, smart windows.
About the Authors
A. A. Gorbachev
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
Belarus
Minsk
O. N. Tretinnikov
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
Belarus
Minsk
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Review
For citations:
Gorbachev A.A., Tretinnikov O.N. Investigation of the Bleaching Properties of Photochromic Nanocomposites Based on Poly(Vinyl Alcohol) and Tungstophosphoric Acid. Zhurnal Prikladnoii Spektroskopii. 2025;92(5):588-592. (In Russ.)
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