A New Approach to Development of Photochromic Composites Based on Hydrated Tungsten(VI) Oxide Particles and Cellulose Matrix
- Authors: Prokopovich P.F.1, Kirillova E.S.2, Gurtov V.A.2
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Affiliations:
- Institute of Geology, Karelian Research Centre, Russian Academy of Sciences
- Petrozavodsk State University
- Issue: Vol 10, No 5 (2019)
- Pages: 1023-1032
- Section: Physicochemical Principles of Creating Materials and Technologies
- URL: https://journals.rcsi.science/2075-1133/article/view/208066
- DOI: https://doi.org/10.1134/S2075113319050265
- ID: 208066
Cite item
Abstract
Abstract—The synthesis strategy for the photochromic material containing the ultrafine dispersions of orthotungstic acid embedded in a hydrated cellulose matrix was proposed. The composite was obtained from solution of cellulose in Schweizer’s reagent with addition of a tungstate containing agent (sodium tungstate dehydrate) by acid regeneration of cellulose and hydrated tungstic(VI). The structure and phase composition were determined for substances obtained in the course of synthesis. In addition, the photochromic properties were investigated by the screen printing technique of the coating: spectral dependences of the reflection factor for the chromatic and bleached states, kinetics of the photochromic transformations, and the dependence of the coloration efficiency on the length of the radiation mode.
About the authors
P. F. Prokopovich
Institute of Geology, Karelian Research Centre, Russian Academy of Sciences
Author for correspondence.
Email: proxy88@petrsu.ru
Russian Federation, Petrozavodsk, 185035
E. S. Kirillova
Petrozavodsk State University
Email: proxy88@petrsu.ru
Russian Federation, Petrozavodsk, 185014
V. A. Gurtov
Petrozavodsk State University
Email: proxy88@petrsu.ru
Russian Federation, Petrozavodsk, 185014