Preparation and properties of methylcellulose/nanocellulose/СаF 2 :Но polymer-inorganic composite films for two-micron radiation visualizers
| Autor: | Sergey V. Kuznetsov, Alexander E. Baranchikov, Pavel P. Fedorov, A. A. Pynenkov, D. V. Pominova, Polina A. Ryabochkina, Vladimir Ivanov, Oleg V. Uvarov, K. N. Nishchev, Anna A. Luginina, M. N. Mayakova, Valery V. Voronov, M. V. Chernov, A. A. Lyapin |
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| Rok vydání: | 2017 |
| Předmět: |
Organic Chemistry
Composite number Analytical chemistry Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry 0104 chemical sciences Nanocellulose Inorganic Chemistry Thermogravimetry chemistry.chemical_compound Differential scanning calorimetry chemistry Dynamic light scattering Environmental Chemistry Polystyrene Physical and Theoretical Chemistry 0210 nano-technology Luminescence |
| Zdroj: | Journal of Fluorine Chemistry. 202:9-18 |
| ISSN: | 0022-1139 |
| Popis: | The series of polymer-inorganic composite films, containing methylcellulose with incorporated cellulose nanocrystals, and synthesized fluorite-type Ca 1-x Ho x F 2+x nanoparticles or thermally treated particle Ca 1-x Ho x F 2+x , were prepared by mixing aqueous dispersions of the aforementioned ingredients followed by film formation on polystyrene support and drying under air at room temperature and then at 85 °C. Fluorite-type Ca 1-x Ho x F 2+x samples and corresponding films were characterized by X-ray diffraction (XRD), differential scanning calorimetry (DSC), thermogravimetry analysis (TGA), dynamic light scattering (DLS), scanning (SEM) and transmission (TEM) electron microscopy. For the first time, the up-conversion luminescence of the Ho 3+ -containing composite films ( 5 I 7 energy level excitation) has been described for the visible spectrum range. The present paper also proposes a method for visualizing the near infrared (IR) laser radiation with the use of the prepared methylcellulose/nanocellulose/Ca 1-x Ho x F 2+x composite films as well as discussion of the optimal compositions for the said films. |
| Databáze: | OpenAIRE |
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