Mechanical, Dielectric, and Spectroscopic Characteristics of "Micro/Nanocellulose + Oxide" Composites.
The set of composite materials that consist of micro/nanocellulose and complex K2Eu(MoO4)(PO4) luminescent oxide particles was prepared. The composites were studied by means of scanning electron microscopy, XRD analysis, dilatometry, differential scanning calorimetry and thermogravimetric analysis, and dielectric and luminescence spectroscopy.Dependencies of density, crystallinity, relative extension, thermal extension coefficient, dielectric relaxation parameters, intensity and shape of photoluminescence bands on temperature, and content of oxide component were studied. The structure of the composite without oxide is formed by grains of nearly 5-50 μm in size (crystallinity is about ~56%). Structure of the micro/nanocellulose samples which contain oxide particles is similar, but the cellulose grains are deformed by oxide particles. Dependencies of the abovementioned properties on temperature and oxide content were analyzed together with data on the size distribution of oxide particles for the samples for various oxide and molecules of water concentrations.
O. Paton Electric Welding Institute of NASU, Bozhenko str. 11, 03680, Kyiv, Ukraine. maxnedel@ukr.net.
Maksym
M
Nedielko
University Frères Mentouri, B.P. 325 Route Ain El Bey, 25017, Constantine, Algeria.
Smail
S
Hamamda
Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601, Kyiv, Ukraine.
Olexander
O
Alekseev
Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601, Kyiv, Ukraine.
Vitalii
V
Chornii
Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601, Kyiv, Ukraine.
Mykola
M
Dashevskii
Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601, Kyiv, Ukraine.
Maksym
M
Lazarenko
Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601, Kyiv, Ukraine.
Kostiantyn
K
Kovalov
Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601, Kyiv, Ukraine.
Sergii G
SG
Nedilko
Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601, Kyiv, Ukraine.
Sergii
S
Tkachov
Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601, Kyiv, Ukraine.
Sergiy
S
Revo
Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601, Kyiv, Ukraine.
Vasyl
V
Scherbatskyi
Cellulose; Composite; Luminescence; Micro/nanosize; Morphology; Oxide