A. A. Luginina, S. V. Kuznetsov, V. V. Voronov, A. D. Yapryntsev, V. K. Ivanov, D. I. Petukhov, A. A. Lyapin, A. S. Ermakov, D. V. Pominova, E. V. Chernova, A. A. Pynenkov, K. N. Nishchev, P. P. Fedorov, “Hydrophobization of up-conversion luminescent films based on nanocellulose/MF<nobr>$_2$</nobr>:HO particles (M = Sr, Ca) by acrylic resin”, Nanosystems: Physics, Chemistry, Mathematics, 2019, Volume 10, Issue 5,Pages <nobr>585

This article is cited in 2 papers

CHEMISTRY AND MATERIAL SCIENCE

Hydrophobization of up-conversion luminescent films based on nanocellulose/MF$_2$:HO particles (M = Sr, Ca) by acrylic resin

A. A. Luginina^a, S. V. Kuznetsov^a, V. V. Voronov^a, A. D. Yapryntsev^b, V. K. Ivanov^b, D. I. Petukhov^c, A. A. Lyapin^d, A. S. Ermakov^d, D. V. Pominova^a, E. V. Chernova^a, A. A. Pynenkov^d, K. N. Nishchev^d, P. P. Fedorov^a

^a Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov str. 38, Moscow, 119991, Russia
^b Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninskii prosp. 31, Moscow, 119991, Russia
^c Lomonosov Moscow State University, Chemical department, Leninskie Gory str. 1, Moscow, 119991, Russia
^d Ogarev Mordovia State University, Bolshevistskaya str. 68, Saransk, 430005, Russia

Abstract: Luminescent hydrophobic composite films based on nanocrystalline (CNC) and nanofibrillated (CNF) cellulose matrix with up-conversion MF$_2$:Ho (M = Ca, Sr) particles and acrylic resin (ACR) as a coating have been synthesized. Flexible, translucent composite films were obtained by molding from the CNC/CNF suspensions with up-conversion particles. ACR coating was applied to the composite film by spraying. Studies have shown that ACR coating with a layer thickness of 7–10 $\mu$m provides hydrophobic properties for the films, increasing the water contact angle up to 100$\pm$2$^\circ$ with a simultaneous improvement in the luminescent properties. Transparency of CNC/CNF/MF$_2$:Ho-ACR films in the visible and near IR region improves by 20–25% without compromising the flexibility and thermal stability. The manufactured water-resistant composite films can be utilized as potential photonics materials, in particular for visualization of near-IR laser radiation and luminescent labels.

Keywords: cellulose nanocrystals, cellulose nanofibrils, nanocomposites, hydrophobicity, acrylic resins, SrF$_2$:HO, CaF$_2$:HO, up-conversion luminescence films.

Received: 01.10.2019
Revised: 04.10.2019

Language: English

DOI: 10.17586/2220-8054-2019-10-5-585-598