Modification of fiber cellulose materials with amorphized calcium phosphates and copper nanoparticles
O.N. Musskaya, V.K. Krut’ko, A.I. Kulak, E.N. Krutsko
The Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belaru
Abstract: Etherification of the surface of cellulose carriers with phosphoric acid in the presence of urea yielded fiber materials characterized by an increased degree of swelling in aqueous media (by a factor of 1,1-1,5). The copper nanoparticles and their composites with amorphized calcium phosphates were synthesized by the borohydride method using the sodium salt of carboxymethyl cellulose as a stabilizer polymer. The obtained colloidal solutions of copper and their composites with hydroxyapatite are characterized by stability from several days to 2 months. It was found that the modification of cellulose materials (initial and phosphorylated) by the immersion method using aqueous compositions containing amorphized calcium phosphates, copper nanoparticles or composites based on them in the presence of sodium carboxymethylcellulose and ascorbic acid at pH 6 and 11 leads to a decrease in the crystallinity of the polymer carrier. It has been shown by IR spectroscopy that the amorphization of modified fiber cellulose materials is due to a change in the static homogeneity of the system of hydrogen bonds in the polymer structure.
Keywords: cellulose, phosphorylated cellulose, sodium carboxymethylcellulose, amorphized calcium phosphates, hydroxyapatite, copper nanoparticles
- Olga N. Musskaya – Ph. D., Assistant Professor, Leading Researcher, Laboratory of Photochemistry and Electrochemistry, The Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belaru
- Valentina K. Krut’ko – Ph. D., Assistant Professor, Head of the Laboratory of Photochemistry and Electrochemistry, The Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belaru
- Anatoly I. Kulak – D. Sc., Professor, Academician of the National Academy of Sciences of Belarus, The Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belaru
- Evgeny N. Krutsko – Researcher, Laboratory of Photochemistry and Electrochemistry, The Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belaru
Musskaya, O.N. Modification of fiber cellulose materials with amorphized calcium phosphates and copper nanoparticles / O.N. Musskaya, V.K. Krut’ko, A.I. Kulak, E.N. Krutsko // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. — 2022. — I. 14. — P. 811-820. DOI: 10.26456/pcascnn/2022.14.811. (In Russian).
Full article (in Russian): download PDF file
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