Poster presentation
275
SYNTHESIS AND CHARACTERIZATION OF SODIUM-
CARBOXYMETHYLCELLULOSE SOLUTION CONTAINING
ZINC OXIDE NANOPARTICLES FOR THE CREATION OF
BIOMATERIALS
M.M. Mirkholisov, K. E. Yunusov,
A.A. Sarymsakov
Institute of Polymer Chemistry and Physics, Uzbekistan Academy of Sciences,
100128, Tashkent, str A. Qodiriy, 7 “
b
”,
е-mail: polymer@academy.uz
Creation the of special biomaterials based on cellulose-containing zinc and its oxides
with antibacterial properties at cleaning the atmospheric air from toxic viruses and
bacteria is one of the serious problems of pharmaceutical and chemical scientists [1].
Zinc oxide nanoparticles (ZnONP) is considered to be non-toxic to humans and has a
high
antibacterial effect, and is also important in restoring the immune system [2].
The purpose of this work is to synthesize ZnONPs in the sodium –
carboxymethylcellulose (Na-CMC) solutions and study physicochemical characteristics
by UV-spectroscopic method in order to determine the size and shape of nanoparticles.
An aqueous solution with a concentration of 1% was prepared from purified Na-
CMC with a degree of substitution (DS)-0.85 and a degree of polymerization (DP)-
1050. For the synthesis of ZnONPs were used 0.1 M aqueous solution of zinc nitrate
(Zn(NO
3
)
2
).
After adding the amount of Zn(NO
3
)
2
to the solution of Na-CMC the Zn
2+
ions react
with carboxymethyl (CH
2
COO
-
) groups
of Na-CMC forming Zn
2+
CMC hydrogel with
ionic coordination bonds. By adding sodium hydroxide, the ions of zinc were restored to
a metallic state by the formation of ZnONPs. In order to determine the size and shape of
ZnONPs which are synthesized
in the Na-CMC matrix, were carried out UV-
spectroscopic studies.
The maximum absorption spectra of the synthesized ZnO/CMC solution spectra were
observed at the λ
max
-370 nm wavelength, which characterized the formation of spherical
ZnONPs with sizes 10-80 nm in the solution.
In the ZnO/CMC film obtained film solution was
observed by atomic force
microscopic investigation ZnONPs with sizes 5-68 nm.
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