Russian Journal of Applied Chemistry, 2013, Vol. 86, No. 4, pp. 558−563.
Pleiades Publishing, Ltd., 2013.
Original Russian Text © L.I. Kutsenko, Yu.G. Santuryan, L.M. Kalyuzhnaya, I.V. Gofman, I.V. Abalov, A.M. Bochek, E.F. Panarin, 2013, published in Zhurnal
Prikladnoi Khimii, 2013, Vol. 86, No. 4, pp.598−603.
AND POLYMERIC MATERIALS
Properties of Solutions and Films of Blends
of Ethyl Cellulose with Polyvinylpyrrolidone and Poviargol
L. I. Kutsenko, Yu. G. Santuryan, L. M. Kalyuzhnaya, I. V. Gofman,
I. V. Abalov, A. M. Bochek, and E. F. Panarin
Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg, Russia;
Received March 13, 2013
Abstract—Viscosity properties of dilute and concentrated ethanol solutions of blends of ethyl cellulose with poly-
vinylpyrrolidone and Poviargol bactericidal formulation (silver metal nanoparticles stabilized with polyvinylpyr-
rolidone) were studied. The physicomechanical and thermomechanical properties of ﬁ lms prepared from solutions
of the polymer blends were determined. Experiments on solvent vapor sorption showed that ethyl cellulose is
incompatible with polyvinylpyrrolidone and Poviargol in the solid state in the entire composition range examined.
Studies of intermolecular interactions in blends of
polymers differing in the chemical structure and equilib-
rium rigidity of macrochains and dissolved in a common
solvent are topical, because these interactions determine
the viscosity properties of solutions, their thermodynamic
stability, and properties of composite ﬁ lms prepared from
Much attention is paid today to studies of polymer
blends based on polysaccharides and hydrophilic vinyl
polymers [1, 2], which are harmless for humans and
In this work, we studied the viscosity properties of
dilute and concentrated ethanol solutions of blends of
ethyl cellulose (EC) with polyvinylpyrrolidone (PVP)
and with Poviargol antiseptic (PVAG) containing PVP-
stabilized silver metal nanoparticles. We also evaluated
the compatibility of the polymers in the solid state and
the physicomechanical and thermomechanical properties
of composite ﬁ lms prepared from these solutions.
Ethyl cellulose is a cellulose ether prepared by the
reaction of cellulose with ethyl chloride . It is widely
used in many branches of industry, in particular, in food
and pharmaceutical industries as packaging material .
Polyvinylpyrrolidone is used in medicine in production
of drugs and agents of prolonged action . Poivargol
is a polymeric composite of silver metal nanoparticles
stabilized with PVP . It exhibits a wide spectrum of
antimicrobial action, and also anti-inﬂ ammatory, repara-
tive, and immunostimulating activity . Introduction of
PVP and PVAG into EC matrix allows preparation of ﬁ lm
materials for medical purpose; study of their deformation
and strength characteristics is necessary for evaluating
the performance of such ﬁ lms.
In our experiments we used commercial EC samples
with the degree of substitution (DS) of 2.5 and degree of
polymerization of 200 (molecular weight MW 46.4 kDa),
PVP with MW 12.6 kDa, and Poviargol (Tekhnolog Spe-
cial Designing and Technological Bureau, St. Petersburg)
containing 8 wt % silver. 96% ethanol was used as com-
mon solvent. Solutions of EC–PVP and EC–Poviargol
blends were prepared by blending solutions of the initial
polymers of equal concentrations at the component weight
ratios of 0.7 : 0.3, 0.5 : 0.5, and 0.3 : 0.7.
The viscosity of dilute solutions was measured with an