Russian Journal of Applied Chemistry, 2013, Vol. 86, No. 4, pp. 611−614.
Pleiades Publishing, Ltd., 2013.
Original Russian Text © N.S. Shaglaeva, V.V. Bayandin, R.G. Sultangareev, G.F. Prozorova, T.I. Vakul’skaya, S.S.Khutsishvili, 2013, published in Zhurnal
Prikladnoi Khimii, 2013, Vol. 86, No. 4, pp. 655−658.
Sulfurization Polyvinyl Chloride
N. S. Shaglaeva
, V. V. Bayandin
, R. G. Sultangareev
, G. F. Prozorova
T. I. Vakul’skaya
, and S. S. Khutsishvili
State Technical University, Irkutsk, Russia
Favorsky Institute of Chemistry, Siberian Branch of Russian Academy of Sciences, Irkutsk, Russia
Received February 19, 2013
Abstract—A sulfurized polymer comprising 57.64% of chemically bound sulfur characterizing by paramagnetism
with the concentration of paramagnetic centers 2 × 10
and g-factor 2.0043 was resulted n the treatment
of industrial polyvinyl chloride by elemental sulfur.
Previously it was found  that polymers in the form
of black powder of a metallic luster, insoluble in water
and organic solvents are produced in a reaction of poly-
vinyl chloride (PVC) with elemental sulfur. The sulfur
content of sulfurized polymers based on PVC depends on
the reaction conditions and ranges from 3.77 to 57.64%.
In this paper we investigated the properties of sulfurized
PVC is emulsion industrial product manufacturing by
“Usoliekhimprom,” which is highly soluble in dimethyl-
formamide, cyclohexanone, 1,2,4-trichlorobenzene and
has the following characteristics: Fikentcher number K
Molecular weight of PVC was determined by vis-
cometer method  (Mark–Houwink–Kuhn equation):
[η] = KМ
where [η] is characteristic viscosity of PVC; K and α are
constants for the system polymer–solvent at temperature
The intrinsic viscosity of the PVC solution was
measured in cyclohexaone by a Ubbelohde viscometer
at 25°C. The value of [η] for PVC under study was
8.4 dL g
. The constants K (2.4 × 10
) and α (0.77) for
the Mark–Houwink–Kuhn equation were taken from .
The molecular weight of PVC (6.3 × 10
) was calculated
by substituting the value of [η], K, and α in the Mark–
Sulfur (commercial product) was used in the reaction
without additinal puriﬁ cation; Puriﬁ cation of 1,2,4-tri-
chlorobenzene, commercial solvent, was carried out by
simple distillation at a temperature of 213.5°C.
IR spectra of copolymers were obtained by
a spectrometer Specord IR-75 in KBr tablets and vaseline
oil, as well as by a spectrometer Bruker IFS-25.
TGA curves of the samples were recorded on
a derivatograph Q-1500 (MOM, Hungary), the maximum
temperature 850°C, the heating rate in air 10°C min
Elemental analysis of the reaction products was
performed by a gas analyzer (ﬁ rm “Thermo Finnigan”).
The EPR spectra of sulfuruzed PVC were recorded in
the range of a magnetic ﬁ eld sweep 100 G by a spectrometer
ELEXSYS E580 (Bruker). The concentration of
paramagnetic centers was calculated by known technique
described in  using diphenylpicrylhydrazyl as a
The EPR spectrum of the original PVC was recorded
in the sweep range of the magnetic ﬁ eld 3000 G by
a spectrometer SEX-2547 (Radiopan, Poland).