1070-4272/03/7608-1292 $25.00 C 2003 MAIK [Nauka/Interperiodica]
Russian Journal of Applied Chemistry, Vol. 76, No. 8, 2003, pp. 1292!1295. Translated from Zhurnal Prikladnoi Khimii, Vol. 76, No. 8, 2003,
Original Russian Text Copyright + 2003 by Leplyanin, Battalov, Murinov.
AND POLYMERIC MATERIALS
Properties of Poly(methyl Methacrylate) Containing
Metal Sulfoxide Complexes
G. V. Leplyanin, E. M. Battalov, and Yu. I. Murinov
Institute of Organic Chemistry, Ufa Scientific Center, Russian Academy of Sciences, Ufa, Bashkortostan, Russia
Received January 28, 2003
Abstract-The uniformity, light fastness, heat resistance, radiation hardness, and antistatic properties of
poly(methylmethacrylate) prepared in the presence of metal sulfoxide complexes were studied.
Synthesis of polymers, in particular poly(methyl
methacrylate) (PMMA) containing metal compounds
is of both scientific and practical interest. Introduction
of metals substantially broadens the field of poly-
mer application. Kinetic features of MMA polymeri-
zation in the presence of sulfoxides and their metal
complexes, oxychlorides, and mineral acids were
well understood . At the same time, properties of
poly(methyl methacrylate) containing various metal
sulfoxide complexes have been studied insufficiently.
To remove stabilizer, methyl methacrylate was
shaken with 10% KOH, washed with water to neutral
reaction, dried over calcined calcium chloride, and
distilled twice in a vacuum . Poly(methyl methac-
rylate was prepared from a fraction with bp 42oC
(100 mm Hg), d
= 0.936, and n
Azobis(isobutyronitrile) (AIBD) was recrystallized
repeatedly from methanol and dried in a vacuum at
room temperature to constant weight (mp 103oC, dec.).
The initiator was stored at 5oC.
were recrystallized from hexane. Their
purity was monitored by IR spectroscopy and elemen-
tal analysis for sulfoxide sulfur (potentiometric titra-
tion). The content of the main compound was 98.53
99%. Physicochemical properties of purified sulfox-
ides agreed well with published data. Petroleum sulf-
oxides (PSOs) are a mixture of mono-, bi-, and tri-
cyclic, mainly saturated, sulfoxides.
The concentration of paramagnetic centers was de-
termined on an RE-1301 radiospectrometer at liquid
nitrogen temperature. The light fastness was esti-
mated by a change in the color intensity of organic
glass exposed for 20 h to the light of a PRK-2 lamp at
a distance of 14 cm. Antistatic properties were de-
Fig. 1. Debye patterns of organic glass prepared (a) without additives and (b, c) in the presence of 1 0 10
Sulfoxides and their metal complexes were prepared at the laboratory of Physical Chemistry, Institute of Organic Chemistry, Ufa
Scientific Center, Russian Academy of Sciences.