1070-4272/04/7703-0458C2004 MAIK [Nauka/Interperiodica]
Russian Journal of Applied Chemistry, Vol. 77, No. 3, 2004, pp. 458! 462. Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 3,
2004, pp. 465! 469.
Original Russian Text Copyright + 2004 by Ergozhin, Chalov, Iskakova, Kovrigina.
AND POLYMERIC MATERIALS
Polyfunctional Anion Exchangers Based on Copolymers
of Allyl Glycidyl Ether and Polyamines
E. E. Ergozhin, T. K. Chalov, R. A. Iskakova, and T. V. Kovrigina
Bekturov Institute of Chemical Sciences, Ministry of Education and Science of Kazakhstan Republic,
Received April 16, 2003
Abstract-Polyfunctional anion exchangers were prepared by copolymerization of allyl glycidyl ether with
polyamines in the presence of a promoter. The synthesis conditions were optimized. The composition and
physicochemical features of the resins prepared were studied.
It is known that, in storage, pretreatment, and prac-
tical application of sorbents, their characteristics are
deteriorated. Therefore, development of polymeric
sorbents with stable physicochemical and sorption
characteristics is an urgent problem. In this respect,
allylic resins show much promise. These polymers are
formed by slow radical polymerization of allyl mono-
mers. Their molecular weight is usually low because
of degradation chain transfer to the monomer . This
process is widely used for preparating polymers with
stable physicochemical features [2, 3].
In this work we prepared polyfunctional anion
exchangers by copolymerization of allyl glycidyl ether
(AGE) and polyamines [polyethylenimine (PEI),
poly-2-methyl-5-vinylpyridine (PMVP) in the pres-
ence of initiator (H
)]. The composition, structure,
and acid3base properties of the anion exchangers were
studied by IR and
C NMR spectroscopy and poten-
The AGE3PEA (or PMVP) copolymers were pre-
pared in dimethylformamide (DMFA) at 70380oC.
Before polymerization, a portion of 30% aqueous
hydrogen peroxide was added as initiator into the
reaction mixture. The initially formed gel-like poly-
mer was cured at 803120oC. The solid polymer was
crushed, and the fraction with the granule size of
0.25 mm was separated by sifting [4, 5].
The pretreatment of the polymer and determination
of its physicochemical characteristics were carried out
by common technique .
The IR spectra of polimerization products formed
in the initial, intermediate, and final polymerization
stages were recorded on a Specord M80/M85 spectro-
photometer [KBr pellets (200 mg KBr + 1 mg poly-
merization product), thin film of the product placed
between plates]. The
C NMR spectra of polymeri-
zation products were recorded in dimethyl sulfox-
ide solution on a Mercury-300 NMR spectrometer
(75 MHz) at room temperature.
The potentiometric titration of the anion exchanger
was carried out by contact of its air-dry weighed
samples (0.2030.25 g) with different amounts of
0.1 N aqueous HNO
at the ionic strength (KNO
1 M. After the equilibrium was attained (within 73
10 days), the pH was measured on an EV-74 universal
In order to optimize the conditions for preparing
the polyelectrolytes, their static exchange capacity
(SEC) and swelling (V
) were studied in relation
to the main preparation parameters: AGE : polyamine
ratio, polyamine type, temperature, and prepolymeri-
We found (Table 1) that, with increasing the poly-
amine : AGE weight ratio in the reaction mixture
above unity, both the SEC of anion exchanger (pre-
pared in the presence of H
) for HCl and its swel-
ling decrease. The increase in the H
in the reaction mixture from 0.1 to 0.3% also nega-
tively affects the polyelectrolyte characteristics.
Table 1 shows that the polymer prepared without
has a lower anion-exchange capacity and
higher swelling as compared to the anion exchanger
prepared in the presence of hydrogen peroxide. Thus,
introduction of hydrogen peroxide into the reaction
mixture improves the resin characteristics.