Russian Journal of Applied Chemistry, 2011, Vol. 84, No. 7, pp. 1257−1260.
Pleiades Publishing, Ltd., 2011.
Original Russian Text © M.L. Eritsyan, Zh.B. Barsegyanb, R.A. Karamyan, Sh.M. Manukyan, T.D. Karapetyan, K.A. Martirosyan, 2011, published
in Zhurnal Prikladnoi Khimii, 2011, Vol. 84, No. 7, pp. 1187−1190.
AND POLYMERIC MATERIALS
Copolymerization of Acrylic Acid with New Acrylamide
M. L. Eritsyan
, Zh. B. Barsegyan
, R. A. Karamyan
, Sh. M. Manukyan
T. D. Karapetyan
, and K. A. Martirosyan
Abovyan Armenian State Pedagogical University, Yerevan, Armenia
Geratsi Yerevan State Medical University, Yerevan, Armenia
Received May 18, 2010
Abstract—Radical copolymerization of acrylic acid with acrylamide derivatives was studied. The cooplymerization
constants were determined, and their dependence on the structure of the substituent in the acrylamide molecule
and on the molecular weight of the polymers prepared was examined.
Copolymers of acrylic acid (AA) with acrylamide
derivatives have been a subject of numerous papers, of
which we particularly mention applied studies [1–3].
The properties of three-dimensionally cross-linked
copolymer of AA with acrylamide (AM) as a base for
water-absorbing polymer–mineral composites supplying
water to plants in the vegetation period were examined
in [4, 5]. Some modiﬁ cations of AA–AM copolymer and
composites based on them were recommended for coat-
ing bottoms of water reservoirs and channels to prevent
water ﬁ ltration .
Taking into account the practical significance of
AA–AM copolymers, we prepared in this study new AM
derivatives and their copolymers with AA (M
show promise for speciﬁ c applications.
We prepared the following acrylamide derivatives
): N-morpholinomethylacrylamide (I)
CH C NH
its hydrochloride (II)
CH C NH
and sodium N-sulfonatomethylacrylamide (III)
CH C NH
The conditions of the copolymerization of M
the above monomers M
are given in Table 1. As can be
seen, the copolymer compositions and molecular weights
depend on substituents in the M
molecule. The functional
), compared to –CH
), appreciably restricts the growth
of the molecular weight of the copolymers. This may be
due to participation of the lone electron pair of the N atom
in the chain transfer with the formation of ion pairs con-
taining unpaired electrons, followed by recombination of
the nitrogen atom with the propagating center, resulting
in the chain termination (see the scheme).
This effect with various radicals was noted in .
From the data given in Table 1, using the Fineman–