ISSN 1070-4272, Russian Journal of Applied Chemistry, 2016, Vol. 89, No. 9, pp. 1485−1489. © Pleiades Publishing, Ltd., 2016.
Original Russian Text © M.L. Eritsyan, R.A. Karamyan, A.G. Sumbulyan, G.S. Petrosyan, L.N. Eritsyan,
2016, published in Zhurnal Prikladnoi Khimii, 2016,
Vol. 89, No. 9, pp. 1196−1200.
AND POLYMERIC MATERIALS
Polymer-Analogous Transformations of Polyvinyl Alcohol
M. L. Eritsyan
, R. A. Karamyan*
, A. G. Sumbulyan
, G. S. Petrosyan
, and L. N. Eritsyan
Abovyan Armenian State Pedagogical University, ul. Alek Manukyan 13, Yerevan, 0070 Armenia
Heratsi State Medical University, ul. Koryun 2, Yerevan, 0025 Armenia
Received February 25, 2016
Abstract—Modiﬁ cation of polyvinyl alcohol with monomethylolurea and 4,5-dihydroxyimidazolidin-2-one
was performed in a wide temperature interval (40–80°С). Irrespective of the initial conditions, modiﬁ cation with
the monofunctional agent yielded a non-cross-linked polyfunctional product, which was subsequently used for
developing compounds for various purposes. The kinetics of the modiﬁ er grafting to the polymer was studied,
which is important for controlling the process and choosing its optimum conditions.
Polyvinyl alcohol (PVAl) is one of the most widely
used polymers. It is used in diverse branches of industry,
in particular, for producing environmentally clean ﬁ lm
materials for medical purposes, ﬁ lms for packing and
storing various foodstuffs, transparent varnishes for
protecting the surface of devices and structural materials,
adhesive formulations, adhesive tapes, etc.
To enhance the physicomechanical and processing
characteristics of PVAl, it is modiﬁ ed with various in-
organic and organic compounds [1, 2]. In particular, to
enhance the elasticity and the heat and frost resistance of
PVAl, it was modiﬁ ed by polymer-analogous transfor-
mations with anhydrides of dibasic organic acids, poly-
hydric aromatic and aliphatic alcohols, etc.
Here we report the results of PVAl modiﬁ cation
by polymer-analogous transformations using mono-
methylolurea (MU) and 4,5-dihydroxyimidazolidin-2-
We used for modiﬁ cation a 5% aqueous PVAl solu-
tion with the viscosity-average molecular mass of up to
110.0 kDa and residual acetate group content of up to
0.5%. Interaction of the above components was evalu-
ated by variation of the concentration of the modifying
agents with time. The results are given in Table 1.
The IR spectra of PVAl modiﬁ ed with MU contain
absorption bands at 1050, 1130, 1180, 1230, 1250,
1634, and 1695 cm
, belonging to the –C–O–C, –N–,
, and >С groups in the polymer chain.
It is known that MU molecule in acid solution elimi-
nates water molecule with the formation of methyleneurea: