1070-4272/03/7602-0284 $25.00 C 2003 MAIK [Nauka/Interperiodica]
Russian Journal of Applied Chemistry, Vol. 76, No. 2, 2003, pp. 284!288. Translated from Zhurnal Prikladnoi Khimii, Vol. 76, No. 2, 2003,
Original Russian Text Copyright + 2003 by Kuznetsova, Kabanova, Lazarev, Grishin.
AND POLYMERIC MATERIALS
Structure and Properties of Zinc-containing Copolymers
Based on (Meth)Acrylate Monomers
N. V. Kuznetsova, L. V. Kabanova, M. A. Lazarev, and D. F. Grishin
Research Institute of Chemistry, Lobachevsky State University, Nizhni Novgorod, Russia
Received June 13, 2002
Abstract-The kinetic parameters of radical emulsion copolymerization of zinc-containing copolymers with
esters of acrylic and methacrylic acids were studied. The effective relative activities of the monomers were
calculated from experimental data and the properties of the metal-containing copolymers were assessed as
influenced by the structure of the organic monomers.
Thanks to their biocidal, thermal, and physico-
mechanical properties, zinc-containing polymers are of
much interest for preparing special-purpose materials
; such polymers can find application as polymer
materials with wide biocidal spectrum. Zinc-contain-
ing copolymers based on acrylates and methacrylates
exhibit enhanced heat resistance and high adhesion to
various materials (metal, wood, concrete, etc.), which
allows their use for preparing heat-resistant coatings.
It has been found  that physicomechanical,
thermal, and biological properties of zinc-containing
polymers and colloidal-chemical characteristics of
their latexes are determined by the ligand environment
of the zinc atom and by its concentration in the initial
monomeric mixture and in the resulting copolymer.
Moreover, synthesis of polymers from zinc-con-
taining monomers is of particular interest because
they involve metal atoms able to interact both with
the monomer and with the growing macroradical.
Similarly to metal halides (Lewis acids) [5, 6], or-
ganometallic monomers can directly affect the ele-
mentary stages of macromolecule synthesis, including
polymeric chain growth.
In this study, we analyzed the reactivity of zinc
methacrylate acetate (ZMA) in reactions of emulsion
polymerization with esters of acrylic and methacrylic
Zinc methacrylate acetate was prepared by the
known procedure . Latexes of ZMA copolymers
with methyl methacrylate (MMA), ethyl methacrylate
(EMA), butyl methacrylate (BMA), and butyl acrylate
(BA) were prepared by emulsion polymerization .
The size of the latex particles was determined by
turbidimetry . To prepare latex films, a required
amount of latex was cast on a Teflon plate and dried
in air for 5 days at 20 + 2oC.
The content of zinc-containing polymers in the sol3
gel fraction were determined by extraction (in the
course of 1 month) in a Soxhlet apparatus, using or-
ganic solvents with different dielectric constants .
The molecular weight of the internodal chain sec-
), characterizing the degree of polymer cross-
linking, was determined by the Flory3Rener meth-
The effective relative activities of monomers
) were evaluated by the Fineman3Ross
We studied the features of emulsion polymerization
of ZMA with monomers of the methacrylate (MMA,
EMA, BMA) and acrylate (BA) series. It was found
that a stable latex is formed in a wide concentration
range only in copolymerization of ZMA with BMA
(Table 1). No zinc-containing copolymer is formed in
the reactions of ZMA with MMA and EMA. It was
demonstrated that, under the conditions studied, homo-
polymerization of MMA and EMA occurs in relatively
low yields (38.3 and 61.3%, respectively); the reaction
mixture separates into two phases and no stable latex
is formed. Our experimental results are in good agree-
ment with data on emulsion homopolymerization of