Russian Journal of Applied Chemistry, 2012, Vol. 85, No. 2, pp. 272−276.
Pleiades Publishing, Ltd., 2012.
Original Russian Text © Yu.V. Bondar’, D.H. Han, 2012, published in Zhurnal Prikladnoi Khimii, 2012, Vol. 85, No. 2, pp. 283−287.
AND POLYMERIC MATERIALS
Speciﬁ c Features of Amination of Poly(Glycidyl Methacrylate)
Chains Grafted onto Polypropylene Fibers
Yu. V. Bondar’
and D. H. Han
Institute of Environmental Geochemistry, Kiev, Ukraine
Yeungnam University, Gyeongsan, Republic of Korea
Received August 5, 2011
Abstract—Amination with diethylenetriamine of poly(glycidyl methacrylate) chains grafted onto polypropylene
ﬁ bers by the radiation-chemical procedure was studied.
Adsorbents containing amino groups show high se-
lectivity and performance in preconcentration and selec-
tive recovery of heavy metal ions from multicomponent
solutions [1–9]. A widely used route to amine-containing
adsorbents is amination of poly(glycidyl methacrylate)
(PGMA) as a component of polymeric matrix, or of PGMA
chains grafted onto the surface of polymer ﬁ bers of various
chemical structures. The epoxy groups of glycidyl methac-
rylate (GMA) are readily opened in reactions with amines
or polyamines, with incorporation of amino groups.
Speciﬁ c features of amination of PGMA-based micro-
granules in reactions with various aliphatic polyamines
(ethylenediamine, EDA; diethylenetriamine, DETA;
triethylenetetramine, TETA; tetraethylenepentamine,
TEPA) were considered in several papers [1–3]. A de-
crease in the density of the incorporated polyamine groups
in the order EDA > DETA > TETA > TEPA was noted
and was attributed to the steric effect.
Experiments on amination of PGMA chains grafted
onto the surface of polymer ﬁ bers by reactions of these
chains with aliphatic polyamines also showed that the
density of the incorporated amino groups decreased
with an increase in the length of the reacting polyamine
molecule [4–8]. In addition, it was found that the degree
of conversion of epoxy rings decreased with an increase
in the degree of GMA graft polymerization [4–8]. These
facts were also attributed to the effect of steric factors .
Thus, PGMA amination by opening of epoxy rings in
reactions with amines and polyamines is characterized by
a steric effect inﬂ uencing the density of the incorporated
amino groups and the conversion of epoxy groups.
However, this matter has been studied insufﬁ ciently. In
particular, in amination of grafted PGMA chains, the
steric effect associated with an increase in the degree
of GMA graft polymerization practically has not been
This study deals with amination with diethylenetri-
amine of PGMA chains grafted onto polypropylene ﬁ bers
by a radiation-chemical procedure. To reveal the speciﬁ c
features of amination, we studied in detail the variation
of both the density of the incorporated amino groups
and the degree of epoxy ring conversion in relation to
the degree of GMA graft polymerization and analyzed
the localization of the incorporated amino groups in the
grafted PGMA layer.
The results we obtained allowed us to elucidate the
origin of the steric effect in samples with high degrees of
GMA graft polymerization and to give recommendations
on the choice of optimal conditions for preparing
chemically active polypropylene fibers with DETA