Features of Preparation of Sorption-Active
Amino Hydroxy Derivatives
of Polycaproamide–Polyglycidyl Methacrylate Graft Copolymers
T. V. Druzhinina and Yu. A. Kilyushik
Kosygin Moscow State Textile University, Moscow, Russia
Received December 30, 2009
Abstract—Specific features of polymer-analogous transformations of polycaproamide–polyglycidyl
methacrylate graft copolymers under the action of monoethanolamine were revealed, and the influence of the
functionality of aliphatic amines on the process was analyzed.
AND POLYMERIC MATERIALS
ISSN 1070-4272, Russian Journal of Applied Chemistry, 2010, Vol. 83, No. 6, pp. 1049–1053. © Pleiades Publishing, Ltd., 2010.
Original Russian Text © T.V. Druzhinina, Yu.A. Kilyushik, 2010, published in Zhurnal Prikladnoi Khimii, 2010, Vol. 83, No. 6, pp. 996–1000.
Among the most important problems whose
successful solution will determine the possibility of
mitigating the anthropogenic impact on the environ-
ment is the wastewater treatment. As a rule, it is based
on sorption processes [1, 2]. Therefore, the develop-
ment of various types of chemisorption materials, in
particular, of fibrous materials, is a topical problem.
Such materials will expand the application potential of
sorption processes [3, 4].
Fibrous complexing sorbents (complexites) exhibit-
ing high complexing activity occupy an important
place among chemisorption materials [5, 6].
In this study, with the aim to prepare fibrous com-
plexing sorbents of new composition, we examined the
features of synthesis of amino hydroxy derivatives of
polycaproamide graft copolymers. The functional
groups of these materials are capable of donor–
acceptor interaction with heavy metal ions.
The choice of a procedure for preparing fibrous
sorbents by graft polymerization of nonionic monomers
followed by polymer-analogous transformation of the
grafted chains is governed by its advantages in
implementation . Our experiments were performed
with a polycaproamide fiber modified by graft poly-
merization of glycidyl methacrylate. The fiber had the
following composition, %: grafted polyglycidyl metha-
crylate (PGMA) 37, polycaproamide (PCA) incur-
porated in the graft polycaproamide–polyglycidyl
methacrylate graft copolymer (PCA–PGMA) 60, and
unchanged PCA 3. The modified PCA fiber was
obtained with a pilot installation with forced circula-
tion of the reaction emulsion containing glycidyl
methacrylate, nonionic surfactant, and components of
the redox system through a bed of fiber densely packed
in the perforated cylinder of the apparatus. As an ionic
modifier we used commercial monoethanolamine
(MEA) [TU (Technical Specification) 2632-094-
44493179–04] exhibiting high complexing ability.
Polymer-analogous transformations of oxirane
groups of the graft copolymer were performed in a
flask equipped with a reflux condenser and charged
with a weighed portion of the fiber and with a solution
of monoethanolamine in water or in an aprotic solvent
of the required concentration. The flask was placed in
a liquid thermostat in which the temperature was
maintained with an accuracy of ±0.5°C. The reaction
products were washed with distilled water to neutral
reaction and analyzed for the content of amine nitrogen
A study of the reaction of MEA with functionally
active groups of the modified polyamide fiber involved
studies of the kinetics and concentration and tem-
perature dependences of the heterophase macro-
molecular reaction in graft copolymer chains.
As seen from Table 1, the initial reaction rates
calculated from the linear portions of the N