ISSN 1070-4272, Russian Journal of Applied Chemistry, 2016, Vol. 89, No. 11, pp. 1887−1893. © Pleiades Publishing, Ltd., 2016.
Investigation of Interaction Strategies between Pyrazolone Dyes
and Poly(acrylamide-co-acrylic acid)
Nandkishor B. Shirsath
, Vikas V. Gite
, and Jyotsna S. Meshram
School of Chemical Sciences, North Maharashtra University, Jalgaon, 425 001 India
Department of Chemistry, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur, 440 033 India
Received August 1, 2016
Abstract—The removal of dyes from waste water before their discharge into aquatic ecosystems is of substan-
tial concern. Amongst functional macromolecules, the combination of polymers with dyes is a research ﬁ eld
of enormous potential with regard to high-performance materials. The present study investigates interactions
strategies between P(AM-co-AA) polymer with pyrazolone azo dyes in water as green solvent. These interac-
tions were conﬁ rmed by FTIR spectroscopy, Ultra-visible spectroscopy, EDAX analysis, and FE-SEM analysis.
Polymer P(AM-co-AA) has porous structure in which dyes present in the water get absorb hence it is use to
remove pyrazolone dyes from water.
The text was submitted by the authors in English.
Dyes represent a class of organic compounds, which
could has a pollutant action of aquatic ecosystems.
These compounds originate from efﬂ uents of different
industries, such as textile and leather, production of
pharmaceuticals and cosmetics, printing, food processing,
paper and pulp . Azo dyes are characterized by
presence of one or more azo groups in the molecule 
that form bridges between organic residues, of which at
least one is usually an aromatic nucleus [3, 4]. Several
methods exist for preparing azo compounds, but invent
of azo dyes is always based on the coupling of diazonium
compounds with phenols, arylamine, pyrazolones or other
suitable component to give hydroxyazo or aminoazo or
their tautomeric equivalents [5, 6].
The attractive representatives amongst the large
number of dye categories are triphenylmethane, azo,
anthraquinone, perylene, indigoid, and pyrazone dyes.
Pyrazolone nucleus is a prominent structural moiety and
plays an essential role in biologically active compounds
. Pyrazolone derivatives are of particular signiﬁ cance
in pharmaceutical chemistry due to their abundant
applications as analgesic, antipyretic, anti-inﬂ ammetory,
antifungal, antibacterial and antiproliferative agent [8, 9].
Disperse dyes are a popular class of dyes that are used with
polyester fabrics because of their brilliance, wide range of
hues and excellent fastness, in addition to environmental
and economic reasons [10, 11]. Due to the fact that these
compounds cover a large spectrum of applications, they
are the main focus of this article . A great interest has
been recently directed to polymer for the removal of dyes
from waste water. Polymers are a workable option for
the exiting waste water treatment technologies. Various
polymeric materials have been developed in recent years
for coagulation-ﬂ occulation purpose [13, 14]. Azo dyes
derived from coupling diazonium salts with sulfur and/
or nitrogen heterocyclic compounds are particularly use
in this context . Many patents and papers illustrated
the synthesis and dyeing properties of phenylazopyrazone
disperse dyes .
Nucleophilic substitution reactions of pyrazolone
dyes with poly(acrylamide-co-acrylic acid) [P(AM-co-
AA)] offers great synthetic potential for incorporating
chromophoric groups directly into the polymer backbone
which is formed in one step only [17, 18]. P(AM-co-AA)
is water soluble polymer which is extensively applied,
e.g., in treatment of water, super absorber, coating, and