Premium
Study on the synthesis of a macroporous ethylacrylate‐divinylbenzene copolymer, its conversion into a bi‐functional cation exchange resin and applications for extraction of toxic heavy metals from wastewater
Author(s) -
Ali Syed Wasim,
Waqar Farhat,
Malik Muhammad Arif,
Yasin Tariq,
Muhammad Bashir
Publication year - 2013
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.38940
Subject(s) - chemistry , sulfuric acid , nuclear chemistry , hydrolysis , divinylbenzene , suspension polymerization , ethylene glycol , aqueous solution , copolymer , organic chemistry , styrene , polymer
Macroporus ethylacrylate‐divinylbenzene copolymers were synthesized by suspension polymerization using diethyl phthalate and n ‐heptane as diluent. A hydrolysis study revealed that conversion of esters into carboxylic acid groups was dependent on three factors: (1) crosslinkage: increases with a decrease in crosslinkage, (2) reagent: sulfuric acid>aqueous NaOH>NaOH in a 1 : 1 water to ethylene glycol, and (3) pore volume (PV): highest when PV was ∼ 0.7 mL g −1 . Sulfuric acid hydrolyzed ester to COOH and introduced SO 3 H on phenyl rings, thus producing a bi‐functional resin. The functional groups were verified by IR spectroscopy and quantified by acid–base titration. The bi‐functional resin's capacity for toxic heavy metals in water samples was 12.51, 10.43, 9.43, 13.21, and 11.12 mg g −1 for Cu, Cd, Ni, Pb, and Zn, respectively and the recoveries exceeded >95% in range of pH 2–8, showing that it is suitable for water purification. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013