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Synthesis and characterization of poly(hydroxamic acid) chelating resin from poly(methyl acrylate)‐grafted sago starch
Author(s) -
Lutfor M. R.,
Sidik S.,
Wan Yunus W. M. Z.,
Rahman M. Z. A.,
Mansor A.,
Haron M. J.
Publication year - 2000
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 - 10.1002/1097-4628(20010214)79:7<1256::aid-app130>3.0.co;2-g
Subject(s) - ceric ammonium nitrate , hydroxamic acid , polymer chemistry , nuclear chemistry , methyl acrylate , chemistry , acrylic acid , chelation , metal ions in aqueous solution , chelating resin , fourier transform infrared spectroscopy , copolymer , copper , acrylate , metal , inorganic chemistry , organic chemistry , polymer , physics , quantum mechanics
A new chelating ion‐exchange resin containing the hydroxamic acid functional group was synthesized from poly(methyl acrylate) (PMA)‐grafted sago starch. The PMA grafted copolymer was obtained by a free‐radical initiating process in which ceric ammonium nitrate was used as an initiator. Conversion of the ester groups of the PMA‐grafted copolymer into hydroxamic acid was carried out by treatment of an ester with hydroxylamine in an alkaline solution. The characterization of the poly(hydroxamic acid) chelating resin was performed by FTIR spectroscopy, TG, and DSC analyses. The hydroxamic acid functional group was identified by infrared spectroscopy. The chelating behavior of the prepared resin toward some metal ions was investigated using a batch technique. The binding capacities of copper, iron, chromium, and nickel were excellent and the copper capacity was maximum (3.46 mmol g −1 ) at pH 6. The rate of exchange of the copper ion was very fast that is, t 1/2 < 5 min. It was also observed that the metal ion‐sorption capacities of the resin were pH‐dependent and its selectivity toward the metal ions used is in the following order: Cu 2+ > Fe 3+ > Cr 3+ > Ni 2+ > Co 2+ > Zn 2+ > Cd 2+ > As 3+ > Pb 2+ . © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 79: 1256–1264, 2001