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Poly( N ‐vinylpyrrolidone‐ co ‐2‐acrylamido‐2‐methylpropanesulfonate sodium): Synthesis, characterization, and its potential application for the removal of metal ions from aqueous solution
Author(s) -
Valle Hernán,
Sánchez Julio,
Rivas Bernabé L.
Publication year - 2015
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.41272
Subject(s) - comonomer , aqueous solution , copolymer , metal ions in aqueous solution , polymer chemistry , chemistry , nuclear chemistry , polymer , metal , materials science , organic chemistry
In the current study, poly( N ‐vinylpyrrolidone‐ co ‐2‐acrylamido‐2‐methylpropanesulfonate sodium), poly(VP‐ co ‐AMPS), was prepared and used for the removal of Cu 2+ , Cd 2+ , and Ni 2+ ions via a polymer‐enhanced ultrafiltration (PEUF) technique. The copolymer was synthesized by radical polymerization in an aqueous medium with a comonomer feed composition of 50:50 mol %. The molecular structure of the copolymer was elucidated by ATR‐FTIR and 1 H NMR spectroscopy, and the average molecular weight was obtained by GPC. The copolymer composition was determined to be 0.42 for VP and 0.58 for AMPS by 1 H NMR spectroscopy. The copolymer and homopolymers exhibited different retention properties for the metal ions. PAMPS exhibited a high retention capacity for all of the metal ions at both pH values studied. PVP exhibited selectivity for nickel ions. Poly(VP‐ co ‐AMPS) exhibited a lower retention capacity compared to PAMPS. However, for poly(VP‐ co ‐AMPS), selectivity for nickel ions was observed, and the retention of copper and cadmium ions increased compared to PVP. The homopolymer mixture containing PAMPS and PVP was inefficient for the retention of the studied metal ions. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 41272.