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Polymeric superabsorbing composite prepared using a glow‐discharge electrolysis plasma for the removal of divalent heavy metal ions from aqueous solutions and its swelling properties
Author(s) -
Wang Xinggang,
Gao Jinzhang,
Yang Wu
Publication year - 2012
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.23170
Subject(s) - aqueous solution , adsorption , langmuir adsorption model , materials science , nuclear chemistry , fourier transform infrared spectroscopy , polymer chemistry , thermogravimetric analysis , distilled water , acrylic acid , sulfonic acid , metal ions in aqueous solution , chemical engineering , chemistry , metal , copolymer , composite material , organic chemistry , chromatography , polymer , metallurgy , engineering
A novel polymeric superabsorbing composite was prepared using the graft copolymerization of acrylic acid (AANa, 70% neutralization with NaOH) and 2‐acrylamido‐2‐methyl propane sulfonic acid (AMPS) onto the hydroxyethyl cellulose (HEC) [HEC‐ g ‐P(AANa‐ co ‐AMPS)], which was initiated by means of a glow‐discharge electrolysis plasma rather than a chemical initiator. The composite material was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermal gravimetric analysis (TGA). We obtained absorbencies of 2490 g g −1 for distilled water and of 109 g g −1 for 0.9 wt% NaCl solution. Results show that the maximum adsorption capacities for Ni(II), Cu(II), Cd(II), Pb(II), and Hg(II) from aqueous solution were 974.84, 975.43, 1535.52, 1970.47, and 1879.53 mg g −1 , respectively. The adsorption isotherm followed the Langmuir isotherm model very well. Adsorption kinetics results indicate that the fast adsorption rate followed the pseudo‐second‐order kinetics equations. POLYM. ENG. SCI., 2012. © 2012 Society of Plastics Engineers