Polymeric hydrogels obtained using a redox initiator: Application in Cu(II) ions removal from aqueous solutions | Zendy

MoránQuiroz José Luis | Zendy; OrozcoGuareño Eulogio | Zendy; Manríquez Ricardo | Zendy; CarbajalArízaga Gregorio G. | Zendy; de la Cruz Wencel | Zendy; GomezSalazar Sergio | Zendy

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Polymeric hydrogels obtained using a redox initiator: Application in Cu(II) ions removal from aqueous solutions

Author(s) -

MoránQuiroz José Luis,

OrozcoGuareño Eulogio,

Manríquez Ricardo,

CarbajalArízaga Gregorio G.,

de la Cruz Wencel,

GomezSalazar Sergio

Publication year - 2014

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.39933

Subject(s) - self healing hydrogels , aqueous solution , chemistry , polymer chemistry , ethylene glycol dimethacrylate , ammonium persulfate , polymerization , adsorption , radical polymerization , acrylic acid , potassium persulfate , langmuir adsorption model , nuclear chemistry , fourier transform infrared spectroscopy , ethylene glycol , chemical engineering , organic chemistry , polymer , monomer , methacrylic acid , engineering

Poly(acrylic acid‐ co ‐acrylamide) hydrogels were prepared via free‐radical solution polymerization, crosslinked with ethylene‐glycol‐dimethacrylate, potassium persulfate/ammonium bisulfite as the initiator, and applied in the removal of Cu(II) ions from aqueous solutions. Molar ratios of acrylamide/acrylic acid moieties and the amount of crosslinking agent were varied to determine the swelling capacities of hydrogels and maximum metal uptake. Polymerization kinetics was investigated by 1 H‐NMR. Hydrogel physicochemical properties were characterized by nitrogen sorption measurements, elemental analysis, FTIR, and X‐ray photoelectron spectroscopy (XPS). Swelling results indicated that hydrogels were swollen up to 27,500%. Hydrogels showed equilibrium Cu(II) adsorption capacities of 211.7 mg g −1 and fast kinetics (∼20 min). Langmuir isotherm fitted adsorption equilibrium data. FTIR and XPS results helped in elucidating the presence of monodentate copper complex on the surface of hydrogels. A simple synthesis route of hydrogels using the redox initiator suggests the potential application in the removal of toxic metals from aqueous streams. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 39933.

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