Investigation of Swelling/Sorption Characteristics of Highly Swollen AAm/AMPS Hydrogels and Semi IPNs with PEG as Biopotential Sorbent — Oak Academic Publishing
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Investigation of Swelling/Sorption Characteristics of Highly Swollen AAm/AMPS Hydrogels and Semi IPNs with PEG as Biopotential Sorbent
Adnan Menderes University, Fen-Edebiyat Faculty, Department of Chemistry, TR-09010, Aydin, Turkey
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Adnan Menderes University, Fen-Edebiyat Faculty, Department of Chemistry, TR-09010, Aydin, Turkey
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Adnan Menderes University, Fen-Edebiyat Faculty, Department of Chemistry, TR-09010, Aydin, Turkey
1 Adnan Menderes University, Fen-Edebiyat Faculty, Department of Chemistry, TR-09010, Aydin, Turkey
2 Adnan Menderes University, Fen-Edebiyat Faculty, Department of Chemistry, TR-09010, Aydin, Turkey
3 Adnan Menderes University, Fen-Edebiyat Faculty, Department of Chemistry, TR-09010, Aydin, Turkey
The aim of this study was to investigate the equilibrium swelling and sorption properties of chemically crosslinked copolymeric hydrogels as biopotential sorbent consisting of acrylamide (AAm) and 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS). Semi-interpenetrating polymer network (semi IPNs) hydrogel, composed of AAm with AMPS as co-monomer, with poly (ethylene glycol) (PEG) and a multifunctional crosslinker such as trimethylolpropane triacrylate (TMPTA) was prepared. AAm/AMPS hydrogels and AAm/AMPS/PEG semi IPNs were synthesized by free radical solution polymerization by using ammonium persulphate (APS)/N,N,N’,N’-tetramethylethylenediamine (TEMED) as redox initiating pair. Swelling experiments were performed in water, 0.01 M and 0.03 M aqueous urea solutions at 25oC, gravimetrically. The hydrogels showed enormous swelling in aqueous urea/water medium and displayed swelling characteristics that were highly depended on the chemical composition of the hydrogels. FTIR spectroscopy was used to identify the presence of different repeating units in the semi IPNs. Some swelling and diffusion characteristics were calculated for different semi IPNs and hydrogels prepared under various formulations. For sorption of cationic dye, Lauths violet into the hydrogels was studied by batch sorption technique at 25oC. Dye removal capacity, adsorption percentage and partition coefficient of the hydrogels was investigated. Swelling and dye sorption properties of AAm/AMPS hydrogels and AAm/AMPS/PEG semi IPNs were investigated as a function of chemical composition of the hydrogels.
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