Synthesis of polyacrylate/polyethylene glycol interpenetrating network hydrogel and its sorption for Fe3+ ion
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A simple two-step aqueous polymerization method was introduced to synthesize polyacrylate/polyethylene glycol (PAC/PEG) interpenetrating network (IPN) hydrogel. The sorption behaviors and mechanism were studied by the sorption of PAC/PEG IPN hydrogel to Fe3+ ion from aqueous solution. The experimental results revealed that the adsoption amount of Fe3+ ion using swollen hydrogels was much higher than that using the dried composite, they were 75.69 mg/g and 14.25 mg/g, respectively. The parameters, such as neutralization degree, acrylic acid (AA) dosages and temperature, on the sorption amount of PAC/PEG IPN hydrogel were detailedly investigated.
KeywordsAcrylic Acid Fickian Diffusion Hydrogel Sample FeCl3 Solution Hydrogel Surface
The authors acknowledge the joint support of the National High Technology Research and Development Program of China (863 Program) (No. SQ2008AA03Z2470974), the National Natural Science Foundation of China (Nos. 50572030, 50842027), and the Key Scientific Technology Program of Fujian, China (Nos. 2005HZ01–4 and 2007HZ0001–3).