【摘 要】
：
In this study,poly(vinyl phosphonic acid-co-glycidyl methacrylate-co-divinyl benzene)(PVGD) and poly(vinyl phosphonic acid-co-glycidyl methacrylate-co-divinyl benzene)(IPVGD) containing iminodiacetic
【机 构】
：
Dept.of Applied Chemistry and Biological Engineering,Chungnam National University,99 Daehack-Ro,Yuse
【出 处】
：
第七届国际分离科学与技术会议(Proceedings of the 7th International Conferen
论文部分内容阅读
In this study,poly(vinyl phosphonic acid-co-glycidyl methacrylate-co-divinyl benzene)(PVGD) and poly(vinyl phosphonic acid-co-glycidyl methacrylate-co-divinyl benzene)(IPVGD) containing iminodiacetic acid group which was indium ion silectivity,were synthesized by suspension polymerization,and their indium adsorption properties were investigated [10-13].The synthesized PVGD and IPVGD resins were characterized by Fourier transform infrared (FT-IR) spectroscopy and scanning electron microscopy(SEM),energy-dispersive X-ray spectroscopy(EDS) and mercury porosimeter.The ion-exchange capacity,water uptake and their indium adsorption properties were investigated [14,15].The ion-exchange capacities of PVGD and IPVGD were 1.2~4.5 meq/g and 2.5~6.4 meq/g,respectively.The water uptakes were decreased with increasing the divinyl benzene(DVB) contents.Their values were 25~40 % and 20~35 %,respectively.The optimum indium adsorption from pure indium solution and artificial ITO solution by PVGD and IPVGD cation exchange resins were 2.3,3.5 meq/g.The indium adsorption cacpacities of IPVGD were higher than those of PVGD.The indium ion adsorption selectivity in the artificial ITO solution by PVGD and IPVGD were very excellent and other ions were few adsorbed.In addition,the maximum adsorption predicted by the Langmuir adsorption isotherm model was greatest at a 0.5 molar ratio of VPA.
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