Preparation of poly(GMA-co-PEGDA) microbeads modified with iminodiacetic acid and their indium adsorption properties
| Autor: | Taek Sung Hwang, Chi Won Hwang, Noh-Seok Kwak |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Glycidyl methacrylate
Materials science Iminodiacetic acid General Chemical Engineering Langmuir adsorption model General Chemistry Industrial and Manufacturing Engineering chemistry.chemical_compound symbols.namesake Adsorption chemistry Polymer chemistry symbols Environmental Chemistry Freundlich equation Suspension polymerization Fourier transform infrared spectroscopy Ethylene glycol Nuclear chemistry |
| Zdroj: | Chemical Engineering Journal. 226:79-86 |
| ISSN: | 1385-8947 |
| DOI: | 10.1016/j.cej.2013.04.041 |
| Popis: | Poly(glycidyl methacrylate- co -poly(ethylene glycol) diacrylate) (poly(GMA- co -PEGDA)) microbeads were synthesized by suspension polymerization and modified with iminodiacetic acid. The structures and morphologies of the microbeads were confirmed by Fourier transform infrared (FTIR) spectroscopy and scanning electron microscope (SEM). Bands at 1250 cm −1 , 912 cm −1 and 765 cm −1 resulted from symmetric stretching of the epoxy ring, asymmetric ring stretching of the C C bond and a 12 micron band, respectively. The synthetic yields, ion-exchange capacities and water uptake were investigated. The maximum adsorption predicted by the Langmuir adsorption isotherm and Freundlich adsorption model and poly(GMA- co -PEGDA) modified with IDA is considered to be adsorb into a mono-layer. The thermodynamic parameters (Δ G °, Δ H ° and Δ S °) of the microbeads dependent adsorption isotherms and indicate that the adsorption was spontaneous and exothermic. |
| Databáze: | OpenAIRE |
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