Preparation and characterization of poly(isobutyl methacrylate) microbeads with grafted amidoxime groups |
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| Institution: | 1. Department of Chemistry, Faculty of Science, Gazi University, 06500 Besevler, Ankara, Turkey;2. Department of Chemical Engineering, Gazi University, 06570 Maltepe, Ankara, Turkey;3. Department of Chemistry, Hacettepe University, 06532 Beytepe, Ankara, Turkey;1. School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China;2. Engineering Research Center of Biomass Materials, Ministry of Education, Mianyang 621010, Sichuan, China;3. State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China;1. Department of Respiratory Medicine, Royal Brompton Hospital, London SW3 6NP, UK;1. School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0373, USA;2. Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA;1. Beijing Key Laboratory of Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, PR China;2. Department of Chemical Engineering, Process Engineering for Sustainable Systems, KU Leuven, Belgium;3. Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, PR China |
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| Abstract: | Poly(isobutyl methacrylate) (PiBMA) microspheres with a 800- to 1500-μm diameter range synthesized by suspension polymerization technique were used as the trunk polymer in the preparation of a highly efficient new adsorbent. Glycidyl methacrylate (GMA) was grafted onto the trunk polymer by pre-irradiation grafting technique. Grafting conditions were optimized, and GMA grafted PiBMA beads were modified with iminodiacetonitrile (IDAN) in ethanol at 80 °C. The nitrile groups were then amidoximated by using 6% (m/v) hydroxylamine hydrochloride in methanol solution. The IDAN modification and the conversion of the nitrile groups to amidoxime were followed by FT-IR spectroscopy. The surface morphology and thermal behavior of the PiBMA and its modificated forms were also characterized by scanning electron microscopy (SEM) and thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) techniques further confirming modification and amidoximation. |
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