Oil‐absorbent beads containing β‐cyclodextrin moieties: preparation via suspension polymerization and high oil absorbency |
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| Authors: | Jin He Lei Ding Jianping Deng Wantai Yang |
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| Institution: | 1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;2. College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | A novel type of polymeric beads with high oil absorbency was prepared via suspension polymerization technique. For this purpose, β‐cyclodextrin with vinyl groups (β‐CD‐MA) was first synthesized from β‐cyclodextrin (β‐CD) and glycidyl methacrylate, and identified by FT‐IR and 1H‐NMR spectroscopy analyses. Suspension polymerizations were carried out with styrene and stearyl acrylate as co‐monomers, β‐CD‐MA as cross‐linking agent, poly(vinylalcohol) as stabilizer and azoisobutyronitrile as initiator, providing polymeric beads in a quantitative yield. The oil‐absorbent beads had a porous structure and exhibited high oil absorbency: 55 times the dry weight in toluene, 52 times in xylene, 75 times in CHCl3 and 102 times in CCl4. The novel beads also showed high absorbency toward toluene from a toluene/water mixture, demonstrating the potential applications of such novel oil‐absorbent beads for cleaning organic contaminations from water. Copyright © 2011 John Wiley & Sons, Ltd. |
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| Keywords: | β ‐cyclodextrin high oil absorbency oil absorbent suspension polymerization |
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