caa a22 4500 37890325X CHVBK 20180305123523.0 cr unu---uuuuu 161128e20041201xx s 000 0 eng 10.1515/epoly.2004.4.1.414 doi (NATIONALLICENCE)gruyter-10.1515/epoly.2004.4.1.414 Removal of copper-based catalyst in atom transfer radical polymerization using different extraction techniques [Elektronische Daten] [Isabelle Ydens, Sébastien Moins, François Botteman, Philippe Degée, Philippe Dubois] Several methods allowing the removal of copper-based ATRP active complexes from crude amino-functionalized polymethacrylate chains are compared. Among them, precipitation in basic medium is one of the most efficient techniques since it allows high recovery yields (above 90%) with a residual metal content as low as 5 ppm. Extraction methods such as liquid-liquid phase separation and dialysis but also selective adsorption on acidic macroporous ion exchange resin constitute other attractive alternatives. As far as water-insoluble polymers are concerned, catalyst adsorption on alumina remains the most universal method and provides acceptable recovery efficiency. However, we want to stress the key-importance of the experimental adsorption conditions and above all the relative content of alumina used for catalyst extraction. © 2013 by Walter de Gruyter GmbH & Co. Ydens Isabelle Laboratory of Polymeric and Composite Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium; Fax 0032 (65) 37 34 84 aut Moins Sébastien Laboratory of Polymeric and Composite Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium; Fax 0032 (65) 37 34 84 aut Botteman François Laboratory of Polymeric and Composite Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium; Fax 0032 (65) 37 34 84 aut Degée Philippe Laboratory of Polymeric and Composite Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium; Fax 0032 (65) 37 34 84 aut Dubois Philippe Laboratory of Polymeric and Composite Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium; Fax 0032 (65) 37 34 84 aut e-Polymers De Gruyter 4/1(2004-12-01), 414-420 2197-4586 4:1<414 2004 4 epoly https://doi.org/10.1515/epoly.2004.4.1.414 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1515/epoly.2004.4.1.414 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ydens Isabelle Laboratory of Polymeric and Composite Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium; Fax 0032 (65) 37 34 84 aut NATIONALLICENCE 700 1- Moins Sébastien Laboratory of Polymeric and Composite Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium; Fax 0032 (65) 37 34 84 aut NATIONALLICENCE 700 1- Botteman François Laboratory of Polymeric and Composite Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium; Fax 0032 (65) 37 34 84 aut NATIONALLICENCE 700 1- Degée Philippe Laboratory of Polymeric and Composite Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium; Fax 0032 (65) 37 34 84 aut NATIONALLICENCE 700 1- Dubois Philippe Laboratory of Polymeric and Composite Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium; Fax 0032 (65) 37 34 84 aut NATIONALLICENCE 773 0- e-Polymers De Gruyter 4/1(2004-12-01), 414-420 2197-4586 4:1<414 2004 4 epoly CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter