Browsing by KHAS Author "Tan, Nükhet"
A glycidyl methacrylate-based resin with pendant urea groups as a high capacity mercury specific sorbent Authors:Bıçak, Niyazi; Sherrington, David C.; Şungur, Şana Kutun; Tan, Nükhet
Publisher and Date:(Elsevier Science Bv, 2003)Polymer-supported pendant urea groups have been demonstrated to be very efficient in selective removal of mercuric ions from aqueous solutions. Methyl methacrylate (0.5 mol)-glycidyl methacrylate (0.4 mol)-divinylbenzene (0.1 mol) terpolymer beads have been prepared by suspension polymerisation. Urea functions have been incorporated into the bead polymer (210-420 mum) via a two-step modification of the epoxy groups involving firstly reaction with excess of triethylenetetramine followed by acidic ...
Authors:Bıçak, Niyazi; Şungur, Şana Kutun; Tan, Nükhet; Bensebaa, Farid; Deslandes, Yves
Publisher and Date:(John Wiley & Sons Inc, 2002)A new method for depositing metal onto a polymer surface has been developed in which the metal coating of polymer beads is performed with hydrazine functions as reducing agents on the surface of the polymer itself. In this study glycidyl methacrylate-methyl methaerylate-divinyl benzene terpolymer was prepared as spherical beads with a suspension polymerization methodology. Beads of the polymer sample (210-420-mum fraction) containing 3.4 mmol g(-1) epoxy were treated with an excess of hydrazinium ...