Synthesis of amine-type adsorbents with emulsion graft polymerization of 4-hydroxybutyl acrylate glycidylether

Ma, H.; Morita, Kazuaki*; Hoshina, Hiroyuki; Seko, Noriaki

A pre-irradiation method was used for emulsion graft polymerization of 4-hydroxybutyl acrylate glycidylether (4-HB) onto polyethylene/polypropylene (PE/PP) nonwoven fabric. The degree of grafting (D) which can be calculated by weight increment was determined as a function of reaction time, irradiation dose, and monomer concentration. After 30 kGy irradiation, with 4-HB concentration of 5%, surfactant Span 20 of 0.5% at 40C for 2 h, the trunk polymer was made grafted at a D of 135%. 4-HB-grafted PE/PP nonwoven fabric was modified by ethylenediamine (EDA) in isopropyl alcohol (IPA) as a solvent at 60C. The removal ratio from the EDA modified adsorbent of the metal ions is in the order of Cu Pb Zn Ni Li. Compared with glycidyl methacrylate (GMA) which is a typical functional monomer for graft polymerization, 4-HB-grafted adsorbent exhibited not only better mechanical property but also higher adsorption capacity of Cu and Pb.