Chemical modification of cross-linked resin based on acrylonitrile for anchoring metal ions

Autor: Alcino Palermo de Aguiar, Juliano M Andrade, Marcos A. S. Costa, Flávia G Barbosa, Marcelo Souza de Carvalho, Mônica Regina Marques Palermo de Aguiar, Marcia C.V Amorim, Roberto C.C Ribeiro, Luiz Claudio de Santa Maria, Pedro Ivo C. Guimarães, Paulo Roberto Rezende
Rok vydání: 2001
Předmět:
Zdroj: Reactive and Functional Polymers. 49:133-143
ISSN: 1381-5148
DOI: 10.1016/s1381-5148(01)00068-2
Popis: Network resin based on acrylonitrile has been chemically modified through different reactions to obtain different chelating groups. The beads of resin were synthesized by aqueous suspension copolymerization of acrylonitrile (AN) and divinylbenzene (DVB). The chemical modifications of these beads’ cyano groups were carried out by reaction with hydroxylamine, hydrazine and ethanolamine producing amidoxime, amidrazone and oxazoline groups, respectively. The copolymer and modified resins were characterized by apparent density, surface area, average pore diameter, elemental analysis (CHN), FTIR and optical and electronic microscopies. Qualitative experiments of adsorption were conducted to evaluate the resins (modified and unmodified) on fixing Hg(II), Cd(II), Cu(II), Zn(II), Cd(II), Co(II), Ni(II) and Pb(II) from aqueous solution using batch extractions. Based on the results obtained, it was concluded that it is possible to modify chemically a resin containing cyano groups by different routes and to use these resins as a very low cost effective sorbent for metal ions.
Databáze: OpenAIRE
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