Abstract
Phosphinic-derivative poly(styrene-co-divinylbenzene)-based on PS–DVB copolymers with different porosity degrees have been prepared by aromatic electrophilic substitution reaction using PCl3/AlCl3 followed by base-promoted hydrolysis. The phosphorylation reaction was analyzed by infra-red spectroscopy (FTIR), scanning electron microscopy (SEM), and thermogravimetry (TG/DTG). In addition, the phosphorous content of the phosphorylated copolymers was determined by spectrophotometry using the method based on sodium molybdate reactant so that the extension of that modification could be assessed. The performance of the phosphorylated resins in the extraction of Pb2+ from aqueous solutions in a batch system was also evaluated. The Pb2+ content was determined by atomic absorption spectrometry (AAS). These materials presented excellent extraction capacity under the contact time of 30 min and pH 6.
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We thank the Fundação Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), and Fundação Carlos Chagas de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ) for financial support. We would also like to express thanks to PETROFLEX, NITRIFLEX, and METACRIL companies for reagents donation.
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Souza, M.A.V., de Santa Maria, L.C., Costa, M.A.S. et al. Synthesis, characterization and evaluation of phosphorylated resins in the removal of Pb2+ from aqueous solutions. Polym. Bull. 67, 237–249 (2011). https://doi.org/10.1007/s00289-010-0373-z
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DOI: https://doi.org/10.1007/s00289-010-0373-z