title: Synthesis and characterization of an insoluble polymer based on polyamidoamine: applications for the decontamination of metals in aqueous systems.
abstract: We present a novel, insoluble, low-generation polyamidoamine (PAMAM)-based polymer. The monomer and polymer were characterized by fourier transform infrared spectroscopy, electrospray ionization mass spectrometry and thermogravimetric measurement, revealing that G0 acryloyl-terminated PAMAM were synthesized and polymerized using ammonium persulfate as an initiator, producing a high-density PAMAM derivative (PAMAM-HD). PAMAM-HD was tested for its ability to remove Na(I), K(I), Ca(II), Mg(II), Cu(II), Mn(II), Cd(II), Pb(II) and Zn(II) ions from acidic, neutral and basic aqueous solutions. PAMAM-HD efficiently removed metals ions from all three solutions. The greatest absorption efficiency at neutral pH was observed against Cu(II), Cd(II) and Pb(II), and the experimental data were supported by the calculated Kd values. Our data could have a significant impact on water purification by providing an inexpensive and efficient polymer for the removal of metal ions.
authors.affiliation: Fraunhofer Chile Research Foundation-Center System Biotechnology, FCR-CSB, Nanobiotechnology Division at University of Talca, P.O. Box 747, Talca, Chile.
authors.forename: Oscar
authors.initials: O
authors.lastname: Valdés
authors.affiliation: Laboratory of Asymmetric Synthesis, Chemistry Institute of Natural Resources, University of Talca, P.O. Box 747, Talca, Chile.
authors.forename: Claudia E
authors.initials: CE
authors.lastname: Vergara
authors.affiliation: Universidad Andres Bello, Facultad de Biología, Center for Bioinformatics and Integrative Biology (CBIB), República 239, Santiago, Chile; Fraunhofer Institute for Molecular Biology and Applied Ecology, Aachen, Germany.
authors.forename: Maria B
authors.initials: MB
authors.lastname: Camarada
authors.affiliation: Fraunhofer Chile Research Foundation-Center System Biotechnology, FCR-CSB, Nanobiotechnology Division at University of Talca, P.O. Box 747, Talca, Chile; Laboratory of Asymmetric Synthesis, Chemistry Institute of Natural Resources, University of Talca, P.O. Box 747, Talca, Chile.
authors.forename: Veronica
authors.initials: V
authors.lastname: Carrasco-Sánchez
authors.affiliation: Fraunhofer Chile Research Foundation-Center System Biotechnology, FCR-CSB, Nanobiotechnology Division at University of Talca, P.O. Box 747, Talca, Chile.
authors.forename: Fabiane M
authors.initials: FM
authors.lastname: Nachtigall
authors.affiliation: Laboratory of Asymmetric Synthesis, Chemistry Institute of Natural Resources, University of Talca, P.O. Box 747, Talca, Chile.
authors.forename: Jaime
authors.initials: J
authors.lastname: Tapia
authors.affiliation: Fraunhofer Institute for Molecular Biology and Applied Ecology, Aachen, Germany; Institute of Molecular Biotechnology - RWTH Aachen University, Germany.
authors.forename: Rainer
authors.initials: R
authors.lastname: Fischer
authors.affiliation: Universidad Andres Bello, Facultad de Biología, Center for Bioinformatics and Integrative Biology (CBIB), República 239, Santiago, Chile; Fraunhofer Chile Research Foundation, M. Sánchez Fontecilla 310 piso 14, Las Condes, Chile.
authors.forename: F D
authors.initials: FD
authors.lastname: González-Nilo
authors.affiliation: Fraunhofer Chile Research Foundation-Center System Biotechnology, FCR-CSB, Nanobiotechnology Division at University of Talca, P.O. Box 747, Talca, Chile; Laboratory of Asymmetric Synthesis, Chemistry Institute of Natural Resources, University of Talca, P.O. Box 747, Talca, Chile. Electronic address: lssantos@utalca.cl.
authors.forename: Leonardo S
authors.initials: LS
authors.lastname: Santos
mesh_terms: D003666:Decontamination / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D007477:Ions / Q000737:chemistry / Q000302:isolation & purification; D013058:Mass Spectrometry; D008670:Metals / Q000737:chemistry / Q000302:isolation & purification; D015394:Molecular Structure; D011073:Polyamines / Q000737:chemistry*; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry; D013054:Spectrophotometry, Atomic; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D014867:Water / Q000737:chemistry; D018508:Water Purification / Q000379:methods*
chemical_list: D007477:Ions; D008670:Metals; C531249:Poly(amidoamine); D011073:Polyamines; D011108:Polymers; D014867:Water
keywords: Dendrimers; Heavy metals; Mass spectrometry; PAMAM