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Kafetzi M, Borchert KB, Steinbach C, Schwarz D, Pispas S, Schwarz S. Thermoresponsive PNIPAM-b-PAA block copolymers as “smart” adsorbents of Cu(II) for water restore treatments. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.126049] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Sadeghi I, Asatekin A. Spontaneous Self‐Assembly and Micellization of Random Copolymers in Organic Solvents. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700226] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ilin Sadeghi
- Chemical and Biological Engineering Department Tufts University Medford MA 02155 USA
| | - Ayse Asatekin
- Chemical and Biological Engineering Department Tufts University Medford MA 02155 USA
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Fomina EK, Krul’ LP, Grinyuk EV. Phase state of aqueous solutions of acrylamide–sodium acrylate copolymers in the presence of copper, zinc, and manganese ions. RUSS J APPL CHEM+ 2015. [DOI: 10.1134/s1070427215090189] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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4
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Zhong L, Peng X, Song L, Yang D, Cao X, Sun R. Adsorption of Cu2+and Ni2+from Aqueous Solution by Arabinoxylan Hydrogel: Equilibrium, Kinetic, Competitive Adsorption. SEP SCI TECHNOL 2013. [DOI: 10.1080/01496395.2013.804085] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Lu Q, Gao P, Zhi H, Zhao H, Yang Y, Sun B. Preparation of Cu(II) ions adsorbent from acrylic acid-grafted corn starch in aqueous solutions. STARCH-STARKE 2012. [DOI: 10.1002/star.201200051] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Sanson N, Bouyer F, Destarac M, In M, Gérardin C. Hybrid polyion complex micelles formed from double hydrophilic block copolymers and multivalent metal ions: size control and nanostructure. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:3773-3782. [PMID: 22242909 DOI: 10.1021/la204562t] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Hybrid polyion complex (HPIC) micelles are nanoaggregates obtained by complexation of multivalent metal ions by double hydrophilic block copolymers (DHBC). Solutions of DHBC such as the poly(acrylic acid)-block-poly(acrylamide) (PAA-b-PAM) or poly(acrylic acid)-block-poly(2-hydroxyethylacrylate) (PAA-b-PHEA), constituted of an ionizable complexing block and a neutral stabilizing block, were mixed with solutions of metal ions, which are either monoatomic ions or metal polycations, such as Al(3+), La(3+), or Al(13)(7+). The physicochemical properties of the HPIC micelles were investigated by small angle neutron scattering (SANS) and dynamic light scattering (DLS) as a function of the polymer block lengths and the nature of the cation. Mixtures of metal cations and asymmetric block copolymers with a complexing block smaller than the stabilizing block lead to the formation of stable colloidal HPIC micelles. The hydrodynamic radius of the HPIC micelles varies with the polymer molecular weight as M(0.6). In addition, the variation of R(h) of the HPIC micelle is stronger when the complexing block length is increased than when the neutral block length is increased. R(h) is highly sensitive to the polymer asymmetry degree (block weight ratio), and this is even more true when the polymer asymmetry degree goes down to values close to 3. SANS experiments reveal that HPIC micelles exhibit a well-defined core-corona nanostructure; the core is formed by the insoluble dense poly(acrylate)/metal cation complex, and the diffuse corona is constituted of swollen neutral polymer chains. The scattering curves were modeled by an analytical function of the form factor; the fitting parameters of the Pedersen's model provide information on the core size, the corona thickness, and the aggregation number of the micelles. For a given metal ion, the micelle core radius increases as the PAA block length. The radius of gyration of the micelle is very close to the value of the core radius, while it varies very weakly with the neutral block length. Nevertheless, the radius of gyration of the micelle is highly dependent on the asymmetry degree of the polymer: if the neutral block length increases in a large extent, the micelle radius of gyration decreases due to a decrease of the micelle aggregation number. The variation of the R(g)/R(h) ratio as a function of the polymer block lengths confirms the nanostructure associating a dense spherical core and a diffuse corona. Finally, the high stability of HPIC micelles with increasing concentration is the result of the nature of the coordination complex bonds in the micelle core.
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Affiliation(s)
- Nicolas Sanson
- Institut Charles Gerhardt, UMR 5253 CNRS/ENSCM/UM2/UM1, 8 Rue de L'Ecole Normale, 34296 Montpellier Cedex 5, France
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Liang YN, Hu J, Tam MKC, Hu X. CuOx nanotubes via an unusual complexation induced block copolymer-like self-assembly of poly(acrylic acid). RSC Adv 2012. [DOI: 10.1039/c2ra20951a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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Combet J, Rawiso M, Rochas C, Hoffmann S, Boué F. Structure of Polyelectrolytes with Mixed Monovalent and Divalent Counterions: SAXS Measurements and Poisson−Boltzmann Analysis. Macromolecules 2011. [DOI: 10.1021/ma102226v] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jérôme Combet
- Institut Charles Sadron, CNRS-UdS, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Michel Rawiso
- Institut Charles Sadron, CNRS-UdS, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Cyrille Rochas
- Centre de Recherches sur les Macromolécules Végétales, CNRS, BP 53, 38041 Grenoble 9, France
| | - Sven Hoffmann
- Dubble CRG beamline, European Synchrotron Radiation Facility, 6 rue Jules Horowitz, BP 220, 38043 Grenoble Cedex 9, France
| | - François Boué
- Laboratoire Léon Brillouin, CEA-CNRS, CE Saclay, 91191 Gif-sur-Yvette Cedex, France
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Warrender GW, Gilbert RG. Metal Binding by Water-Soluble Polychelates and Implications for Agriculture. Aust J Chem 2011. [DOI: 10.1071/ch11256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Means are developed to improve the metal ion delivery/remediation potential of polyacrylamides (PAMs), by incorporation of the co-monomer N-acryloyl-4-aminosalicylic acid. The polymers were synthesized by solution and inverse emulsion polymerization. The chemical binding of two soil micronutrients, Cu2+ and Fe3+, were investigated using atomic absorption spectroscopy. The modified PAM had an enhanced affinity for metal ions compared with conventional PAMs. This modified PAM has the potential as a delivery tool of plant micronutrients and stabilizers for agricultural soils undergoing intense irrigation. The same polymers may also provide a detoxifying effect in these applications where some micronutrient sources may be in excess and detrimental to productive agriculture.
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Kinetic Studies and Mechanism of Hydrogen Peroxide Catalytic Decomposition by Cu(II) Complexes with Polyelectrolytes Derived from L-Alanine and Glycylglycine. Bioinorg Chem Appl 2010; 2010. [PMID: 20721280 PMCID: PMC2913805 DOI: 10.1155/2010/643120] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2010] [Accepted: 05/30/2010] [Indexed: 11/18/2022] Open
Abstract
The catalytic decomposition of hydrogen peroxide by Cu(II) complexes with polymers bearing L-alanine (PAla) and glycylglycine (PGlygly) in their side chain was studied in alkaline aqueous media. The reactions were of pseudo-first order with respect to [H2O2] and [L-Cu(II)] (L stands for PAla or PGlygly) and the reaction rate was increased with pH increase. The energies of activation for the reactions were determined at pH 8.8, in a temperature range of 293–308 K. A suitable mechanism is proposed to account for the kinetic data, which involves the Cu(II)/Cu(I) redox pair, as has been demonstrated by ESR spectroscopy. The trend in catalytic efficiency is in the order PGlygly>PAla, due to differences in modes of complexation and in the conformation of the macromolecular ligands.
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Iatridi Z, Daktiloudis A, Bokias G. Investigation of binary polymer/surfactant or ternary polymer/surfactant/Cu2+complexes in aqueous solution through Nile red probing. POLYM INT 2010. [DOI: 10.1002/pi.2845] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Lages S, Michels R, Huber K. Coil-Collapse and Coil-Aggregation due to the Interaction of Cu2+ and Ca2+ Ions with Anionic Polyacylate Chains in Dilute Solution. Macromolecules 2010. [DOI: 10.1021/ma9027239] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- S. Lages
- Department Chemie, Universität Paderborn, Fakultät für Naturwissenschaften, Warburger Strasse 100, D-33098 Paderborn, Germany
| | - R. Michels
- Department Chemie, Universität Paderborn, Fakultät für Naturwissenschaften, Warburger Strasse 100, D-33098 Paderborn, Germany
| | - K. Huber
- Department Chemie, Universität Paderborn, Fakultät für Naturwissenschaften, Warburger Strasse 100, D-33098 Paderborn, Germany
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Oikonomou EK, Lezi N, Bokias G, Kallitsis JK, Iliopoulos I. Time-dependent Cu2+-induced gelation of poly(ethylene-alt-maleic acid) in aqueous solution. Eur Polym J 2009. [DOI: 10.1016/j.eurpolymj.2009.09.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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14
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Iatridi Z, Bokias G. Formation of ternary poly(acrylic acid)-surfactant-Cu2+ complexes in aqueous solution: quenching of pyrene fluorescence and pH-controlled "on-off" emitting properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:11506-11513. [PMID: 18817424 DOI: 10.1021/la8019793] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The formation of binary and ternary complexes of poly(acrylic acid) (PAA) with N, N, N, N-dodecyltrimethylammonium chloride (DTAC) and/or Cu (2+) ions is investigated in dilute aqueous solution through turbidimetry, viscometry, and pyrene fluorescence probing. It is shown that the PAA-DTAC and PAA-Cu (2+) complexation as well as the formation of ternary PAA-DTAC-Cu (2+) complexes are controlled from the pH of the aqueous solution. A pronounced quenching of the emission of pyrene is observed when ternary PAA-DTAC-Cu (2+) complexes are formed, as a result of the close proximity of Cu (2+) ions (complexed along the polymer chain) and the probe (solubilized in the hydrophobic mixed polymer-surfactant aggregates), as indicated from the corresponding Stern-Volmer plots. A significant quenching is also observed when poly(sodium styrene sulfonate) is used instead of PAA, indicating that electrostatically bound Cu (2+) ions are still effective quenchers of the emission of the probes under similar conditions. Finally, it is demonstrated that the formation-deformation of the ternary PAA-DTAC-Cu (2+) complexes upon changing pH may act as a pH-controlled "on-off" switch of the emission of pyrene in aqueous solution.
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Affiliation(s)
- Z Iatridi
- Department of Chemistry, University of Patras, GR-26504 Patras, Greece
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Seida Y, Imai T, Murata K, Nakano Y. Thermo-Responsivity of the Polyacrylate-Adsorbed Metal Cation and its Hydration Structure. ADSORPT SCI TECHNOL 2008. [DOI: 10.1260/0263-6174.26.6.423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Affiliation(s)
- Yoshimi Seida
- Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8503, Japan
| | - Takahiro Imai
- Department of Material Engineering, Shibaura Institute of Technology, Toyosu 3-7-5, Kohtoh-ku 135-8548, Japan
| | - Kiyoshi Murata
- Department of Material Engineering, Shibaura Institute of Technology, Toyosu 3-7-5, Kohtoh-ku 135-8548, Japan
| | - Yoshio Nakano
- Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8503, Japan
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Iatridi Z, Bokias G. Stabilization in Water of Polymer/Cu2+ Complexes Using Poly(sodium acrylate)-graft-poly(N,N-dimethylacrylamide) Graft Copolymers. MACROMOL CHEM PHYS 2008. [DOI: 10.1002/macp.200700635] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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17
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Elaboration and characterization of poly (acrylic acid-co-crotonic acid) copolymers: Application to extraction of metal cations Pb(II), Cd(II) and Hg(II) by complexation in aqueous media. REACT FUNCT POLYM 2008. [DOI: 10.1016/j.reactfunctpolym.2007.10.030] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Iatridi Z, Bokias G, Kallitsis JK. Physicochemical study of the complexation of poly(acrylic acid) with Cu2+ ions in water. J Appl Polym Sci 2008. [DOI: 10.1002/app.27757] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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19
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Erbil C, Gökçeören AT, Sezer E. Binary and Ternary Copper(II) Complexes with NIPAAm/IA Copolymers and Aminoacids: Interpretation of UV‐Visible Spectra and Cyclic Voltammograms. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2007. [DOI: 10.1080/10601320701235792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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20
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Çavuş S, Gürdağ G, Yaşar M, Güçlü K, Gürkaynak MA. The competitive heavy metal removal by hydroxyethyl cellulose-g-poly(acrylic acid) copolymer and its sodium salt: The effect of copper content on the adsorption capacity. Polym Bull (Berl) 2006. [DOI: 10.1007/s00289-006-0583-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Billon L, Meric V, Castetbon A, Francois J, Desbrieres J. Removal of copper ions from water of boilers by a modified natural based, corncobs. J Appl Polym Sci 2006. [DOI: 10.1002/app.24560] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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22
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Kavlak S, Kaplan Can H, Rzaev ZMO, Güner A. Thermal properties of poly(maleic anhydride-alt-acrylic acid) in the presence of certain metal chlorides. J Appl Polym Sci 2006. [DOI: 10.1002/app.22780] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Microstructural characterisation and behaviour in different salt solutions of sodium polymethacrylate-g-PEO comb copolymers. Colloids Surf A Physicochem Eng Asp 2005. [DOI: 10.1016/j.colsurfa.2005.03.008] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Rivas BL, Pereira E, Cid R, Geckeler KE. Polyelectrolyte-assisted removal of metal ions with ultrafiltration. J Appl Polym Sci 2005. [DOI: 10.1002/app.21424] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Rivas BL, Nicolás Schiappacasse L, Eduardo Pereira U, Moreno-Villoslada I. Interactions of polyelectrolytes bearing carboxylate and/or sulfonate groups with Cu(II) and Ni(II). POLYMER 2004. [DOI: 10.1016/j.polymer.2004.01.032] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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26
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Prabhu VM, Muthukumar M, Wignall GD, Melnichenko YB. Polyelectrolyte chain dimensions and concentration fluctuations near phase boundaries. J Chem Phys 2003. [DOI: 10.1063/1.1592496] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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27
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Rivas BL, Schiappacasse LN. Poly(acrylic acid-co-vinylsulfonic acid): Synthesis, characterization, and properties as polychelatogen. J Appl Polym Sci 2003. [DOI: 10.1002/app.11956] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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28
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Sutter B, Wasowicz T, Howard T, Hossner LR, Ming DW. Characterization of iron, manganese, and copper synthetic hydroxyapatites by electron paramagnetic resonance spectroscopy. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL. SOIL SCIENCE SOCIETY OF AMERICA 2002; 66:1359-1366. [PMID: 12817564 DOI: 10.2136/sssaj2002.1359] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The incorporation of micronutrients (e.g., Fe, Mn, Cu) into synthetic hydroxyapatite (SHA) is proposed for slow release of these nutrients to crops in NASA's Advanced Life Support (ALS) program for long-duration space missions. Separate Fe3+ (Fe-SHA), Mn2+ (Mn-SHA), and Cu2+ (Cu-SHA) containing SHA materials were synthesized by a precipitation method. Electron paramagnetic resonance (EPR) spectroscopy was used to determine the location of Fe3+, Mn2+, and Cu2+ ions in the SHA structure and to identify other Fe(3+)-, Mn(2+)-, and Cu(2+)-containing phases that formed during precipitation. The EPR parameters for Fe3+ (g=4.20 and 8.93) and for Mn2+ (g=2.01, A=9.4 mT, D=39.0 mT and E=10.5 mT) indicated that Fe3+ and Mn2+ possessed rhombic ion crystal fields within the SHA structure. The Cu2+ EPR parameters (g(z)=2.488, A(z)=5.2 mT) indicated that Cu2+ was coordinated to more than six oxygens. The rhombic environments of Fe3+ and Mn2+ along with the unique Cu2+ environment suggested that these metals substituted for the 7 or 9 coordinate Ca2+ in SHA. The EPR analyses also detected poorly crystalline metal oxyhydroxides or metal-phosphates associated with SHA. The Fe-, Mn-, and Cu-SHA materials are potential slow release sources of Fe, Mn, and Cu for ALS and terrestrial cropping systems.
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Affiliation(s)
- B Sutter
- National Research Council, NASA Ames Research Center, Moffett Field, CA 94035, USA.
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Roma-Luciow R, Sarraf L, Morcellet M. Complexes of poly(acrylic acid) with some divalent, trivalent and tetravalent metal ions. Eur Polym J 2001. [DOI: 10.1016/s0014-3057(01)00066-0] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Miller TC, Holcombe JA. Comparison and evaluation of the synthetic biopolymer poly-L-aspartic acid and the synthetic "plastic" polymer poly-acrylic acid for use in metal ion-exchange systems. JOURNAL OF HAZARDOUS MATERIALS 2001; 83:219-236. [PMID: 11348733 DOI: 10.1016/s0304-3894(01)00184-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Poly-L-aspartic acid (PLAsp), a biopolymer, and a similar synthetic polymer, poly-acrylic acid (PAA), each consisting of approximately 50 repeating Asp and acrylic acid monomers, respectively, were immobilized onto controlled pore glass (CPG) and evaluated for use as metal ion-exchange materials. Both polymers achieve metal complexation primarily through their repeating carboxylate side groups resulting in a similar binding trend for the metals tested (Ca(2+), Cd(2+), Co(2+), Cu(2+), Mg(2+), Mn(2+), Na(+), Ni(2+), Pb(2+)), with metal binding capacities ranging from <0.1 to 12 micromol metal/g column and <0.1 to 32 micromol metal/g column for PLAsp and PAA respectively. Cu(2+) and Pb(2+) exhibited strong binding to both materials, while the other metals demonstrated only weak or minimal binding. Both columns allowed for quantitative release of bound metals through acid stripping and experienced increased overall metal binding with increasing pH. Both systems also maintained similar structural and chemical stability when continuously exposed to neutral buffered, highly acidic, oxidizing, large molecule rich, and elevated temperature environments. The main differences between the two systems are the material cost and system biodegradability.
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Affiliation(s)
- T C Miller
- Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, TX 78712, USA
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Clarisse MD, Lucas EF, Amorim MCV. Avaliação da interação macromolécula/íon Zn+2 em meio aquoso: poli(acrilamida-co-ácido acrílico) e taninos. POLIMEROS 2000. [DOI: 10.1590/s0104-14282000000300013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Este trabalho visa o estudo da interação entre polímeros sintéticos e produtos naturais à base de taninos com o íon zinco (Zn+2) em meio aquoso para sua utilização na remoção de metais em efluentes. Uma série de copolímeros poli(acrilamida-co-ácido acrílico) de diferentes composições e homopolímeros de acrilamida e de ácido acrílico foram preparados, assim como, taninos comerciais foram utilizados como recebidos e purificados por extração. Uma metodologia de avaliação da eficiência de interação da macromolécula com o íon Zn+2 foi desenvolvida baseada em curva padrão de intensidade de absorção na região do ultravioleta-visível (UV-VIS) em função da concentração do complexo formado, utilizando colorimetria. A capacidade de interação com o íon zinco foi ligeiramente maior para os polímeros sintéticos porém o produto natural tem a vantagem de apresentar um custo mais baixo.
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Kruczala K, Schlick S. Interaction of Ionomers and Polyelectrolytes with Divalent Transition Metal Cations (Cu2+ and VO2+): A Study by Electron Spin Resonance (ESR) Spectroscopy and Viscosimetry. J Phys Chem B 1999. [DOI: 10.1021/jp9839697] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Krzysztof Kruczala
- Department of Chemistry, University of Detroit Mercy, Detroit, Michigan 48219
| | - Shulamith Schlick
- Department of Chemistry, University of Detroit Mercy, Detroit, Michigan 48219
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