Physicochemical study of the complexation of poly(acrylic acid) with Cu2+ ions in water

Z. Iatridi; G. Bokias; J. K. Kallitsis

doi:10.1002/app.27757

journal article Jan 11, 2008

Physicochemical study of the complexation of poly(acrylic acid) with Cu2+ ions in water

Z. Iatridi G. Bokias J. K. Kallitsis

Journal of Applied Polymer Science Vol. 108 No. 2 pp. 769-776 · Wiley

View at Publisher Save 10.1002/app.27757

Abstract

AbstractThe complexation of poly(acrylic acid) (PAA) with Cu2+ ions in a dilute aqueous solution has been investigated as a function of the mixing molar ratio of the two species and the neutralization degree (i) of PAA by means of turbidimetry, viscometry, potentiometry, and ultraviolet–visible (UV–vis) spectrophotometry. Turbidimetry reveals that, for i > 0.1, phase separation takes place when the mixing ratio approaches the critical value of two carboxylate ions per Cu2+ ion, which is indicative of the formation of a 2 : 1 polymer/metal complex. This complex is very compact, as evidenced by the very low reduced viscosity values obtained just before phase separation. The variation of the fraction of complexed carboxylate anions and complexed Cu2+ ions can be followed as a function of the mixing ratio and i from the analysis of the potentiometric results for i < 0.5. Finally, the combination of the potentiometric and UV–vis spectrophotometric results supports the idea that both mononuclear and binuclear PAA/Cu2+ complexes are formed in an aqueous solution, depending on the mixing ratio and i. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008

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Details

Published: Jan 11, 2008
Vol/Issue: 108(2)
Pages: 769-776
License: View

Authors

Laboratoire de Physico-chimie Macromoléculaire, UMR 7615, ESPCI-CNRS-UPMC, 10 rue Vauquelin, 75231 Paris Cedex 05, France; Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova ul.28, Moscow 117823, Russia; and Physics Department, Moscow State University, Vorob'evu gory, Moscow 119899, Russia

J

J. K. Kallitsis

Cite This Article

Z. Iatridi, G. Bokias, J. K. Kallitsis (2008). Physicochemical study of the complexation of poly(acrylic acid) with Cu2+ ions in water. Journal of Applied Polymer Science, 108(2), 769-776. https://doi.org/10.1002/app.27757

Physicochemical study of the complexation of poly(acrylic acid) with Cu2+ ions in water

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