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Conductometric and viscometric investigation of poly( N ‐vinylimidazole)‐metal ion complex formation
Author(s) -
Pekel Nursel,
Güner Alý,
Güven Olgun
Publication year - 2002
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.10613
Subject(s) - imidazole , protonation , aqueous solution , chemistry , metal , metal ions in aqueous solution , cadmium , conductometry , copper , cobalt , inorganic chemistry , ion , polymer chemistry , nuclear chemistry , organic chemistry
The complexation of copper (Cu 2+ ), cobalt (Co 2+ ), and cadmium (Cd 2+ ) ions with poly( N ‐vinylimidazole) (PVIm) and its protonated form in aqueous solution was studied conductometrically and viscometrically. From the conductometric and viscometric curves, it was found that four imidazole units were coordinated with one metal ion in the complex systems. Both studies showed that the complex formation tendency decreased in the following order: Cu 2+ > Co 2+ > Cd 2+ . Complex properties of metal ions with imidazole group were explained by referring to Pearson's treatment, as hard and soft acids and bases. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 376–384, 2002