Interaction of divalent ions of copper, magnesium and zinc with isotactic polymethacrylic acid

✍ Scribed by E.G. Kolawole; M.A. Bello

• Book ID: 103073365
• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 458 KB
• Volume: 16
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(80)90077-4

✦ Synopsis

The interaction of divalent metal ions (Cu 2 *, Mg 2+ and Zn" 4) with isotactic poly(methacrylic acid) (PMAA) has been studied using potentiometric, equilibrium dialysis and viscometric techniques. Partially neutralized isotactic PMAA was titrated with solutions of metal ion so as to enable the polymer/metal ion ratio to be varied over a wide range. The results show the existence of two types of complexes, one at low and the other at high metal ion concentrations. Results from dialysis studies confirm the observations from potentiometric results, indicating the existence of two types of complexes in the solution. Viscometric titrations reveal that the presence of the bound metal ions on the polyelectrolyte imposes structural restrictions on the chain.