Polymer Bulletin

, 61:247 | Cite as

Investigation on thermodynamic parameters and stability of some polyelectrolyte complexes with respect to ionic strength of the medium

  • B. Vasheghani F.Email author
  • F. H. Rajabi
  • M. H. Ahmadi
  • F. Mashhadi


The effect of ionic strength of the medium on stability constant and related thermodynamic parameters (e.g. ΔH0 and ΔS0) has been studied for a typical polyelectrolyte interpolymer complexes e.g. poly (acrylic acid), poly (ethylene imine) in aqueous solution using various inorganic salts.

Stability constant K, and related thermodynamic parameters have been calculated and compared for interpolymer complex in different complexation medium using Osada’s method. The comparative study indicated considerable difference in the values of these parameters which has been explained on the basis of the relative strength of electrostatic interaction in different medium.


Acrylic Acid Stability Constant Inorganic Salt Polyelectrolyte Complex Strong Electrostatic Interaction 
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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • B. Vasheghani F.
    • 1
    Email author
  • F. H. Rajabi
    • 1
  • M. H. Ahmadi
    • 1
  • F. Mashhadi
    • 1
  1. 1.Faculty of Science, Department of ChemistryImam Khomeini International UniversityQazvinI.R.Iran

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