Premium
Potentiometric and thermodynamic studies of vinylacetic acid and its metal complexes in monomeric and polymeric forms
Author(s) -
AlSarawy Ahmed A.
Publication year - 2005
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.21337
Subject(s) - potentiometric titration , endothermic process , monomer , chemistry , dissociation (chemistry) , metal , polymer chemistry , ligand (biochemistry) , chemical stability , metal ions in aqueous solution , polymer , organic chemistry , adsorption , biochemistry , receptor , electrode
Proton–monomeric ligand dissociation and metal–monomeric ligand stability constants of vinylacetic acid (VA) with some metal ions were calculated potentiometrically in 0.1 M KCl. Also, in the presence of 2,2′‐azobisisobutyronitrile as initiator, the proton–polymeric ligand dissociation and metal–polymeric ligand stability constants were calculated. The effect of temperature on the dissociation of VA and the stability of its formed complexes were studied in monomeric and polymeric forms. The corresponding thermodynamic functions were derived and discussed. The dissociation process was nonspontaneous, endothermic, and entropically unfavorable. The formation of the metal complexes was found to be spontaneous, endothermic, and entropically favorable. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 952–956, 2005