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The intrinsic viscosity of poly(acrylic acid) and partially neutralized poly(acrylic acid) by isoionic dilution
Author(s) -
Staikos Georges,
Bokias Georges
Publication year - 1993
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4990310412
Subject(s) - acrylic acid , counterion , dilution , counterion condensation , intrinsic viscosity , ionic strength , viscosity , polymer chemistry , ionic bonding , chemistry , materials science , thermodynamics , organic chemistry , composite material , aqueous solution , ion , polymer , physics , copolymer
The isoionic dilution method has been used to measure the intrinsic viscosity, [η], of a poly(acrylic acid) (PAA) sample as a function of neutralization degree, i , at low ionic strength, I = 1.0 × 10 M −3 . The results obtained for the counterion activity are in close agreement with Manning's theory for counterion condensation. The influence of the ionic strength, I , on [η] and on the Huggins coefficient, k ', was also examined and the exponents of the scaling laws relating these two parameters with I were found.