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Viscoelastic properties of polyelectrolyte solutions in non‐entangled concentrated regions
Author(s) -
Takahashi Yoshiaki,
Iio Shinji,
Matsumoto Naoki,
Noda Ichiro
Publication year - 1996
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/(sici)1097-0126(199608)40:4<269::aid-pi553>3.0.co;2-l
Subject(s) - viscoelasticity , moduli , polyelectrolyte , aqueous solution , thermodynamics , viscosity , oscillation (cell signaling) , materials science , dynamic mechanical analysis , dynamic modulus , intrinsic viscosity , polymer chemistry , chemistry , polymer , physics , composite material , quantum mechanics , biochemistry
Abstract Viscoelastic properties of non‐entangled concentrated aqueous solutions of three sodium polystyrenesulfonates with low molecular weights were measured in oscillation flows. Master curves of dynamic moduli were obtained by shifting the moduli data measured at different concentrations along the frequency (ω) axis for each molecular weight. The concentration shift factor used in making the master curves composes a single line irrespective of molecular weight. Storage and loss moduli are proportional to ω 2 and ω, respectively, in the terminal region, while they are proportional to ω 1/2 in the transition region. All the master curves can be well represented by the modified Rouse theory using the experimental values of concentration, molecular weight and viscosity in a reference state.