Unexpected rheological behavior of concentrated poly (methacrylic acid) aqueous solutions
Concentrated aqueous solutions of poly (methacrylic acid)(PMAA) display a sharp increase
of their viscosity over time under shear. This phenomenon known as antithixotropy is studied
as a function of both polymer concentration and ionization degree. Both shear and
oscillatory shear experiments are used to characterize the rheological behavior of PMAA
solutions, with a peculiar attention to the semidilute regime. In the linear regime, nonionized
PMAA solutions tend to behave like associative polymers with a highest exponent for the …
of their viscosity over time under shear. This phenomenon known as antithixotropy is studied
as a function of both polymer concentration and ionization degree. Both shear and
oscillatory shear experiments are used to characterize the rheological behavior of PMAA
solutions, with a peculiar attention to the semidilute regime. In the linear regime, nonionized
PMAA solutions tend to behave like associative polymers with a highest exponent for the …
[引用][C] Unexpected Rheological Behavior of Concentrated Poly (methacrylic acid) Aqueous Solutions
R Clément, L Cédric, A Catherine, F Abdoulaye… - 2017
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