Viscoelastic Properties of Polyelectrolyte Solutions. 2. Steady-State Compliance

Masayoshi Yamaguchi; Michio Wakutsu; Yoshiaki Takahashi; Ichiro Noda

doi:10.1021/ma00027a074

Viscoelastic Properties of Polyelectrolyte Solutions. 2. Steady-State Compliance

Masayoshi Yamaguchi, Michio Wakutsu, Yoshiaki Takahashi, Ichiro Noda

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

Steady-state compliance J_e of polyelectrolyte solutions was measured in the presence and absence of added salt. In dilute regions, J_e depends on molecular weight M, polymer concentration C, and concentration of added salt C_s. The M and C dependences are much stronger than that of nonionic polymers as given by J_e ∝ M^-2C^-3C₅. In entangled regions, on the other hand, J_e depends on C only in the same manner as for that of nonionic polymer solutions, but the concentration dependence is weaker than that of nonionic polymers as given by J_e ∝ C^-1.3. Moreover, the polymer concentration dependence of the weight-average relaxation time τ_w defined as the product of zero-shear viscosity η⁰ and J_e is found to increase with increasing C_s in semidilute regions for η⁰ and entangled regions for J_e. These features of J_e and τ_w in entangled regions can be explained by the same model as for zero-shear viscosity in Part 1.

Original language	English
Pages (from-to)	475-478
Number of pages	4
Journal	Macromolecules
Volume	25
Issue number	1
DOIs	https://doi.org/10.1021/ma00027a074
Publication status	Published - Jan 1 1992
Externally published	Yes

All Science Journal Classification (ASJC) codes

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/ma00027a074

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title = "Viscoelastic Properties of Polyelectrolyte Solutions. 2. Steady-State Compliance",

abstract = "Steady-state compliance Je of polyelectrolyte solutions was measured in the presence and absence of added salt. In dilute regions, Je depends on molecular weight M, polymer concentration C, and concentration of added salt Cs. The M and C dependences are much stronger than that of nonionic polymers as given by Je ∝ M-2C-3C5. In entangled regions, on the other hand, Je depends on C only in the same manner as for that of nonionic polymer solutions, but the concentration dependence is weaker than that of nonionic polymers as given by Je ∝ C-1.3. Moreover, the polymer concentration dependence of the weight-average relaxation time τw defined as the product of zero-shear viscosity η0 and Je is found to increase with increasing Cs in semidilute regions for η0 and entangled regions for Je. These features of Je and τw in entangled regions can be explained by the same model as for zero-shear viscosity in Part 1.",

author = "Masayoshi Yamaguchi and Michio Wakutsu and Yoshiaki Takahashi and Ichiro Noda",

year = "1992",

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T1 - Viscoelastic Properties of Polyelectrolyte Solutions. 2. Steady-State Compliance

AU - Yamaguchi, Masayoshi

AU - Wakutsu, Michio

AU - Takahashi, Yoshiaki

AU - Noda, Ichiro

PY - 1992/1/1

Y1 - 1992/1/1

N2 - Steady-state compliance Je of polyelectrolyte solutions was measured in the presence and absence of added salt. In dilute regions, Je depends on molecular weight M, polymer concentration C, and concentration of added salt Cs. The M and C dependences are much stronger than that of nonionic polymers as given by Je ∝ M-2C-3C5. In entangled regions, on the other hand, Je depends on C only in the same manner as for that of nonionic polymer solutions, but the concentration dependence is weaker than that of nonionic polymers as given by Je ∝ C-1.3. Moreover, the polymer concentration dependence of the weight-average relaxation time τw defined as the product of zero-shear viscosity η0 and Je is found to increase with increasing Cs in semidilute regions for η0 and entangled regions for Je. These features of Je and τw in entangled regions can be explained by the same model as for zero-shear viscosity in Part 1.

AB - Steady-state compliance Je of polyelectrolyte solutions was measured in the presence and absence of added salt. In dilute regions, Je depends on molecular weight M, polymer concentration C, and concentration of added salt Cs. The M and C dependences are much stronger than that of nonionic polymers as given by Je ∝ M-2C-3C5. In entangled regions, on the other hand, Je depends on C only in the same manner as for that of nonionic polymer solutions, but the concentration dependence is weaker than that of nonionic polymers as given by Je ∝ C-1.3. Moreover, the polymer concentration dependence of the weight-average relaxation time τw defined as the product of zero-shear viscosity η0 and Je is found to increase with increasing Cs in semidilute regions for η0 and entangled regions for Je. These features of Je and τw in entangled regions can be explained by the same model as for zero-shear viscosity in Part 1.

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Viscoelastic Properties of Polyelectrolyte Solutions. 2. Steady-State Compliance

Abstract

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