Viscoelastic Properties of Homogeneous Polymer Blends in the Terminal Region

Shinichi Kitade; Yoshiaki Takahashi; Ichiro Noda

doi:10.1021/ma00103a021

Viscoelastic Properties of Homogeneous Polymer Blends in the Terminal Region

Shinichi Kitade, Yoshiaki Takahashi, Ichiro Noda

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

19 Citations (Scopus)

Abstract

Viscoelastic properties of homogeneous polystyrene/poly(vinyl methyl ether) (PS/PVME) blends were studied in terms of the zero-shear viscosity ƞ° and the steady-state compliance J_e. The molecular weight and composition of PS (M_ps and ϕ_ps) were varied, whereas the molecular weight of PVME (M_PVME) was fixed, maintaining the condition M_ps ≫ M_PVME. The behavior of ƞ° and J_e was discussed as a function of M_ps and ϕps. In the entangled region, ƞ° can be explained by the scaling law, in the same way as in the semidilute polymer solutions, if ϕps < 0.25. The magnitudes of J_e and its M_ps and ϕps dependences are comparable to those of polymer solutions in the nonentangled region. Therefore, it is concluded that the viscoelastic properties of homogeneous PS/PVME blends in the terminal region studied here are very similar to those of the polymer solutions if M_ps ≫ M_PVME.

Original language	English
Pages (from-to)	7397-7401
Number of pages	5
Journal	Macromolecules
Volume	27
Issue number	25
DOIs	https://doi.org/10.1021/ma00103a021
Publication status	Published - Dec 1 1994
Externally published	Yes

All Science Journal Classification (ASJC) codes

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/ma00103a021

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title = "Viscoelastic Properties of Homogeneous Polymer Blends in the Terminal Region",

abstract = "Viscoelastic properties of homogeneous polystyrene/poly(vinyl methyl ether) (PS/PVME) blends were studied in terms of the zero-shear viscosity ƞ° and the steady-state compliance Je. The molecular weight and composition of PS (Mps and ϕps) were varied, whereas the molecular weight of PVME (MPVME) was fixed, maintaining the condition Mps ≫ MPVME. The behavior of ƞ° and Je was discussed as a function of Mps and ϕps. In the entangled region, ƞ° can be explained by the scaling law, in the same way as in the semidilute polymer solutions, if ϕps < 0.25. The magnitudes of Je and its Mps and ϕps dependences are comparable to those of polymer solutions in the nonentangled region. Therefore, it is concluded that the viscoelastic properties of homogeneous PS/PVME blends in the terminal region studied here are very similar to those of the polymer solutions if Mps ≫ MPVME.",

author = "Shinichi Kitade and Yoshiaki Takahashi and Ichiro Noda",

year = "1994",

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T1 - Viscoelastic Properties of Homogeneous Polymer Blends in the Terminal Region

AU - Kitade, Shinichi

AU - Takahashi, Yoshiaki

AU - Noda, Ichiro

PY - 1994/12/1

Y1 - 1994/12/1

N2 - Viscoelastic properties of homogeneous polystyrene/poly(vinyl methyl ether) (PS/PVME) blends were studied in terms of the zero-shear viscosity ƞ° and the steady-state compliance Je. The molecular weight and composition of PS (Mps and ϕps) were varied, whereas the molecular weight of PVME (MPVME) was fixed, maintaining the condition Mps ≫ MPVME. The behavior of ƞ° and Je was discussed as a function of Mps and ϕps. In the entangled region, ƞ° can be explained by the scaling law, in the same way as in the semidilute polymer solutions, if ϕps < 0.25. The magnitudes of Je and its Mps and ϕps dependences are comparable to those of polymer solutions in the nonentangled region. Therefore, it is concluded that the viscoelastic properties of homogeneous PS/PVME blends in the terminal region studied here are very similar to those of the polymer solutions if Mps ≫ MPVME.

AB - Viscoelastic properties of homogeneous polystyrene/poly(vinyl methyl ether) (PS/PVME) blends were studied in terms of the zero-shear viscosity ƞ° and the steady-state compliance Je. The molecular weight and composition of PS (Mps and ϕps) were varied, whereas the molecular weight of PVME (MPVME) was fixed, maintaining the condition Mps ≫ MPVME. The behavior of ƞ° and Je was discussed as a function of Mps and ϕps. In the entangled region, ƞ° can be explained by the scaling law, in the same way as in the semidilute polymer solutions, if ϕps < 0.25. The magnitudes of Je and its Mps and ϕps dependences are comparable to those of polymer solutions in the nonentangled region. Therefore, it is concluded that the viscoelastic properties of homogeneous PS/PVME blends in the terminal region studied here are very similar to those of the polymer solutions if Mps ≫ MPVME.

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Viscoelastic Properties of Homogeneous Polymer Blends in the Terminal Region

Abstract

All Science Journal Classification (ASJC) codes

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