Characteristic Time for Self-Diffusion Coefficient of Linear Polymers in Semidilute Solutions

Yoshiaki Takahashi; Masayoshi Yamaguchi; Ichiro Noda

doi:10.1678/rheology1973.20.4_210

Characteristic Time for Self-Diffusion Coefficient of Linear Polymers in Semidilute Solutions

Yoshiaki Takahashi, Masayoshi Yamaguchi, Ichiro Noda

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

Abstract

The concentration dependence of characteristic time τ_r for self-diffusion coefficient D_s of linear polymers in good solvents was discussed in comparison with that of the weightaverage relaxation time τ_w for viscoelastic properties. Similarities were found for the concentration regions of τ_r, and τ_w, and also for the concentration dependences of τ's in the respective regions. On the basis of the similarities, it is pointed out that almost all the D_s data of polymers at finite concentrations so far published should not be discussed in terms of the reputation model since the solutions are not regarded as those in the well entangled regions.

Original language	English
Pages (from-to)	210-213
Number of pages	4
Journal	Nihon Reoroji Gakkaishi
Volume	20
Issue number	4
DOIs	https://doi.org/10.1678/rheology1973.20.4_210
Publication status	Published - 1992
Externally published	Yes

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1678/rheology1973.20.4_210

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title = "Characteristic Time for Self-Diffusion Coefficient of Linear Polymers in Semidilute Solutions",

abstract = "The concentration dependence of characteristic time τr for self-diffusion coefficient Ds of linear polymers in good solvents was discussed in comparison with that of the weightaverage relaxation time τw for viscoelastic properties. Similarities were found for the concentration regions of τr, and τw, and also for the concentration dependences of τ's in the respective regions. On the basis of the similarities, it is pointed out that almost all the Ds data of polymers at finite concentrations so far published should not be discussed in terms of the reputation model since the solutions are not regarded as those in the well entangled regions.",

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

year = "1992",

doi = "10.1678/rheology1973.20.4_210",

language = "English",

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AU - Takahashi, Yoshiaki

AU - Yamaguchi, Masayoshi

AU - Noda, Ichiro

PY - 1992

Y1 - 1992

N2 - The concentration dependence of characteristic time τr for self-diffusion coefficient Ds of linear polymers in good solvents was discussed in comparison with that of the weightaverage relaxation time τw for viscoelastic properties. Similarities were found for the concentration regions of τr, and τw, and also for the concentration dependences of τ's in the respective regions. On the basis of the similarities, it is pointed out that almost all the Ds data of polymers at finite concentrations so far published should not be discussed in terms of the reputation model since the solutions are not regarded as those in the well entangled regions.

AB - The concentration dependence of characteristic time τr for self-diffusion coefficient Ds of linear polymers in good solvents was discussed in comparison with that of the weightaverage relaxation time τw for viscoelastic properties. Similarities were found for the concentration regions of τr, and τw, and also for the concentration dependences of τ's in the respective regions. On the basis of the similarities, it is pointed out that almost all the Ds data of polymers at finite concentrations so far published should not be discussed in terms of the reputation model since the solutions are not regarded as those in the well entangled regions.

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Characteristic Time for Self-Diffusion Coefficient of Linear Polymers in Semidilute Solutions

Abstract

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