シミュレーションに基づく絡み合い高分子のレオロジーに関する研究

A slip-link model of entangled polymeric liquid and its applications are presented. The model includes the three major relaxation mechanisms of entangled polymers, i.e., reptation, contour length fluctuation and constraint renewal. It can predict various linear and nonlinear rheological properties o...

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Bibliographic Details
Published inNihon Reoroji Gakkaishi Vol. 44; no. 5; p. 223
Main Author Takimoto, Jun-ichi
Format Journal Article
LanguageJapanese
Published Kyoto-City Japan Science and Technology Agency 2016
Subjects
Chain entanglement
Polymers
Reptation
Rheological properties
Rheology
Strain hardening
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ISSN0387-1533
2186-4586

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Summary:A slip-link model of entangled polymeric liquid and its applications are presented. The model includes the three major relaxation mechanisms of entangled polymers, i.e., reptation, contour length fluctuation and constraint renewal. It can predict various linear and nonlinear rheological properties of linear and star polymers. Especially, it can quantitatively predict, without any fitting parameters, the enhancement of the strain hardening of uniaxial elongational viscosity by an addition of small amount of a very high molecular weight component. The effect of dynamical tube dilation (DTD) is also correctly included. A new interpretation of DTD in the framework of the slip-link model is proposed.
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ISSN:0387-1533
2186-4586