Polymer-Mode-Coupling Theory of Finite-Size-Fluctuation Effects in Entangled Solutions, Melts, and Gels. 2. Comparison with Experiment

Fuchs, Matthias; Schweizer, Kenneth S.

Polymer-Mode-Coupling Theory of Finite-Size-Fluctuation Effects in Entangled Solutions, Melts, and Gels. 2. Comparison with Experiment

Dateien

polymer.pdfGröße: 270.36 KBDownloads: 334

Datum

1997

Autor:innen

Fuchs, Matthias

Schweizer, Kenneth S.

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Macromolecules. 1997, 30, pp. 5156-5171. Available under: doi: 10.1021/ma9702354

Zusammenfassung

The predictions of polymer mode coupling theory for the finite size corrections to the transport coefficients of entangled polymeric systems are tested in comparison with various experimental data. It is found that quantitative descriptions of the viscosities, n, dielectric relaxation time, t, and diffusion coefficients, D, of polymer melts can be achieved with two microscopic structural fit parameters whose values are in the range expected from independent theoretical or experimental information.The variation of tracer dielectric relaxation times from Rouse to reptationlike behavior upon changes of the matrix molecular weight is analyzed. Self-diffusion and tracer diffusion constants of entangled polymer solutions can be explained as well, if one further parameter of the theory is adjusted. Extensions of the theory to polymer tracer diffusion through poly(vinyl methyl ether) and polyacrylamide gels provide an explanation of the observation of anomalously high molecular weight scaling exponents in a range where the size of the tracer, Rg, already considerably exceeds the gel pore size.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

FUCHS, Matthias, Kenneth S. SCHWEIZER, 1997. Polymer-Mode-Coupling Theory of Finite-Size-Fluctuation Effects in Entangled Solutions, Melts, and Gels. 2. Comparison with Experiment. In: Macromolecules. 1997, 30, pp. 5156-5171. Available under: doi: 10.1021/ma9702354

BibTex

@article{Fuchs1997Polym-5117,
  year={1997},
  doi={10.1021/ma9702354},
  title={Polymer-Mode-Coupling Theory of Finite-Size-Fluctuation Effects in Entangled Solutions, Melts, and Gels. 2. Comparison with Experiment},
  volume={30},
  journal={Macromolecules},
  pages={5156--5171},
  author={Fuchs, Matthias and Schweizer, Kenneth S.}
}

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