Discrepancies between linear viscoelastic measurements and double-reptation predictions for commercial polystyrene samples

Guzmán JD, Mangnus M, Aerts P, Mes E, Kaschta J, Pierini P (2008)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2008

Journal

Rheologica Acta Springer Verlag (Germany)

Publisher: Springer Verlag (Germany)

Book Volume: 47

Pages Range: 213-221

Journal Issue: 2

URI: https://link.springer.com/article/10.1007/s00397-007-0233-4

DOI: 10.1007/s00397-007-0233-4

Abstract

We have found discrepancies between the predictions of two double-reptation models and the corresponding linear viscoelasticity measurements for commercial, polydisperse polystyrene samples with weight-average molecular weights ranging from 140 to 300kg/mol. The accuracy of the experimental data has been confirmed by conducting viscoelasticity measurements in different laboratories using different types of rheometers and by verifying that small distortions in chromatographic measurements cannot account for the discrepancies seen in the viscoelastic response. In addition, we show that the discrepancies between predictions and measurements are systematic, suggesting that gaps in the theory are responsible for the mismatch. Is it concluded that commercial polystyrene resins may pose additional challenges for rheological modeling because of their relatively high polydispersity and low degree of entanglement. The experimental data given here can be used to validate future modeling efforts.

Authors with CRIS profile

Joachim Kaschta Lehrstuhl für Werkstoffwissenschaften (Polymerwerkstoffe)

Involved external institutions

The Dow Chemical Company US United States (USA) (US) Dow Benelux B.V. NL Netherlands (NL)

How to cite

APA:

Guzmán, J.D., Mangnus, M., Aerts, P., Mes, E., Kaschta, J., & Pierini, P. (2008). Discrepancies between linear viscoelastic measurements and double-reptation predictions for commercial polystyrene samples. Rheologica Acta, 47(2), 213-221. https://doi.org/10.1007/s00397-007-0233-4

MLA:

Guzmán, Job D., et al. "Discrepancies between linear viscoelastic measurements and double-reptation predictions for commercial polystyrene samples." Rheologica Acta 47.2 (2008): 213-221.

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