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A molecular approach to the spurt effect in polymer melt flow

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McLeish, Tom and Ball, Robin (1986) A molecular approach to the spurt effect in polymer melt flow. Journal of Polymer Science Part B: Polymer Physics, Vol.24 (No.8). pp. 1735-1745. doi:10.1002/polb.1986.090240809 ISSN 0887-6266.

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Official URL: http://dx.doi.org/10.1002/polb.1986.090240809

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Abstract

The Doi-Edwards theory of polymer melts, extended to include relaxation processes associated with chain-length equilibration, is used to make quantitative predictions of a discontinuity in the flow curve of a monodisperse melt in a capillary. A fluid interface between regions of high and low deformation rates is found to propagate from the former into the latter. Our results for the “spurt” and its hysteresis compare favorably with experiment using a molecular weight dependence of the ratio of “reptation time” (Td) to “equilibration time” (Teq) in agreement with that determined from nonlinear stress relaxation.

Item Type: Journal Article
Subjects: Q Science > QC Physics
T Technology > TP Chemical technology
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Polymer melting, Stress relaxation, Deformations (Mechanics), Molecular weights
Journal or Publication Title: Journal of Polymer Science Part B: Polymer Physics
Publisher: John Wiley & Sons, Inc.
ISSN: 0887-6266
Official Date: 1986
Dates:
DateEvent
1986Published
Volume: Vol.24
Number: No.8
Page Range: pp. 1735-1745
DOI: 10.1002/polb.1986.090240809
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access

Data sourced from Thomson Reuters' Web of Knowledge

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