A molecular approach to the spurt effect in polymer melt flow
McLeish, Tom and Ball, R. C.. (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. ISSN 0887-6266Full text not available from this repository.
Official URL: http://dx.doi.org/10.1002/polb.1986.090240809
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 > 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.|
|Page Range:||pp. 1735-1745|
|Access rights to Published version:||Restricted or Subscription Access|
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