Abstract
Polymer melts resist flow. In viscous flow the energy producing the flow is dissipated as heat. During flow some energy may be stored, giving rise to elastic effects, and, should the stress exceed some critical value, fracture may occur. When we are considering simple fluids then the viscosity may be clearly defined. The earlier chapters have shown that the viscosity of a polymer melt depends strongly on temperature, pressure and rate of deformation. This chapter introduces one further variable: geometry.
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References
F. Trouton, Proc. Roy. Soc. A77, 426–40 (1906).
A. S. Lodge, Elastic Liquids, Academic Press, 114-18 (1964).
Bibliography
J. Dealy, Poly. Eng. Sci., 11, 433–45 (1971). (General review of both theory and practice in stretching flows.)
F. N. Cogswell, Trans. Soc. Rheol., 16, 3, 383. (A review of rheometers for studying stretching flows.)
F. N. Cogswell, Appl. Poly. Symp., 27, 1–18 (1975). (A survey of rheological experiences with extensional flows.)
H. M. Laun and H. Munstedt, Rheol. Acta, 15, 10, 517–24 (1976). (Probably the most detailed study of the stretching flow response of a single melt.)
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© 1978 Applied Science Publishers Ltd
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Cogswell, F.N. (1978). Stretching Flows. In: Polymer Rheology. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-9666-9_12
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DOI: https://doi.org/10.1007/978-94-010-9666-9_12
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-9668-3
Online ISBN: 978-94-010-9666-9
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