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Date of Award
Open Access Dissertation
Doctor of Philosophy (PhD)
Polymer Science and Engineering
Chapter I and Appendix A introduce the problem of a viscosity increase with increasing shear rate. The phenomenon is related to possible shifts in the glass transition, Tg. The WLF and Tammann-Hesse equations are used to correlate viscosity changes with shifts in Tg. The initial parameters considered which possibly affect Tg are frequency, shear rate and pressure.
Penwell, Richard Carlton, "Pressure effects in the capillary flow of newtonian and shear-thinning polymers." (1970). Doctoral Dissertations 1896 - February 2014. 579.