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Date of Award


Access Type

Open Access Dissertation

Document type


Degree Name

Doctor of Philosophy (PhD)

Degree Program

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.