Viscoelasticity and the non-linear rheology of polymers are responsible for phenomena such as rod climbing or...

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Mechanical Engineering

Viscoelasticity and the non-linear rheology of polymers areresponsible for phenomena such as rod climbing or die swell as wellas part of the challenge of processing polymer melts. 1) explainwhy from a polymer physics point of view polymer melts can havenon-Newtonian behaviors that do not scale linearly with molecularweight and 2) explain what one of these two examples are and positan explanation for it.

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