Rheology and Viscoelasticity of Polymeric Materials

When an amorphous polymer possesses a certain amount of rotational freedom, it can be deformed by application of force. Application of force will cause the polymer to flow and the molecules will 

At proper temperatures the mechanical properties of many amorphous polymers may approach the physical properties of three idealized materials individually. These are [20, 22, 24]  

A Hookian or an ideal elastic solid, whose small reversible deformations are directly proportional 

A Newtonian liquid that flows with a viscosity independent of the rate of shear. 

An ideal elastomer that is capable of reversible extension of several hundred percent, with a much 

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