ABSTRACT
The fabrication of an article from a polymeric material in the bulk state, whether it be the molding of a thermosetting plastic or the spinning of a fiber from the melt, involves deformation of the material by applied forces. Afterward, the finished article is inevitably subjected to stresses; hence, it is important to be aware of the mechanical and rheological properties of each material, as well as understand the basic principles underlying their response to such forces.
