Abstract
A general description is given of a range of the commonly observed microstructures in both isotropic and oriented polymers. The basic building block for the semicrystalline polymers is the lamella and it is described how these are incorporated into spherulites for isotropic polymers or fibrous elements in some oriented polymers. Alternative structures based on random coils or para – crystals are also described. A general overview is provided of deformation processes of polymers both crystalline and amorphous isotropic and oriented. The discussion starts with small-strain viscoelasticity and develops with increasing deformation through yield, and concludes with the drawing process used to produce materials of exceptionally high specific stiffness. Wherever possible the role of crystallinity, morphology, and specific deformation processes are described.
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