We wrap up our discussion of the internal morphology of fibers, focusing on polymer properties, by considering what the arrangement of polymers into crystalline structures can do for strength, or how cross-linking agents can improve resiliency.

While the surface morphology of fibers is an important influence on properties like luster and hand, it is the internal, chemical structure of the polymers that make up the fibers that has the greatest influence on properties like strength and absorbency.