1.   These are crystalline polymers with chain orientation virtually perfect in one direction.

2.   Partially crystalline polymers present complex spectra as they are multi-phase materials, in which the molecular motions are more restricted in the crystalline phase than in the amorphous phase.

3.   A particularly effective way of examining partially crystalline polymers is by X-ray diffraction.

4.   Even with carefully annealed specimens, it is thought that the equilibrium melting temperature of the completely crystalline polymer T m is never actually attained.

5.   While spherulites are characteristic of crystalline polymers, they have also been observed to form in low molar mass compounds which are crystallized from highly viscous media.