ABSTRACT
The structure of the polymer amorphous state represents one of the most important and disputable problems of the polymer physics. Before 1957, the idea dominated that chain macromolecules in the polymer amorphous phase display a random distribution and that "spaghetti" or "unwoven felt" models (the statistic coil) correctly describe the structure (or, more precisely, the absence of it) in this phase. For the first time, existence of the short range (or local) order in the polymers was suggested in ref. [1]. The hypothesis was based on comparison of the segmental volume and density of the amorphous phase, the effect of solid-phase crystallization, etc.
