The molecular morphology of amorphous regions of drawn semicrystalline polymers is calculated assuming a minimum of the free conformational energy, provided that crystallite and amorphous region thicknesses and density ratio and macromolecule elongation due to polymer drawing are given parameters. The proportions of regular folds, adjacent re-entrant and random re-entrant loops, and tie chains and the length distributions of these subchains are calculated as functions of the amorphous region thickness and macromolecule elongation. Using a Monte-Carlo simulation, the distribution of local density within the amorphous region was studied, and introduction into the theory of an interfacial layer between the crystallite and amorphous regions where possible conformations of subchains are limited was substantiated
Посилання на статтю:
Thermodynamic prediction of molecular morphology of amorphous regions of drawn semicrystalline polymers / M. G. Zaitsev* and S. E. Varyukhin // Polymer. – 1992. – Vol 33. – P. 4717-4724.