Stereoregularity of macromolecules

The crystallization process involves two basic steps, nucleation and crystal growth. Nucleation starts with small, nanometer-sized areas where, as a result of heat motion, some chains or their segments arrange parallel to one another. Those nuclei, or seeds , can either dissociate, if thermal motion destroys the molecular order, or grow further, if the nuc- 

Due to the fact that the macromolecules are quite inhomogeneous with respect to their size and structure, and crystallization strongly depends on its conditions (particularly in non-isothermal regime), the final crystals exhibit different perfections. This causes that melting, which occurs in a relatively wide interval, as mentioned above. Recall that this is one of the major requirements which enables the preparation of SPCs. 

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As outlined in the Introduction, creating SPCs is based on some peculiar, but at the same time inherent, properties of polymers. This includes the stereoregularity of macromolecules, which makes it possible to have polymeric materials with different properties but keeping... 

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