Because of the stereoregular structure of the polymer, natural rubber crystallizes when strained or when stored at low temperatures. |
Because of their stereoregular chain microstructure, optically pure polylactides, poly and poly, are semicrystalline. |
The placement of the propylene residues is predominantly in a stereoregular isotactic manner. |
Stereoregular polylactides result from polymerization of optically pure lactides. |