Explanation

Also called average molecular weight. macromolecule compounds (except a few proteins) are homologous mixtures composed of many macromolecule chains with the same chain link structure and different molecular weights. The molecular weight M of each macromolecule is the number of its repeated chain segments. Different polymerization mechanisms and synthesis conditions make chain initiation, chain growth rate and chain termination different, even branching. Cyclization and so on, resulting in uneven number of macromolecule chains. Therefore, its molecular weight is represented by its statistical average.

Classification