For this reason, the molecular weight of a polymer is reported using averages. These averages are intended to describe the distribution of molecular weight values for the polymer chains. Three different molecular
weight averages are commonly used to provide information about polymers. These are the number average molecular weight (Mn), weight average molecular weight (Mw)and viscosity average molecular
weight. In addition, several other averages are used to lesser extents including the Z average molecular weight (Mz) and the Z+1 average molecular weight (Mz+1).
Jordi Labs excels at testing materials for the various molecular weight averages that are commonly used to provide information about polymers. For more information on molecular weight testing, please see our GPC Testing section.
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