109 Molecular Weight
Molecular weight of a polymer is defined as sum of the atomic weight of each of the atoms in the molecules which are present in the polymer. It indicates the average length of the bulk resin’s polymer chains.
Normally, the molecular weight of a polymer does not have a single value, since different chains will have different lengths and different numbers of side branches. There will therefore be a distribution of molecular weights, so it is common to calculate the average molecular weight of the polymer. The average molecular weight of a polymer can be determined using a variety of techniques, such as gel permeation chromatography, light-scattering measurements, and viscosity measurements. ...
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