number-average molecular weight


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number-average molecular weight:

see molecular weightmolecular weight,
weight of a molecule of a substance expressed in atomic mass units (amu). The molecular weight may be calculated from the molecular formula of the substance; it is the sum of the atomic weights of the atoms making up the molecule.
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References in periodicals archive ?
Results were presented in a table showing number-average molecular weights, polydispersity and conversion after 5 h at 135[degrees]C.
Figure 11 shows the tan[delta]-T curves of the irregular networks made from PDMS with different number-average molecular weights.
So, it is possible to determine the number-average molecular weight of the sample.
Yu (4) used two grades of PE with identical number-average molecular weight but differing in molecular weight distribution.
However, the number-average molecular weight of PPO synthesized in the aqueous medium is only up to 13,000 and insufficient for an engineering plastic.
When the chains are terminated via both combination and disproportionation, the number-average molecular weight [bar.
The functionality (f) of the liquid rubber was calculated by multiplying the carboxyl content, expressed in equiv/g, with the number-average molecular weight.