Encyclopedic Dictionary of Polymers

2011 Edition
| Editors: Jan W. Gooch

Weight-Average Molecular Weight

  • Jan W. Gooch
Reference work entry
DOI: https://doi.org/10.1007/978-1-4419-6247-8_12768

A polymer molar mass average which is the mean value of the weight distribution of molecular sizes, defined a Mw = ∑ NiMi2/∑ NiMi = ∑ wiMi/∑ wi. Where Ni, Mi and wi are the number of molecules, the molar mass and the total with of the molecular species.

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Jan W. Gooch
    • 1
  1. 1.AtlantaUSA