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inherent viscosity

of a polymer

Synonym: logarithmic viscosity number

The ratio of the natural logarithm of the relative viscosity, η r, to the mass concentration of the polymer, c, i.e.
η inh ≡ η ln = ln η r c
The quantity η ln, with which the inherent viscosity is synonymous, is the logarithmic viscosity number.
  1. The unit must be specified; cm 3 g −1 is recommended.
  2. These quantities are neither viscosities nor pure numbers. The terms are to be looked on as traditional names. Any replacement by consistent terminology would produce unnecessary confusion in the polymer literature.
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IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
Last update: 2014-02-24; version: 2.3.3.
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