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.

Notes:

The unit must be specified; $cm 3 g −1$ is recommended.
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.

Source:

Purple Book, p. 63

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Cite as:
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: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook.

Last update: 2014-02-24; version: 2.3.3.

DOI of this term: https://doi.org/10.1351/goldbook.I03033.

Original PDF version: http://www.iupac.org/goldbook/I03033.pdf. The PDF version is out of date and is provided for reference purposes only. For some entries, the PDF version may be unavailable.

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