intrinsic viscosity

of a polymer

Synonym: limiting viscosity number

The limiting value of the reduced viscosity, $η i c$ or the inherent viscosity, $η inh$ , at infinite dilution of the polymer, i.e.

$η = lim c → 0 η i c = lim c → 0 η inh$

Notes:

This term is also known in the literature as the Staudinger index.
The unit must be specified; $cm 3 g −1$ is recommended.
This quantity is neither a viscosity nor a pure number. The term is to be looked on as a traditional name. Any replacement by consistent terminology would produce unnecessary confusion in the polymer literature. Synonymous with limiting viscosity number.

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.I03140.

Original PDF version: http://www.iupac.org/goldbook/I03140.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 The PDF version is out of date and is provided for reference purposes only.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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