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Détermination de la viscosité intrinsèque de solutions de polymères par une simple détermination de la viscosité
Author(s) -
Solomon O. F.,
Ciutǎ I. Z.
Publication year - 1962
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1962.070062414
Subject(s) - intrinsic viscosity , viscosity , physics , thermodynamics , extrapolation , polymer , chemical solution , polymer chemistry , chemistry , stereochemistry , mathematics , nuclear magnetic resonance , mathematical analysis
By studying the molecular weights of various solutions of cis ‐1,4‐polyisoprene the authors arrived at the formula \documentclass{article}\pagestyle{empty}\begin{document}$$\left[ \eta \right] = \sqrt {2/c} \sqrt {\eta _{sp} - {\rm l}n\eta } _{rel} $$\end{document} which allowed the calculation of the intrinsic viscosity of the polymer solutions by a single viscosity determination. The formula was verified for different systems of polymer–solvent and the values are in accord with those obtained by extrapolation. An operating concentration of about 0.2% is recommended.