Determination of the molecular weight of polyoxypropylenepolyols by 1H NMR spectroscopy

Determination of the molecular weight of polyoxypropylenepolyols by 1H NMR spectroscopy Commercial and laboratory samples of polyoxypropylenepolyols were studied by 1H NMR spectroscopy at operating frequencies of 100 and 500 MHz. Various methods depending on the solvent used were suggested for determining the equivalent weight (molecular weight of the polyether per terminal hydroxy group). The 1H NMR data are compared to the data obtained by chemical methods and gel permeation chromatography. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

Determination of the molecular weight of polyoxypropylenepolyols by 1H NMR spectroscopy

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2010 by Pleiades Publishing, Ltd.
Subject
Chemistry; Industrial Chemistry/Chemical Engineering; Chemistry/Food Science, general
ISSN
1070-4272
eISSN
1608-3296
D.O.I.
10.1134/S1070427210060212
Publisher site
See Article on Publisher Site

Abstract

Commercial and laboratory samples of polyoxypropylenepolyols were studied by 1H NMR spectroscopy at operating frequencies of 100 and 500 MHz. Various methods depending on the solvent used were suggested for determining the equivalent weight (molecular weight of the polyether per terminal hydroxy group). The 1H NMR data are compared to the data obtained by chemical methods and gel permeation chromatography.

Journal

Russian Journal of Applied ChemistrySpringer Journals

Published: Jul 24, 2010

References

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