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

Commercial and laboratory samples of polyoxypropylenepolyols were studied by 1 H 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 gr...

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Veröffentlicht in:	Russian journal of applied chemistry 2010-06, Vol.83 (6), p.1037-1043
Hauptverfasser:	Makhiyanov, N., Safin, D. Kh, Khachaturov, A. S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemistry Chemistry and Materials Science Chemistry/Food Science Industrial Chemistry/Chemical Engineering Macromolecular Chemistry and Polymeric Materials
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	Commercial and laboratory samples of polyoxypropylenepolyols were studied by 1 H 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 1 H NMR data are compared to the data obtained by chemical methods and gel permeation chromatography.
ISSN:	1070-4272 1608-3296
DOI:	10.1134/S1070427210060212