Proton relaxation in linear poly(oxypropylene glycols)

The effect of molecular weight and polydispersity on the relaxational behaviour of linear poly(oxypropylene glycols) (POPGS) has been studied by pulse NMR spectroscopy. The length of the kinetic segment of the oligomer was determined. It is suggested that the nuclear magnetic relaxation characterist...

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Bibliographic Details
Published in:Polymer science USSR 1978, Vol.20 (2), p.309-313
Main Authors: Nazarova, I.I., Baturin, S.M., Entelis, S.G.
Format: Article
Language:English
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Summary:The effect of molecular weight and polydispersity on the relaxational behaviour of linear poly(oxypropylene glycols) (POPGS) has been studied by pulse NMR spectroscopy. The length of the kinetic segment of the oligomer was determined. It is suggested that the nuclear magnetic relaxation characteristics of binary POPG mixtures obey the additivity principle. The spectrum of correlation times of molecular motion broadens as the polydispersity of the oligomer increases.
ISSN:0032-3950
1878-268X
DOI:10.1016/0032-3950(78)90038-2