Nuclear magnetic resonance ethoxylates

Pyrolysis GC becomes a much more effective tool if it is combined with mass spectroscopy. Pyrolysis GC-MS is very useful for the characterization of complex copolymers of all sorts and is a valuable supplement to infrared and nuclear magnetic resonance spectrometry for study of surfactants. Although direct pyrolysis can be used, successful pyrolysis GC of ethoxylates generally requires the addition of cleavage reagents to the sample before heating. The distinction between reaction GC and pyrolysis GC is thus blurred. 

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