Polymer resin nuclear magnetic resonance

As shown in the infrared absorbance spectrum of the condensation polymer (See Fig. 1), bands characteristic of absorbance of the urea resin at 3,400 cm-1, 3,000 cm-1, 1,680 cm-1, 1,540 cm-1, 1,380 cm-1, 1,100 cm-1, 1,020 cm-1, 780 cm-1, and characteristic absorbance of acrylami demethyl base at 800 cm-1 are present judging from this data, it is considered that N-methylacrylamide is connected with the end group of urea resin main chains and the imino group. The nuclear magnetic resonance (See Fig. 2) spectrum of the oligomer shows a resonance value of 6.48 ppm based on CH2= and a resonance value of 5.74 ppm based on -CH=. 

On page 25 of the November 2001 issue of Adhaesion, Kleben Dichten, the nuclear magnetic resonance contact technique was introduced as a new sort of method for non-destructive characterisation of polymers. This article uses examples from the area of epoxy resins and thick-layer bondings to give an impression of typical, potential applications for this new non-destructive testing method. 2 refs. 

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