SynopsisPolyacrylamides can be readily characterized using techniques such as IR spectroscopy, 'QNMR, elementary analysis, TGA, and x-ray diffraction. The first three techniques can also be used quantitatively to measure the degree of hydrolysis of the polymers, without the need to know accurately the weight of the sample. "he presence of inorganic salts, such as NaaO,, Na4(C0&S04, and Na,C03, is readily detected via IR or wide-angle x-ray diffraction. No evidence of crystallinity is found in the samples studied.
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