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Determination of Low Amounts of Carboxylate in Polyacrylamide Using FT-IR

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The concentration of polymer carboxylate groups in polyacrylamide can be critical when these polymers are used in the petroleum industry for improved oil recovery applications. Several techniques have been used to measure the relative amounts of carboxylate and amide groups in the polymer. Comparisons of results obtained with the use of titration, colorimetric analysis, elemental analysis, infrared and 13C NMR spectroscopy for this analysis have appeared in the literature. The 13C NMR technique is interesting because it gives a sequence distribution of carboxylate groups as well as their concentration.

Keywords: Carboxylate; Hydrolysis; Infrared spectroscopy; Polyacrylamide

Document Type: Short Communication

DOI: http://dx.doi.org/10.1366/0003702904417887

Affiliations: Marathon Oil Company, 7400 South Broadway, Littleton, Colorado 80122

Publication date: November 1, 1990

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