Abstract
A new kind of polyacrylamide derivate, hydroximic polyacrylamide (HPAM), was prepared from polyacrylamide (PAM) with hydroxylamine hydrochloride in KOH/alcohol solution. Based on colorimetric method in the measurement of C7–9 alkyl hydroximic acid, the substitution degree of HPAM was determined by selecting octyl hydroximic acid as a primary standard substance. The effects of temperature, the amount of hydroxylamine and potassium hydroxide, and the reaction time on the reaction are discussed. HPAM with 5.78% substitution of degree was acquired by optimizing the reaction conditions. IR spectra revealed that tautomerism appears in the HPAM, and that HPAM exists in both the forms of hydroxamic type and hydroximic type, and the latter type can easily lead to the forming of intramolecular hydrogen bond.
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Foundation item: The National Key Basic Research Program (G1999064091)
Biography of the first author: ZHANG Jian-feng, doctorate candidate, born in 1968, majoring in molecule design and synthesis of flotation reagents.
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Zhang, Jf., Hu, Yh. & Wang, Dz. Preparation and determination of hydroximic polyacrylamide. J Cent. South Univ. Technol. 9, 177–180 (2002). https://doi.org/10.1007/s11771-002-0022-2
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DOI: https://doi.org/10.1007/s11771-002-0022-2