Preparation and determination of hydroximic polyacrylamide

来源期刊：中南大学学报(英文版)2002年第3期

论文作者：张剑锋 胡岳华 王淀佐

文章页码：177 - 180

Key words：polyacrylamide; hydroximic acid; hydroxamic acid; substitution degree

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 C7-9alkyl hydroximic acid, the substitution degree ofHPAMwas determined by selectingoctyl 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 degreewas 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.