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通过光引发游离基共聚合反应,测定了甲基丙烯酸和丙烯酰胺在十种溶剂中的竞聚率,并且分别测定了甲基丙烯酸和丙烯酰胺在八种溶剂中的红外吸收光谱.结果表明:甲基丙烯酸-丙烯酰胺共聚过程具有强烈的溶剂效应,随着溶剂极性增大r_1增大,而r_2减小.单体的红外吸收特征峰vc=o 或vc=c 受溶剂极性的影响发生明显的位移.lgr 值与vc=o 或vc=c 之间有较好的线性相关.
The radical copolymerization reaction was initiated by light and the reactivity ratio of methacrylic acid and acrylamide in ten solvents was measured, and the infrared absorption spectra of methacrylic acid and acrylamide in eight solvents were determined respectively. The results showed that: Methacrylic acid-acrylamide copolymerization process has a strong solvent effect, with increasing solvent polarity r_1 increases, and r_2 decreases. The monomer infrared absorption peak vc = o or vc = c by the polarity of the solvent Significant displacement occurs, with a good linear correlation between the value of lgr and vc = o or vc = c.