It was proved that the modified PVA has ortho-nitrogen radicals by molecular structure analysis through infrared spectrum.
通过红外光谱分析了改性多元醇防塌剂的分子结构，证明阳离子化反应引入了正氮基团；
Under the protection of nitrogen the reaction system does not induce polymerization of acrylamide indicating no generation of free radicals.
在氮气保护下，反应不能引发丙烯酰胺聚合，说明在反应中没有自由基产生。
Under the protection of nitrogen, the reaction system does not induce polymerization of acrylamide, indicating the generation of no free radicals.
在氮气保护下，反应不能引发丙烯酰胺聚合，说明在反应中没有自由基产生。
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