Preparation of polyvinylamine from polyacrylamide: a reinvestigation of the hofmann reaction
Preparation of polyvinylamine from polyacrylamide: a reinvestigation of the hofmann reaction
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DOI：
10.1002/macp.1993.021940703
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发表时间：
1993-07
影响因子：
2.5
通讯作者：
A. E. Achari;X. Coqueret;A. Lablache-Combier;C. Loucheux
中科院分区：
文献类型：
--
作者：
A. E. Achari;X. Coqueret;A. Lablache-Combier;C. Loucheux
重新研究了聚丙烯酰胺的Hofmann改性以生成乙烯胺均聚物或共聚物，以确定一个在聚合物化学中具有巨大潜在兴趣的过程的真实范围。调整了次氯酸钠和低温(0℃)浓氢氧化钠处理的条件，以避免或限制侧链反应基团之间的副反应。探索了较宽范围的次氯酸钠与初始酰胺基团(0，05<；α<；1，10)的初始摩尔比a。报道的方法允许以极高的产率制备乙烯胺含量可控的水溶性聚合物。
The Hofmann modification of polyacrylamide to yield vinylamine homo- or copolymers was reinvestigated in order to determine the real scope of a procedure of great potential interest in polymer chemistry. The conditions of the treatment by sodium hypochlorite followed by concentrated sodium hydroxide at low temperature (0 o C) were adjusted to avoid or to limit side-reactions between pendant reactive groups. A broad range of initial mole ratio a of sodium hypochlorite per initial amide function (0,05<α<1,10) was explored. The reported procedure allows to prepare in excellent yield water-soluble polymers of controlled vinylamine content