AMPHOTERIC POLYELECTROLYTES .1. 2-VINYLPYRIDINE-METHACRYLIC ACID COPOLYMERS
AMPHOTERIC POLYELECTROLYTES .1. 2-VINYLPYRIDINE-METHACRYLIC ACID COPOLYMERS
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DOI：
10.1021/ja01122a046
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发表时间：
1952-01-01
影响因子：
15
通讯作者：
MORAWETZ, H
中科院分区：
文献类型：
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作者：
ALFREY, T;MORAWETZ, H
制备了3种2-乙烯基吡啶与甲基丙烯酸共聚物。它们可溶于某些有机溶剂和超过临界中和度的酸或碱水溶液。研究了其中一种共聚物的稀溶液粘度行为。在酸性溶液中，聚乙烯吡啶的滴定和粘度行为与碱性溶液中聚甲基丙烯酸的滴定和粘度行为相似。共聚物的行为表明它们在等电点是不带电的，而不是偶极离子。这可能是由于吡啶基团的弱碱性所致。
Three copolymers of 2-vinylpyridine and methacrylic acid were prepared. These were soluble in some organic solvents and in aqueous acid or base solutions above a critical degree of neutralization. Dilute solution viscosity behavior of one of the copolymers was studied. Both titration and viscosity behavior resembled, in acid solution, that of polyvinylpyri-dine and, in basic solution, that of polymethacrylic acid. The behavior of the copolymers indicates that they are un-charged, rather than dipolar, ions at their isoelectric points. This is probably dueto the weak basicity of the pyridine group.