An anion exchange for separating a plurality of carbohydrates includes a negatively charged substrate particle. A base polymer layer includes a first plurality of quaternary amines. The polyalkylpolyamine polymer layer is covalently attached to the base condensation polymer layer. The polyalkylpolyamine polymer layer includes a polymeric branch structure that includes a second plurality of quaternary amines. A density of the second plurality of quaternary amines increases in a direction away from the base condensation polymer layer. The anion exchange stationary phase does not have a hydroxy group spaced apart from any one of the first or the second plurality of quaternary amines by an ethyl group.
一个用于分离多种
碳水化合物的阴离子交换包括一个带负电荷的基质颗粒。基础聚合物层包括第一组季
铵盐。聚烷基聚胺聚合物层与基础缩聚聚合物层共价结合。聚烷基聚胺聚合物层包括一个包含第二组季
铵盐的聚合支链结构。第二组季
铵盐的密度沿着远离基础缩聚聚合物层的方向增加。阴离子交换固定相没有羟基,该羟基与第一组或第二组季
铵盐中的任何一个相隔一个乙基基团。