聚醚三酰胺钠离子电极的制备和应用

Preparation and Application of Sodium Ion-Selective Electrodes Based on Polyether Trisamides

用五种合成的开链聚醚三酰胺制成了PVc膜钠离子电极,并与类似结构的ETH227电极作了比较.研究了载体结构与电极性能的关系,含有适当长度碳链的几种酰胺适于作钠电极的载体.PVC涂层玻璃膜钠电极性能良好,可用于恢复已失效的某些玻璃膜钠电极的功能.

Five non-cyclic polyether trisamides similar to ETH 227 were synthesized as carriers for PVC membrane Na^+ electrodes. The relationship between the constructions of these carriers and the performances of the electrodes are examined. The results indicate that trisamides with longer carbon chains are suitable for being used as neutral carries of ion-selective electrode. Glass Na^+ electrode coated with PVC membrane based on 1,1,1-tris [l'-(2'-oxa-4 '-oxo-5'-aza-5'-buty 1) nonyl] propane exhibits fairly good performance.