Cook W D
Biomaterials. 1983 Apr;4(2):85-8. doi: 10.1016/0142-9612(83)90045-5.
As part of a series of investigations of dental polyelectrolyte cements, the influence of additives was studied by viscometry. At low concentrations, tartaric acid was found to exert an accelerating influence on glass ionomer cements but to retard the reaction by complex formation at high concentrations. When dissolved with the liquid component, NaF accelerated some glass ionomer cements and retarded others. NaCl was found to accelerate the zinc polycarboxylate cements, possibly through its reduction in the electrical potential between powder and liquid phases. Neutralization of the polyacids retarded the reactions but not enough to indicate that hydrogen ions were directly involved in the rate determining step.
作为牙科聚电解质粘固剂系列研究的一部分,通过粘度测定法研究了添加剂的影响。在低浓度下,发现酒石酸对玻璃离子粘固剂有加速作用,但在高浓度下会通过形成络合物而延缓反应。当与液体成分一起溶解时,氟化钠会加速一些玻璃离子粘固剂的反应,而对另一些则有延缓作用。发现氯化钠可加速聚羧酸锌粘固剂的反应,这可能是由于它降低了粉相和液相之间的电势。多元酸的中和作用会延缓反应,但不足以表明氢离子直接参与了速率决定步骤。