离子选择电极法测定聚羧酸盐的钙结合能力  

Determination of the Calcium Binding Capacity of Polycarboxylates with Ion Selective Electrode

作　　者：陈志萍[1] 陆用海[2] 陈丽 

机构地区：[1]中北大学化学工程系,山西太原030051 [2]中国日用化学工业研究院,山西太原030001 [3]西山煤矿高新技术产业区,山西太原030053

出　　处：《山西化工》2005年第2期29-32,共4页Shanxi Chemical Industry

摘　　要：应用离子选择电极法和浊度分析法测定了几种聚羧酸盐的钙结合能力,并考察了离子强度调节剂(ISA)对测定结果的影响。研究表明:随着洗涤助剂浓度的增大,钙离子结合量增大,在一定分子量范围内不同分子量的聚羧酸盐与钙离子的结合能力相近,且随着分子量的增大,聚合物量不足时会出现沉淀。离子强度调节剂会降低助剂与钙离子的结合能力。The ability of binding calcium of polycarboxylates and the effect of ISA on the test were investigated with the method of ion selective electrode and turbidity. The results showed that with the increasing of concentration of polycarboxylates, the quantity of these additives combined with calcium was raised. The ability of binding calcium of polycarboxylates with different molecular weight was identical and precipitate can be seen when molecular weight was high. The capacity of these additives with calcium was affected by ISA.

关 键 词：离子选择电极 聚羧酸盐 钙结合能力 

分 类 号：TQ317.5[化学工程—高聚物工业]