Study on the Adsorption Behavior of Ca²⁺ Ions on Comb-Like Polycarboxylate Polymers in the CaCl₂ Solution

Abstract

Using esterification-polymerization two-steps synthesis method, two kinds of comb-like polycarboxylate agents of BT and JS were synthesized by controlling acid-ester ratio. The adsorption characteristics of Ca2+ions on comb-like polycarboxylate polymers in the CaCl2solution were studied. The results indicated that the adsorption behavior was closely related to the structure of polymers, the adsorption power of JS with water-reducing structure was strong, while weak with slump loss resisting polymers BT. The adsorption behavior was also in connection with the acid-ester ratio of polymer structure, the higher the acid-ester ratio is, the greater the absorption power; On the contrary, it will be smaller.

A study of supermolecular polarization of comb-like polycarboxylate admixtures synthesized with polyoxyethylene macromolecules

“…The difference is that PC-4 consists of an acid stock solution without NaOH treatment, while PC-3 is a neutral sample of PC-4 after NaOH treatment. Their detailed preparing methods were shown in references [12][13][14][15].…”