Our Company
1 Company News
New Product Notice
Factory Photos
Research Progress
Food Additives
Pharm. Raw Materials
Mining Chemicals
Concrete Admixtures
Water Treatment Chemicals
Other Chemicals
Contact Us

A polycarboxylate as a superplasticizer for montmorillonite clay in cement: Adsorption and tolerance studies

A novel polycarboxylate superplasticizer (PCE) with a long polyoxyethylene (PEO) chain and a terminal carboxylic group was synthesized from a modified polyether (SAE-IPEG) to increase its performance in cement. The molecular structure of the PCE was characterized by infrared spectroscopy and 1 H nuclear magnetic resonance (NMR) spectroscopy. The performance of synthesized PCE in cement was studied in the absence and the presence of montmorillonite (Mmt) clay. It was found that the PCE disperses in cement uniformly without aggregation, which is different significantly from the conventional PCEs. Adsorption measurements and X-ray diffraction analysis revealed that the synthesized PCE only interacted with Mmt via surface adsorption, whereas the conventional PCEs interact with the clay through the surface adsorption and the chemical intercalation. Such dramatic change could be ascribed to the introduction of an electronegative carboxylic acid group as a terminal group into the long polyoxyethylene chain of PCE, which reduced the adsorption and enhanced tolerance of PCE on Mmt. Quoted from Arabian Journal of Chemistry (2018) 11, 747–755

























































Copyright Sure Chemical Co., Ltd. Shijiazhuang All rights reserved | www.surechemical.com