Influence of the PH Value of Comb-Shaped Polymer on the Adsorption between the Polymer and Ca2+ Ions

Abstract:

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Comb-shaped hyper-branched polycarboxylate admixture polymers, both the water-reducing-type JS and slump-retaining-type BT, were prepared, and their adsorption characteristics with Ca2+ ions were studied by conductivity loss experiments. The results indicated that, both the water-reducing-type JS and slump-retaining-type BT, would generate certain electrical conductivity loss in CaCl2 aqueous solutions, suggesting that there was some close adsorption between the polymer and Ca2+ ions, the adsorption was closely related with the pH value of the polymers, the neutral and alkaline samples neutralized by NaOH show an higher adsorption than that non-neutralized. The adsorption was achieved by the strong interaction between carboxylic acid groups in the polymer backbones and Ca2+ ions (rather than Cl- ions)

Info:

Periodical:

Advanced Materials Research (Volumes 287-290)

Edited by:

Jinglong Bu, Pengcheng Wang, Liqun Ai, Xiaoming Sang, Yungang Li

Pages:

626-631

DOI:

10.4028/www.scientific.net/AMR.287-290.626

Citation:

G. R. Duan et al., "Influence of the PH Value of Comb-Shaped Polymer on the Adsorption between the Polymer and Ca2+ Ions", Advanced Materials Research, Vols. 287-290, pp. 626-631, 2011

Online since:

July 2011

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Price:

$35.00

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