Functional Group Influence of Similarly Charged Polymer Latex on OPC Hydration: Carboxylate Versus Sulfonate Groups
Schreiber J, Wang J, Kong X, Jansen D (2026)
Publication Type: Journal article
Publication year: 2026
Journal
Book Volume: 109
Article Number: e71163
Journal Issue: 8
DOI: 10.1111/jace.71163
Abstract
The influence of dialyzed styrene-acrylate copolymers with similar charge, but different functional groups—carboxylate and sulfonate—on the hydration of ordinary Portland cement (OPC), alite, and a synthetic cement system was investigated. The retardation and depression mechanism by polymer particles could be clarified by combining heat flow calorimetry, in situ x-ray analysis, Cryo-SEM images, and pore solution analysis of both filtered and unfiltered solutions. Adsorption is the main contributor to the retarding effect, and ettringite precipitation is the main mitigating factor. Complexation is a side effect of adsorption processes but does not contribute in a significant way to the hydration reaction delay. Sulfonate-bearing styrene-acrylate copolymers retard more severely compared to carboxylate-bearing copolymers due to their lower affinity for Ca2+-mediated adsorption and consequently slower consumption from the pore solution. This results in a longer period of ettringite growth suppression and thereby delays the onset of the silicate reaction.
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APA:
Schreiber, J., Wang, J., Kong, X., & Jansen, D. (2026). Functional Group Influence of Similarly Charged Polymer Latex on OPC Hydration: Carboxylate Versus Sulfonate Groups. Journal of the American Ceramic Society, 109(8). https://doi.org/10.1111/jace.71163
MLA:
Schreiber, Jakob, et al. "Functional Group Influence of Similarly Charged Polymer Latex on OPC Hydration: Carboxylate Versus Sulfonate Groups." Journal of the American Ceramic Society 109.8 (2026).
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