Abstract The dispersive action of synthesized comb-like copolymers including phosphonated or diphosphonated functions has been investigated using rheology and stability measurements. These investigations were performed by using calcite suspensions able to mimic the early-age behavior of cement paste. In addition, adsorption measurements were conducted to relate the adsorbed amount of copolymer to the effects on dispersion. The effectiveness of the studied copolymers was evaluated in different ionic media. It appears that diphosphonated structures with the shortest chain length are the most effective even in the context of ionic competition phenomenon.

中文翻译：

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二膦酸化梳状共聚物作为悬浮分散剂的合成及其对离子竞争现象的抵抗力

摘要 已使用流变学和稳定性测量研究了合成的包含膦酸化或二膦酸化功能的梳状共聚物的分散作用。这些研究是通过使用能够模拟水泥浆早期行为的方解石悬浮液进行的。此外，进行吸附测量以将共聚物的吸附量与对分散的影响联系起来。在不同的离子介质中评估了所研究共聚物的有效性。即使在离子竞争现象的背景下，具有最短链长的二膦酸结构似乎也是最有效的。