Abstract In this study, a series of HPEG PCE polymers with different anionic charge density and side chain lengths was synthesized via free-radical copolymerization from acrylic acid and α-methallyl poly (ethylene glycol) ether (HPEG) as macromonomer. The resulting PCE polymers were characterized via Size Exclusion Chromatography (SEC) and anionic charge titration. Thereafter, a correlation between their molecular structures and dispersing effectiveness was established for alkali-activated slag. A broad variety of HPEG PCE polymers was found to work in the alkali-activated slag (AAS) system. Finally, the working mechanism for best performing polymer was investigated via adsorption measurements. It was concluded that HPEG PCEs of high anionicity, high Mw and short side chain length adsorb particularity high amounts on slag, thus providing enhanced dispersion capacity as compared to other HPEG polymers.

中文翻译：

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HPEG基聚羧酸减水剂在碱活化渣中的分子设计和增塑效果研究

摘要 本研究以丙烯酸和α-甲基烯丙基聚乙二醇醚(HPEG)为大分子单体，通过自由基共聚反应合成了一系列具有不同阴离子电荷密度和侧链长度的HPEG PCE聚合物。所得的 PCE 聚合物通过尺寸排阻色谱 (SEC) 和阴离子电荷滴定进行表征。此后，建立了碱活化渣的分子结构和分散效果之间的相关性。发现多种 HPEG PCE 聚合物可用于碱活化炉渣 (AAS) 系统。最后，通过吸附测量研究了性能最佳的聚合物的工作机制。得出的结论是，高阴离子性、高 Mw 和短侧链长度的 HPEG PCE 在炉渣上吸附了大量的特殊性，