For this study, a series of isoprenol ether (IPEG) based PCE superplasticizers with specially designed molecular architectures (molecular weight, side chain length, anionicity) was successfully synthesized. All synthesized PCEs exhibited high macromonomer conversion rates as well as relatively low PDIs indicating high quality. Dispersing efficiency of the synthesized IPEG PCEs was captured via spread flow and shear-dependent rheology tests in AAS or OPC pastes. It was found that in AAS pastes all polymers perform as highly effective superplasticizers and require extremely low dosages (~0.05%). Whereas, none of the PCE polymers prepared could provide fluidity in OPC, even at high dosages (e.g. 0.3%). For a mechanistic understanding, the interaction between the polycarboxylate superplasticizers and AAS and OPC was investigated via adsorption and zeta potential measurements. It was concluded that all IPEG PCE samples produced typical Langmuir adsorption curves on AAS pastes, but exhibited linear relationships in cement pastes which signifies precipitation of these PCEs from the pore solution. The study highlights the disparity in performance of specific superplasticizers in different binder systems resulting from their different surface chemistry. Specific molecular motifs are required to address these differences in surface compositions at the atomistic level.

在本研究中，成功​​合成了一系列具有特殊设计的分子结构（分子量、侧链长度、阴离子性）的异戊二烯醇醚 (IPEG) 基 PCE 减水剂。所有合成的 PCE 都表现出高大分子单体转化率以及相对较低的 PDI，表明高质量。合成的 IPEG PCE 的分散效率是通过在 AAS 或 OPC 糊剂中的扩散流动和剪切相关流变学测试来捕获的。研究发现，在 AAS 糊剂中，所有聚合物都可以作为高效减水剂使用，并且需要极低的剂量 (~0.05%)。然而，即使在高剂量（例如 0.3%）下，所制备的 PCE 聚合物都不能在 OPC 中提供流动性。对于机械的理解，通过吸附和 zeta 电位测量研究了聚羧酸减水剂与 AAS 和 OPC 之间的相互作用。得出的结论是，所有 IPEG PCE 样品在 AAS 膏体上产生典型的朗缪尔吸附曲线，但在水泥膏体中表现出线性关系，这表明这些 PCE 从孔隙溶液中沉淀。该研究强调了特定超塑化剂在不同粘合剂体系中由于其不同的表面化学性质而导致的性能差异。需要特定的分子基序来解决原子水平上表面组成的这些差异。但在水泥浆中表现出线性关系，这表明这些 PCE 从孔隙溶液中沉淀出来。该研究强调了特定超塑化剂在不同粘合剂体系中由于其不同的表面化学性质而导致的性能差异。需要特定的分子基序来解决原子水平上表面组成的这些差异。但在水泥浆中表现出线性关系，这表明这些 PCE 从孔隙溶液中沉淀出来。该研究强调了特定超塑化剂在不同粘合剂体系中由于其不同的表面化学性质而导致的性能差异。需要特定的分子基序来解决原子水平上表面组成的这些差异。