Abstract In this study, we report the synthesis, characterization and performance of organic-inorganic hybrid (OIH) cementitious nanocomposites. OIH was synthesized by the insertion of polymer latex particles in the structure of clay nanoplates. Polymer latex particles were prepared by the polymerization of three different organic monomer comprising styrene monomer (St), 2-ethyl hexyl acrylate (EHA), and methacrylic acid (MAA). Poly(St/EHA/MAA) was prepared by a semi-continuous emulsion polymerization process. The prepared OIH was used to modify the cement paste properties. For the fabrication of latex structure various composition of methacrylic acid as a functional monomer was examined. The effect of the variety of the percentage of MAA on latex composition, and also the OIH to cement ratios were optimized. The optimum conditions were applied to the fabrication of nanoclay based blends. The effects of OIH onto the cement paste properties were evaluated by measuring of the compressive and flexural strength analyses. The obtained results showed that the best composition in cementitious matrix was related to the sample of OIH namely CP565, in which comprises of five percent nanoclay. Also FT-IR, XRD, and SEM analyses were performed to exactly identify the effects of OIH onto the cementitious matrix properties.

中文翻译：

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添加低比例纳米粘土/乳胶纳米复合材料对胶凝材料力学和形态性能的研究

摘要 在这项研究中，我们报告了有机-无机杂化 (OIH) 胶凝纳米复合材料的合成、表征和性能。OIH 是通过在粘土纳米板的结构中插入聚合物胶乳颗粒来合成的。聚合物胶乳颗粒通过三种不同的有机单体聚合制备，包括苯乙烯单体 (St)、丙烯酸 2-乙基己酯 (EHA) 和甲基丙烯酸 (MAA)。聚（St/EHA/MAA）是通过半连续乳液聚合工艺制备的。制备的 OIH 用于改进水泥浆的性能。为了制造胶乳结构，检查了作为功能单体的甲基丙烯酸的各种组合物。优化了 MAA 百分比对胶乳组成以及 OIH 与水泥比率的影响。将最佳条件应用于纳米粘土基混合物的制备。OIH 对水泥浆特性的影响是通过测量抗压强度和抗弯强度分析来评估的。所得结果表明，胶凝基质中的最佳成分与 OIH 样品 CP565 相关，其中包含 5% 的纳米粘土。还进行了 FT-IR、XRD 和 SEM 分析，以准确确定 OIH 对水泥基体性能的影响。