Membrane emulsification is a promising new technique that can be deployed as a scalable modular conduit for the consistent and continuous production of single and complex emulsions. This work reports on the development of a manufacturing platform based on membrane emulsification for the first time for microcapsule-based self-healing cementitious materials. The feasibility of single and double emulsion production with wall formation as a secondary step through UV radical polymerisation was explored using a discrete membrane emulsification dispersion cell. The operational parameters (pressure, dispersed phase flux, temperature, shear rate) were established for the specific phase characteristics (viscosity, density, interfacial tension) to achieve control of emulsion droplets and maintain a high encapsulation of core content (high payload). Microcapsules with sodium silicate core and an average diameter of ∼130 μm were produced. Microcapsules were shown to achieve high payload (∼89%). Moreover their thermal stability was characterised and their release performance in the cementitious matrix established. The results demonstrated the capability of membrane emulsification to produce microcapsules with an aqueous core for use in self-healing of cementitious materials.

膜乳化是一种很有前途的新技术，可以用作可扩展的模块化管道，用于一致和连续生产单一和复杂的乳液。这项工作首次报告了基于膜乳化的微胶囊自修复胶凝材料制造平台的开发。使用离散的膜乳化分散池探索了单乳液和双乳液生产的可行性，壁形成作为通过 UV 自由基聚合的第二步。为特定的相特性（粘度、密度、界面张力）建立操作参数（压力、分散相通量、温度、剪切速率），以实现对乳液液滴的控制并保持核心含量的高封装（高有效载荷）。μ m 产生。微胶囊被证明可以实现高有效载荷（~89%）。此外，表征了它们的热稳定性并确定了它们在水泥基体中的释放性能。结果证明了膜乳化能够产生具有水核的微胶囊，用于胶结材料的自修复。