This work demonstrates the fabrication of surface-textured microcapsules formed from emulsion droplets, which are stabilized by an interlocking mesh of needle-like crystals. Crystals of the small-organic-compound decane-1,10-bis(cyclohexyl carbamate) are formed within the geometric confinement of the droplets, through precipitation from a binary-solvent-dispersed phase. This binary mixture consists of a volatile solvent and nonvolatile carrier oil. Crystallization is facilitated upon supersaturation due to evaporation of the volatile solvent. Microcapsule diameter can be easily tuned using microfluidics. This approach also proves to be scalable when using conventional mixers, yielding spikey microcapsules with diameters in the range of 10–50 μm. It is highlighted that the capsule shape can be molded and arrested by jamming using recrystallization in geometric confinement. Moreover, it is shown that these textured microcapsules show a promising enhanced deposition onto a range of fabric fibers.

中文翻译：

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通过结晶织构的微胶囊

这项工作证明了由乳液液滴形成的表面纹理化微胶囊的制备，该乳液通过针状晶体的互锁网状物得以稳定。通过从二元溶剂分散相中沉淀，在液滴的几何限制范围内形成了小有机化合物癸烷1,10-双（氨基甲酸环己酯）的晶体。该二元混合物由挥发性溶剂和非挥发性载体油组成。由于挥发性溶剂的蒸发，过饱和促进了结晶。微胶囊直径可以使用微流体容易地调节。当使用常规混合器时，这种方法也被证明是可扩展的，可产生直径在10至50μm范围内的尖刺微囊。需要强调的是，胶囊形状可以通过在几何限制中使用重结晶通过堵塞来成型和阻止。此外，显示出这些带纹理的微胶囊显示出有希望的增强到一系列织物纤维上的沉积。