Abstract A simple mass production emulsification technique was used to fabricate powder of flexible microparticles of PDMS. The insertion of a membrane/filter between the syringes in the two-syringe method allows to increase the monodispersity of the droplets collection, with sizes of a few microns. PDMS-water emulsions were made using this manual technique. The PDMS liquid droplets in the emulsions were thermally cured into spherical solid microparticles without suffering shrinkage. Analysis of the size distribution of the particles shows an acceptable degree of monodispersity. Fire-shaped cylindrical glass micronozzles were used to assess the deformability of our flexible particles as a function of the amount of curing agent used in the PDMS precursor (mixing ratio). The results are compared with rigid microparticles from the market. These flexible PDMS particles have an enormous interest in biomicrofluidic applications, especially for the production of blood particulate analogue fluids.

中文翻译：

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一种用于生产聚二甲基硅氧烷 (PDMS) 微粉柔性粉末的简单乳化技术

摘要 采用简单的批量生产乳化技术制备了PDMS柔性微粒粉体。在双注射器方法中，在注射器之间插入膜/过滤器可以增加液滴收集的单分散性，尺寸为几微米。PDMS-水乳液是使用这种手工技术制成的。乳液中的 PDMS 液滴被热固化成球形固体微粒而不会发生收缩。对颗粒尺寸分布的分析显示了可接受的单分散度。火形圆柱形玻璃微喷嘴用于评估我们的柔性颗粒的可变形性，作为 PDMS 前体中使用的固化剂量（混合比）的函数。结果与市场上的刚性微粒进行了比较。