利用微流控技术实现了毫米量级多元丙烯酸酯(TMPTA)空心泡沫微球的制备。通过对微流体通道的设计与流场分析, 获得了具有最佳流场均匀性分布的Y型微流控通道；利用软模板技术实现了Y型通道微流控芯片的组装, 并开展了TMPTA泡沫微球的结构控制研究。研究结果表明: 在模板尺寸一定的情况下, 能够通过调节各相流速实现对微球壁厚和直径的有效控制；微球壳层密度可通过控制单体浓度来调节。通过优化控制条件, 实现了密度20~100 mg/cm3、直径大于3 mm的空心泡沫微球的制备。

Foam shells with millimeter size were fabricated by microfluidic technology. By design and discussion, Y model channel has the best fluid velocity distribution uniformity in different channels. Y model microfluidic chip was obtained by soft template technology, with which the control conditions of TMPTA are discussed. Results show that the diameter and shell thickness can be controlled by adjusting the fluid velocity in different channels. Furthermore, the density of foam shell is dominated by concentration of reaction monomer. The foam shells with density of 20-100 mg/cm3 and diameter of more than 3 mm were obtained by optimizing the control conditions.