Print your membrane: Rapid prototyping of complex 3D-PDMS membranes via a sacrificial resist
Print your membrane: Rapid prototyping of complex 3D-PDMS membranes via a sacrificial resist
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DOI：
10.1016/j.memsci.2014.12.040
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发表时间：
2015-03-15
影响因子：
9.5
通讯作者：
Wessling, Matthias
中科院分区：
文献类型：
--
作者：
Femmer, Tim;Kuehne, Alexander J. C.;Wessling, Matthias
聚二甲基硅氧烷是一种半透明的硅树脂材料，存在于大多数芯片实验室设备中。在膜技术中，聚二甲基硅氧烷为各种应用提供了分离屏障，例如充氧、蒸汽回收和纳米过滤。硅和交联剂的易于使用的组合及其特性使其广泛适用于二维器件几何形状。在这里，我们开发了一种新的牺牲光刻技术，使用快速原型制作三维膜的几何形状。三维PDMS膜用于气液接触。膜的几何形状是基于三周期的最小表面TPMS结构，这是无法通过目前可用的膜制造方法。新型膜的几何形状显示上级质量传输的CO2通过PDMS到水中相比，计算流体动力学模拟的国家的最先进的中空纤维膜的相等的几何参数。此外，我们进一步推进膜的几何形状为圆柱形的接触器设备的氧合。(C)2015年由Elsevier B.V.出版
Polydimethylsiloxane is a translucent silicone material present in most lab-on-a-chip devices. In membrane technology, polydimethylsiloxane provides a separation barrier for various applications such as oxygenation, vapor recovery and nanofiltration. The easy-to-use combination of silicon and crosslinker and its properties make it widely applicable for two-dimensional device geometries. Here we develop a new sacrificial lithography technique to produce three-dimensional membrane geometries using rapid prototyping. The three-dimensional PDMS membranes are applied for gas-liquid-contacting. The membrane geometries are based on triple-periodic minimal surface TPMS structures, which are inaccessible via currently available membrane fabrication methods. The novel membrane geometries display superior mass transport of CO2 through PDMS into water compared with computational fluid dynamics simulations of state-of-the-art hollow-fiber membranes of equal geometry parameters. In addition, we further advance the membrane geometry to a cylindrical shaped contactor device for oxygenation. (C) 2015 Published by Elsevier B.V.