Benito-Lopez Fernando, Antoñana-Díez Marta, Curto Vincenzo F, Diamond Dermot, Castro-López Vanessa
CIC microGUNE, Arrasate-Mondragón, Spain.
Lab Chip. 2014 Sep 21;14(18):3530-8. doi: 10.1039/c4lc00568f. Epub 2014 Jul 14.
This paper reports for the first time the use of a cross-linked poly(N-isopropylacrylamide) ionogel encapsulating the ionic liquid 1-ethyl-3-methylimidazolium ethyl sulphate as a thermoresponsive and modular microfluidic valve. The ionogel presents superior actuation behaviour to its equivalent hydrogel. Ionogel swelling and shrinking mechanisms and kinetics are investigated as well as the performance of the ionogel when integrated as a valve in a microfluidic device. The modular microfluidic valve demonstrates fully a reversible on-off behaviour without failure for up to eight actuation cycles and a pressure resistance of 1100 mbar.
本文首次报道了一种交联聚（N-异丙基丙烯酰胺）离子凝胶的应用，该离子凝胶包裹着离子液体硫酸乙酯-1-乙基-3-甲基咪唑鎓，用作热响应性和模块化微流控阀。与等效的水凝胶相比，该离子凝胶具有更优异的驱动性能。研究了离子凝胶的溶胀和收缩机制及动力学，以及该离子凝胶作为阀门集成在微流控装置中的性能。这种模块化微流控阀充分展示了完全可逆的开关行为，在多达八个驱动循环中无故障，耐压达1100毫巴。
