Super liquid-repellent gas membranes for carbon dioxide capture and heart–lung machines

Maxime Paven, Periklis Papadopoulos, Susanne Schöttler, Xu Deng, Volker Mailänder, Doris Vollmer () and Hans-Jürgen Butt ()
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Maxime Paven: Max Planck Institute for Polymer Research
Periklis Papadopoulos: Max Planck Institute for Polymer Research
Susanne Schöttler: Max Planck Institute for Polymer Research
Xu Deng: Max Planck Institute for Polymer Research
Volker Mailänder: Max Planck Institute for Polymer Research
Doris Vollmer: Max Planck Institute for Polymer Research
Hans-Jürgen Butt: Max Planck Institute for Polymer Research

Nature Communications, 2013, vol. 4, issue 1, 1-6

Abstract: Abstract In a gas membrane, gas is transferred between a liquid and a gas through a microporous membrane. The main challenge is to achieve a high gas transfer while preventing wetting and clogging. With respect to the oxygenation of blood, haemocompatibility is also required. Here we coat macroporous meshes with a superamphiphobic—or liquid repellent—layer to meet this challenge. The superamphiphobic layer consists of a fractal-like network of fluorinated silicon oxide nanospheres; gas trapped between the nanospheres keeps the liquid from contacting the wall of the membrane. We demonstrate the capabilities of the membrane by capturing carbon dioxide gas into a basic aqueous solution and in addition use it to oxygenate blood. Usually, blood tends to clog membranes because of the abundance of blood cells, platelets, proteins and lipids. We show that human blood stored in a superamphiphobic well for 24 h can be poured off without leaving cells or adsorbed protein behind.

Date: 2013
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DOI: 10.1038/ncomms3512

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