Microfluidics has gained significant interest in recent years due to its numerous
advantages over conventional reactors. Among these are: a better volume-to-surface ratio,
efficient mass and energy transport, and the ability to integrate into larger systems, which
allows for improved control over reaction kinetics and the transfer of substances and heat.
This leads to higher yields and greater selectivity in (bio)chemical processes. Open
reactors are particularly intriguing for heterogeneous two-phase systems, as they enable
the efficient supply or removal of substrates and products during simultaneous reactions
under stationary conditions and high specific surface areas. They also support the concept
of ideal scale-up. Recently, 3D printing technology has become crucial in the fabrication
of microfluidic devices, as it allows for the precise creation of microstructures in a single
piece. These products are typically made from polymer resins, which, in some cases,
exhibit undesirable surface properties, making surface functionalization necessary for
certain applications. The combination of 3D printing and surface functionalization
enables the development of advanced and adaptable microreactors, suitable for various
applications in microfluidics, particularly in two-phase systems where high efficiency,
precision, and adaptability of reaction conditions are required.
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