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Smart polymeric membranes with adjustable pore size

A synthetic membrane prepared by crosslinking two different organic polymers is reported. The porosity of this membrane can be adjusted at will, simply by changing the time the membranes are immersed in a warm liquid at 60°C. The pore size of this membrane can be adjusted from 1 micron to nearly 50 microns, allowing to cover a wide range of potential applications. The pore size shows a periodic behavior with the immersion time.