Solubility control
Controlling the properties of spaces inside a membrane will change the way each chemical in a mixture interacts with the spaces as the mixture flows through the membrane.
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Solubility-selective membranes usually refer to membranes in which selectivity is governed by the solubility of the penetrants in the membranes. Traditionally, solubility-selective membranes present high solubility for condensable penetrants such as CO2 and hydrocarbons, i.e. rubbery polymers (e.g. polydimethylsiloxane, PDMS) and glassy polymers with high free volume. SynHiSel researchers are leading the development of high free-volume glassy PIM polymers. Here we propose an ambitious plan to develop solubility-driven membranes in a broader context – synthetic membranes with sub nanometre pores and specific host-guest interaction sites that enable the precisely tuned selective adsorption and diffusion of molecules and ions, ultimately, to achieve single-species selectivity
