Thermally-induced phase separation (TIPS) is based on quenching
the polymer solution belowthe solvent's freezing point (Tk) and inducing
liquid–liquid separation (Fig. 2). Two phases are formed: a polymerrich
phase and a polymer-poor phase. The polymer-rich phase solidifies,
whilst the polymer-poor phase crystallises. The formed crystals are removed,
leaving a highly porous structure (more than 90%