A Study of Mechanical Properties of Polymer Composite Membranes with Various Ionic Liquids at Elevated Temperatures

Abstract

Ionic liquid/sulphonated poly(ether ether ketone) composite membranes were prepared using following ionic liquids: 1,2,3-trimethylimidazolium dimethylphosphate, 1-hexyl-3-methylimidazolium dimethylphosphate, 1-dodecyl-3methylimidazolium dimethylphosphate. For each ionic liquid/polymer pair 4 composite membranes were prepared with 10 wt.%, 20 wt.%, 30 wt.%, 40 wt.% ionic liquid content. Membranes were analyzed using strain-stress testing at various elevated temperatures up to 150 °C. Impact of temperature, ionic liquid content in membrane and structure of ionic liquids on mechanical properties of composite membrane were evaluated. It was found that temperature and ionic liquid content had highest impact on mechanical properties of composite membranes.

Recent advances in bio-inspired ionic liquid-based interfacial materials from preparation to application

“…The polymer chain entanglement of physically crosslinked ionogel is instantaneously reversible ( Sprugis et al, 2019 ), but the heat-resistance and solvent-resistance are poor, and the permanent deformation is also serious.…”

“…The IL-based supported membrane was prepared by loading ILs into membrane internal channels (Carlin and Fuller, 1997;Branco et al, 2002;Noble et al, 2011;Sasikumar et al, 2018). Compared with Frontiers in Bioengineering and Biotechnology frontiersin.org traditional supported liquid membranes, ILs with high viscosity can enhance the capillary force between ILs and the supported membrane for improving stability (Sprugis et al, 2019). At present, the reported methods for preparing the IL-infused supported membrane mainly include the impregnation method, pressure difference method, reducing viscosity by heating, and reducing viscosity by solvent.…”