Research Abstracts

Compact and uniform MFI layers were synthesized on seed coated supports. Seeding improved the membrane performance and yielded good quality MFI membranes. n-/i-C4H10 selectivity

Composite gas separation membranes with a 0.1–3 mm thick film of Hyflon AD 60X on a porous hollow fibre ultrafiltration membrane support of amorphous poly(ether ether ketone), were prepared. The influence of the coating conditions on the film thickness and on the pure gas transport properties was st

The surface morphology and performance of modified and unmodified PPO membranes were examined in addition of different nonsolvent additives. The final morphologies of the membranes changed according to the type of casting nonsolvent; thus, their transport properties were also affected by the paramet

• Imide-containing poly(amic acid)s with oxazinone amic acid groups can be used for two membrane groups preparation; they are PI-PAA and PBOI. • Gas permeability of N2, O2, CO2 and H2 through both PI-PAA and PBOI homogeneous membranes increases in the following order: polymer-metal complex < homopol

The trend observed in desorption data is not similar to the trends of water and ethylacetate fluxes obtained from pervaporation experiments in our previous work [11]. This is caused by that while only sorption phenomena is effective in desorption study, diffusion is also effective in pervaporation.

The permeation and separation performances of PC were examined in relation to different preparation parameters. The morphologies of the final structures of the PC membranes changed according to the initial PEG concentration and molecular weight, the type of casting method, the casting solvent, the P

Super-hydrophobic membranes were manufactured by using two per-fluorinated polymers such as PVDF and Hyflon AD. The combination of controlled structure and supra-molecular chemistry made these membranes ideal interfaces to be used in membrane contactors. Super-hydrophobic per-fluorinated membranes w

It has been shown that cross-linked copolyimides are very stable materials. They can be used for aromatic/aliphatic mixtures up to 150° C with an aromatic feed concentration of around 30%. By variation of the cross-linking agent it was shown in pervaporation experiments with a 5 component mixture th