High-performance carboxylated polymers of intrinsic microporosity (PIMs) with tunable gas transport properties

Peer reviewed: YesNRC publication: Ye

Gas transport behavior of mixed-matrix membranes composed of silica nanoparticles in a polymer of intrinsic microporosity (PIM-1)

Recently, high-free volume, glassy ladder-type polymers, referred to as polymers of intrinsic microporosity (PIM), have been developed and their reported gas transport performance exceeded the Robeson upper bound trade-off for O2/N2 and CO2/CH4. The present work reports the gas transport behavior of PIM-1/silica nanocomposite membranes. The changes in free volume, as well as the presence and volume of the void cavities, were investigated by analyzing the density, thermal stability, and nano-structural morphology. The enhancement in gas permeability (e.g., He, H2, O2, N2, and CO2) with increasing filler content shows that the trend is related to the true silica volume and void volume fraction.Peer reviewed: YesNRC publication: Ye

Physical aging and mixed-gas transport properties of microporous polymers for gas separation applications

Peer reviewed: YesNRC publication: Ye

Linear high molecular weight ladder polymer via fast polycondensation of 5,5',6,6'-tetrahydroxy-3,3,3',3'-tetramethylspirobisindane with 1,4-dicyanotetrafluorobenzene

Peer reviewed: YesNRC publication: Ye

Mixed-gas transport properties of microporous polymers

Peer reviewed: YesNRC publication: Ye

Flow behavior and heat transfer of molten steel in a two-strand tundish heated by plasma

Tundish plasma heating could achieve constant temperature and low superheat pouring of molten steel, which is conductive for improving the efficiency of continuous casting, enhancing the internal quality of slab. The flow behavior and heat transfer of molten steel in tundish heated by plasma are essential for understanding this process. In the present study, numerical and physical simulation were conducted to investigate the temperature filed and flow characteristics of molten steel in two-strand tundish heated by plasma with different plasma heating powers. Based on the conducted simulation, it was stated that the temperature field of molten steel in tundish was significantly improved by plasma heating. The outlet temperature in 500 kW was increased by 3.05 K compared with non-plasma heating. The physical simulation demonstrated that the dead volume of tundish was reduced by 18.89% in 6 kg/h compared with non-plasma heating. The flow characteristics in the tundish with plasma heating were better than that without plasma heating. With an increase in heating power, the effect of plasma heating was considerably improved

Gas transport properties of intrinsically microporous polymers

Peer reviewed: YesNRC publication: Ye

Polymers of intrinsic microporosity containing trifluoromethyl and phenylsulfone groups as materials for membrane gas separation

Peer reviewed: YesNRC publication: Ye

Carboxylated polymers of intrinsic microporosity (PIMs) for gas separation

Peer reviewed: NoNRC publication: Ye