segment phases and crystallinity of soft segments increase by increase the ether change extender BDA in polymer structure. The soft area of polyurethane polymer is made of Polyol Due to enhancement in free volume, gas permeation increases corresponding...

In this study, the effect of silica nanoparticles on the gas permeation properties of polyether-based

polyurethane membrane was investigated. Polyether-based polyurethane was synthesized by bulk twostep

polymerization of polypropylene...

to characterize the CA and CA/silica nanocomposite membranes. Gas permeation experiments showed an increase in the permeability of CO2 from 6.32 to 7.3 barrer and a reduction in the permeability of N2 from 0.18 to 0.09 barrer with the increment in silica content...

In this study, the effects of various solvents on the structure and permeation properties of polysulfone–silica nanocomposite membranes were investigated. Silica nanoparticles were prepared by the sol–gel method through ...

.% water, resulted in completely disappearing of macrovoids. Gas permeation test results showed that by addition of solvent into the coagulation bath, H2/CH4 and H2/N2 permselectivities) reduced dramatically from 46.3 to 16.1 and 51.0 to 18.5, respectively...

In this study, mixed matrix membranes (MMMs) were prepared using commercially available poly(ether-b-amide) (Pebax2533) as polymer matrix and organically modified montmorillonite (OMMt) as filler with the aim of investigating their gas permeation...

PES/Pebax and PEI/Pebax composite membranes were prepared by coating the porous PES and PEI substrate membranes with Pebax-1657. The morphology and performance of the prepared membranes were investigated by SEM and CO2 and ...

status of crystal intergrowth on the surface. The zeolite membranes were characterized by XRD,

TGA, SEM, TEM and single gas permeation. The XRD pattem showed peaks co*esponding to

the specific peaks of ZSM-5 zeolite. The morphology of synthesized...

In this study, the effect of film preparation conditions on the gas permeation properties of polyethylene (PE) and ethylene vinyl acetate (EVA) films (containing 18 and 28wt% vinyl acetate) was investigated. Film blowing and phase inversion methods...