Specialty Polymeric Membranes. 13. Separation of Benzene/Cyclohexane Mixtures through Poly(Vinylidene Chloride-co-Vinyl Chloride)-graft-Poly(Butyl Methacrylate) Membranes

Interplay between grain structure and protein adsorption on functional response of osteoblasts: Ultrafine‐grained versus coarse‐grained substrates

“…Raising the TMCS and PF by two‐and‐a‐half‐fold provoked a decline of J by three‐fold, from nearly 1400 g m −2 h −1 to about 500 g m −2 h −1 . As shown in Table V and other reported results,31–35 the magnitudes of J were among the good ones. α, or selectivity, for the 1 : 1 mixture was relatively low for membranes SBR 1 and SBR 1.5 but slightly increased for SBR 2 and SBR 2.5 , not exceeding a value of 13.…”

“…Of the innumerable binary mixtures whose separations were studied by pervaporation for a matter of purification of one of the components, in Bz/Cx, Bz is industrially converted to Cx by catalytic hydrogenation, and therefore, its purification by separation is thus required. The intensive research on the pervaporative separation of this system18–43 witnesses to its peculiarity, which lies mainly on the very close boiling points of the components, 80.103°C for Bz versus 80.738°C for Cx, and on the fact that it is an azeotropic mixture.…”

Specialty polymeric membranes. XIV. Pervaporation of benzene/cyclohexane mixtures through modified polyamide membranes

“…The separation of aromatics and aliphatics into an aromatic‐rich permeate, which is employed for high‐octane‐number gasoline, and into an aromatic‐lean retentate, which is used for diesel, is one interesting membrane separation process in petroleum refining in connection with environmental issues 3. Many articles have reported on the pervaporation separation of benzene/cyclohexane mixtures, both components being top 50 chemicals,4 with synthetic polymeric membranes 5–53. As described previously,43 membrane materials for petroleum refining should be chosen from commercially available common polymers or common polymers chemically modified without complicated modification reactions because large volumes of mixtures should be treated by the prepared membrane.…”

“…As described previously,43 membrane materials for petroleum refining should be chosen from commercially available common polymers or common polymers chemically modified without complicated modification reactions because large volumes of mixtures should be treated by the prepared membrane. To this end, nylon 6,25, 27, 44, 48, 51 polyamide–polyether block copolymer,38 poly(vinyl chloride),43 poly(vinyl alcohol),45 polysulfone,47 and poly(vinylidene chloride‐ co ‐vinyl chloride)52 have been adopted as membrane materials, and the pervaporation performances of membranes from modified and unmodified polymers have been investigated.…”