01773nas a2200169   4500008004100000022001400041245011400055210006900169260011000238300001600348490000600364520104100370100001901411700002001430700002201450856013101472       2014                        eng d  a2050-748800aZIF-8@PBI-Bul composite membranes: elegant effects of PBI structural variations on gas permeation performance0 aZIF8PBIBul composite membranes elegant effects of PBI structural  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcAUG  a12962-129670 v23 a<p>The composites of metal organic frameworks (MOFs) and polymers look promising as membrane materials for gas separation, provided benefits of both the components can be shown successfully. This work shows that the structural architecture of polybenzimidazole (PBI) is highly advantageous in offering attractive gas permeation properties of its composites with MOFs. PBI-Bul and its N-substituted (methyl and 4-tert-butylbenzyl) derivatives were blended with ZIF-8. In general, homogeneous blend formation of ZIF-8 was achieved with all three polymers, as supported by SEM. Wide angle X-ray diffraction, mechanical property analysis and density measurements of the composite membranes were performed in order to understand the effects of physical blending of MOFs and polymers. Gas permeability analysis of the composite membranes revealed that the properties of MOFs as well as those of polymers arising from their structural architecture are responsible for governing the permeability and selectivity of the resulting composites.</p>1 aBhaskar, Anand1 aBanerjee, Rahul1 aKharul, Ulhas, K.  uhttps://library.ncl.res.in/content/zif-8pbi-bul-composite-membranes-elegant-effects-pbi-structural-variations-gas-permeation-001697nas a2200181   4500008004100000022001400041245012800055210006900183260011000252300001400362490000600376520092000382100002301302700001901325700002001344700002201364856012901386       2015                        eng d  a2040-336400aSelective interfacial synthesis of metal-organic frameworks on a polybenzimidazole hollow fiber membrane for gas separation0 aSelective interfacial synthesis of metalorganic frameworks on a   aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAR  a7291-72980 v73 a<p>Metal-organic frameworks (MOFs) have gained immense attention as new age materials due to their tuneable properties and diverse applicability. However, efforts on developing promising materials for membrane based gas separation, and control over the crystal growth positions on polymeric hollow fiber membranes still remain key challenges. In this investigation, a new, convenient and scalable room temperature interfacial method for growing MOFs (ZIF-8 and CuBTC) on either the outer or inner side of a polybenzimidazole based hollow fiber (PBI-BuI-HF) membrane surface has been achieved in a controlled manner. This was made possible by the appropriate selection of an immiscible solvent pair and the synthetic conditions. The growth of MOFs on the PBI-BuI-HF membrane by the interfacial method was continuous and showed an appreciable gas separation performance, conveying promise for their applicability.</p>1 aBiswal, Bishnu, P.1 aBhaskar, Anand1 aBanerjee, Rahul1 aKharul, Ulhas, K.  uhttps://library.ncl.res.in/content/selective-interfacial-synthesis-metal-organic-frameworks-polybenzimidazole-hollow-fiber-002090nas a2200253   4500008004100000022001400041245007200055210006800127260000900195300001000204490000800214520130100222653001901523653003101542653002801573653001001601100002601611700001801637700001901655700001901674700002001693700002201713856010101735       2018                        eng d  a0376-738800aZIF-8@DBzPBI-BuI composite membranes for olefin/paraffin separation0 aZIF8DBzPBIBuI composite membranes for olefinparaffin separation  cMAR   a38-450 v5493 aZIF-8 is a member of Zeolitic Imidazole Framework family having high internal surface area, the high thermo-chemical stability and ease of synthesis gained immense attention for its highly selective sieving ability. Transforming it into a membrane form and practical utility remains a challenge. Any success towards this direction would radically reduce the cost of propylene/propane separation. Present study reports use of substituted polybenzimidazole (DBzPBI-BuI) for fabrication of flexible, thus scalable composite membranes with ZIF-8 (ZIF8@DBzPBI-BuI) possessing host-guest compatibility. The membrane with 30% ZIF-8 loading showed promising propylene-propane separation (ideal selectivity of 32.7), coupled with propylene permeability of 12.13 Barrer. Analysis of sorption shed light on the high contribution of diffusivity on governing permeation properties of the composite membranes. The mixed gas analysis offered highly encouraging results in comparison to known composite membranes of different polymers with ZIF-8. Placement of present data on `upper-bound' showed a rapid enhancement in selectivity by the addition of ZIF-8 in the polymer matrix, which seems to be a result of the elimination of inter-phase defects. It was made possible due to the functionality of host polymer.10aGas permeation10aOlefin/paraffin separation10aPolybenzimidazole (PBI)10aZIF-81 aKunjattu, Shebeeb, H.1 aAshok, Varsha1 aBhaskar, Anand1 aPandare, Kiran1 aBanerjee, Rahul1 aKharul, Ulhas, K.  uhttps://library.ncl.res.in/content/zif-8dbzpbi-bui-composite-membranes-olefinparaffin-separation