01836nas a2200217   4500008004100000022001400041245011200055210006900167260000900236300001200245490000800257520105800265653001901323653002701342653002901369653002001398100002701418700002701445700002301472856012301495       2018                        eng d  a0376-738800aSolvent and pH-stable poly(2,5-benzimidazole) (ABPBI) based UF membranes: preparation and characterizations0 aSolvent and pHstable poly25benzimidazole ABPBI based UF membrane  cOCT   a743-7510 v5633 a<p>Poly(2,5-benzimidazole), commonly known as ABPBI, is an excellent thermo-chemically stable polymer that is widely evaluated as a proton exchange membrane material in a fuel cell. Its niche intrinsic characteristics could be highly useful in the membrane preparation for various separation applications, especially under harsher environments. To gain insights towards this feasibility, ABPBI based supported membranes were prepared by phase inversion method. Effects of the nonwoven porous support material (polypropylene/polyester), non-solvent (water/0.5 N NaOH) and polymer concentration (6 or 4 wt%) on the membrane properties (water flux, rejection and porosity) were investigated. The stability of these membranes towards common organic solvents, concentrated acid (25 N H2SO4), base (2.5 N NaOH) and an autoclave condition was analyzed. ABPBI membrane showed a pore collapse after drying. In order to avoid this, the glycerol treatment was not only found to be suitable but also repeatable, without significant deviations in the water flux.</p>10aABPBI membrane10aPore size distribution10aSolvent stable membranes10aUltrafiltration1 aLohokare, Harshada, R.1 aChaudhari, Harshal, D.1 aKharul, Ulhas., K.  uhttps://library.ncl.res.in/content/solvent-and-ph-stable-poly25-benzimidazole-abpbi-based-uf-membranes-preparation-and