Preparation, characterization and performance enhancement of polysulfone ultrafiltration membrane using PBI as hydrophilic modifier

In this study, new type of polysulfone (PSf) composite ultrafiltration membranes were prepared by blending PSf with poly[2,2'-(m-phenylene)-5,5'-dibenzimidazole] (PBI). The prepared membranes were characterized by water contact angle, SEM, FTIR, DSC, TG/DTG and cross-flow filtration techni...

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Published inJournal of membrane science Vol. 475; pp. 1 - 8
Main Authors Eren, Erdal, Sarihan, Adem, Eren, Bilge, Gumus, Huseyin, Kocak, Fadime Ozdemir
Format Journal Article
LanguageEnglish
Published 01.02.2015
Subjects
Blending
Differential scanning calorimetry
Fluxes
Membranes
Polybenzimidazoles
Polysulfone resins
Porosity
Ultrafiltration
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Summary:In this study, new type of polysulfone (PSf) composite ultrafiltration membranes were prepared by blending PSf with poly[2,2'-(m-phenylene)-5,5'-dibenzimidazole] (PBI). The prepared membranes were characterized by water contact angle, SEM, FTIR, DSC, TG/DTG and cross-flow filtration techniques. We demonstrated that membrane characteristics such as porosity, hydrophilicity and thermal stability of PSf can be significantly enhanced with the incorporation of PBI. The composite membranes exhibited comparable bovine serum albumin (BSA) retention (69% vs. 36%) and water fluxes (355 vs. 228 L/m super(2) h) against pristine PSf membranes. Possible H-bonding and pi - pi interactions between the functional groups of the PSf and PBI.
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ISSN:0376-7388
DOI:10.1016/j.memsci.2014.10.010