Dipyridyl functionalized polysulfones for membrane production

Summers G.J.; Ndawuni M.P.; Summers C.A.

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dc.contributor.author	Summers G.J.	en
dc.contributor.author	Ndawuni M.P.	en
dc.contributor.author	Summers C.A.	en
dc.date.accessioned	2012-11-01T16:31:37Z
dc.date.available	2012-11-01T16:31:37Z
dc.date.issued	2003	en
dc.identifier.citation	Journal of Membrane Science	en
dc.identifier.citation	226	en
dc.identifier.citation	02-Jan	en
dc.identifier.issn	3767388	en
dc.identifier.other	10.1016/j.memsci.2003.08.009	en
dc.identifier.uri	http://hdl.handle.net/10500/7453
dc.description.abstract	The synthesis of dipyridyl functionalized polysulfone with improved hydrophilicity and enhanced membrane morphological characteristics is described. The polymer functionalization process involves the formation of lithiated polysulfone from polysulfone (1) and subsequent reaction with excess 2,2′-vinylidenedipyridine (2) in tetrahydrofuran (THF) at -78°C under argon atmosphere to afford the corresponding dipyridyl functionalized polysulfone (3) with an 80% degree of functionalization. The functionalized polymers were characterized by size exclusion chromatography, NMR, FTIR, differential scanning calorimetry and thermogravimetric analysis. Membranes obtained from unmodified polysulfone as well as dipyridyl functionalized polysulfones were characterized by atomic force microscopy, scanning electron microscopy, pure water permeation measurements and contact angle measurements. © 2003 Elsevier B.V. All rights reserved.	en
dc.language.iso	en	en
dc.subject	Atomic force microscopy; Dipyridyl functionalized polysulfone; Hydrophilicity; Polysulfone membranes; Roughness; Scanning electron microscopy; Ultrafiltration Argon; Atomic force microscopy; Contact angle; Differential scanning calorimetry; Fourier transform infrared spectroscopy; Hydrophilicity; Morphology; Nuclear magnetic resonance; Polysulfones; Scanning electron microscopy; Size exclusion chromatography; Thermogravimetric analysis; Pure water permeation measurements; Polymeric membranes; argon; bipyridine derivative; polymer; polysulfone; tetrahydrofuran; vinyl derivative; article; atmosphere; atomic force microscopy; chemical reaction; contact angle; differential scanning calorimetry; gel permeation chromatography; hydrophilicity; infrared spectroscopy; membrane structure; nuclear magnetic resonance; priority journal; synthesis; thermogravimetry; water permeability	en
dc.title	Dipyridyl functionalized polysulfones for membrane production	en
dc.type	Article	en