Chemical modification of polysulfone: Anionic synthesis of dipyridyl functionalized polysulfone

dc.contributor.author	Summers G.J.	en
dc.contributor.author	Ndawuni M.P.	en
dc.contributor.author	Summers C.A.	en
dc.date.accessioned	2012-11-01T16:31:38Z
dc.date.available	2012-11-01T16:31:38Z
dc.date.issued	2001	en
dc.identifier.citation	Polymer	en
dc.identifier.citation	42	en
dc.identifier.citation	2	en
dc.identifier.issn	323861	en
dc.identifier.uri	http://hdl.handle.net/10500/7481
dc.description.abstract	A new method for the synthesis of dipyridyl functionalized polysulfone is described. The functionalization process involves the formation of lithiated polysulfone from polysulfone (1) and subsequent reaction with 2,2′-vinylidenedipyridine (2) in tetrahydrofuran at - 78°C under argon atmosphere. The dipyridyl functionalized polysulfone (3) was evaluated for the chelation of trace heavy metal ions such as copper and nickel in aqueous medium. The dipyridyl functionalized polysulfone shows better complexing affinity for nickel ions at specific concentrations of test solutions. Quaternization reactions of dipyridyl functionalized polysulfone with dimethyl sulfate in the presence of perchloric acid quantitatively affords the corresponding polymeric pyridinium perchlorate derivative (4). © 2000 Elsevier Science Ltd. All rights reserved.	en
dc.language.iso	en	en
dc.subject	Dipyridyl functionalized polysulfone; Polysulfone; Quaternization	en
dc.title	Chemical modification of polysulfone: Anionic synthesis of dipyridyl functionalized polysulfone	en
dc.type	Article	en