Cross-linking regulators in one-step synthesis of macronet ion-exchangers

Valkanas, NP; Vrekou, VD; Theodoropoulos, AG; Valkanas, GN; Konstantakopoulos, IC

dc.contributor.author	Valkanas, NP	en
dc.contributor.author	Vrekou, VD	en
dc.contributor.author	Theodoropoulos, AG	en
dc.contributor.author	Valkanas, GN	en
dc.contributor.author	Konstantakopoulos, IC	en
dc.date.accessioned	2014-03-01T01:11:48Z
dc.date.available	2014-03-01T01:11:48Z
dc.date.issued	1996	en
dc.identifier.issn	0022-2461	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11825
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0030246768&partnerID=40&md5=4d58efb454a6102bfd24310b3368aaab	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	Copolymers	en
dc.subject.other	Crosslinking	en
dc.subject.other	Foamed plastics	en
dc.subject.other	Ion exchange	en
dc.subject.other	Morphology	en
dc.subject.other	Polystyrenes	en
dc.subject.other	Scanning electron microscopy	en
dc.subject.other	Structure (composition)	en
dc.subject.other	Styrene	en
dc.subject.other	Sulfonation	en
dc.subject.other	Swelling	en
dc.subject.other	Synthesis (chemical)	en
dc.subject.other	Acetic anhydride	en
dc.subject.other	Chlorosulphonic acid	en
dc.subject.other	Crosslinking regulator concentration	en
dc.subject.other	Hydrophilic macronet resin	en
dc.subject.other	Macronet ion exchangers	en
dc.subject.other	Sulphone type crosslinks	en
dc.subject.other	Sulphonic acid group	en
dc.subject.other	Ion exchangers	en
dc.title	Cross-linking regulators in one-step synthesis of macronet ion-exchangers	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1996	en
heal.abstract	Hydrophillic macronet resins were prepared via a route which includes simultaneous sulphonation and cross-linking of styrene-acrylonitrile copolymer and polystyrene foam. Chlorosulphonic acid was employed as both the sulphonating reagent for the introduction of the sulphonic acid group on styrene units and the medium for the formation of sulphone-type cross-links. Controlled cross-linked structures were achieved by the parallel participation of acetic acid or acetic anhydride as sulphone cross-bridging regulators. The reaction yield, as well as the properties of the formed gels, were studied in respect to the cross-linking regulator concentration and the chlorosulphonic acid flow rate. Both strongly and weakly acidic ion-exchangers on the same substrate were achieved when styrene-acrylonitrile copolymer was used as a raw material. The synthesized macronet ion-exchangers were found to exhibit high swelling abilities and intermediate ion-exchange capacities while scanning electron microscopy (SEM) revealed their morphology. © 1996 Chapman & Hall.	en
heal.publisher	CHAPMAN HALL LTD	en
heal.journalName	Journal of Materials Science	en
dc.identifier.isi	ISI:A1996VK39700014	en
dc.identifier.volume	31	en
dc.identifier.issue	18	en
dc.identifier.spage	4831	en
dc.identifier.epage	4836	en