Preparation of strong acid network particles. The role of the catalyst in a multiple reaction environment

Theodoropoulos Athanasios, G

dc.contributor.author	Theodoropoulos Athanasios, G	en
dc.date.accessioned	2014-03-01T01:09:30Z
dc.date.available	2014-03-01T01:09:30Z
dc.date.issued	1993	en
dc.identifier.issn	1060-1325	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11044
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0027610873&partnerID=40&md5=45330d2c275388c2feaed6bac336d876	en
dc.subject.classification	Polymer Science	en
dc.subject.other	Agents	en
dc.subject.other	Aromatic compounds	en
dc.subject.other	Catalysis	en
dc.subject.other	Catalysts	en
dc.subject.other	Crosslinking	en
dc.subject.other	Friedel-Crafts reaction	en
dc.subject.other	Ion exchange	en
dc.subject.other	Reaction kinetics	en
dc.subject.other	Sulfonation	en
dc.subject.other	Sulfuric acid	en
dc.subject.other	Suspensions (fluids)	en
dc.subject.other	Swelling	en
dc.subject.other	Chloromethylated xylene	en
dc.subject.other	Ionic networks	en
dc.subject.other	Macronet sulfonated polystyrene	en
dc.subject.other	Polystyrenes	en
dc.title	Preparation of strong acid network particles. The role of the catalyst in a multiple reaction environment	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1993	en
heal.abstract	A rapid preparative route to macronet sulfonated polystyrene is described, based on protonic acid catalysis of a complicated Friedel-Crafts reactions system. Post-polymerization crosslinking was used, employing a chloromethylated xylene derivative as the crosslinking agent and sulfuric acid as a catalyst. The same reagent was used as medium for the introduction of sulfonic groups on styrene units and as suspending medium, in order to achieve spherical particles. One sulfonating agent, that was initially introduced to the reactor and high temperatures were used, in spite of previously mentioned procedures, thus leading to a vigorous one-step process. Following kinetic characterization, it was demonstrated that the selection of the reaction conditions leads to simultaneous crosslinking and sulfonation. High ion-exchange capacities, enhanced swelling ratios and gel-type networks were obtained according to this particular suspension technique.	en
heal.publisher	MARCEL DEKKER INC	en
heal.journalName	Macromolecular Reports - International Rapid Publication Supplement to the Journal of Macromolecular Science-Pure and Applied Chemistry	en
dc.identifier.isi	ISI:A1993LA41500013	en
dc.identifier.volume	A30	en
dc.identifier.issue	SUPP 3-4	en
dc.identifier.spage	287	en
dc.identifier.epage	294	en