About: Post polymerisation hypercrosslinking of styrene/divinylbenzene poly(HIPE)s: creating micropores within macroporous polymer

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About: Post polymerisation hypercrosslinking of styrene/divinylbenzene poly(HIPE)s: creating micropores within macroporous polymer Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Porous copolymers of styrene and divinylbenzene (DVB) were prepared by emulsion templating using high internal phase emulsions (HIPEs) as precursors for monoliths. The ratio of monomers was varied in order to obtain samples with different degrees of crosslinking and different amounts of unreacted vinyl groups originating from DVB. PolyHIPE monoliths were subjected to reswelling and treatment with a radical initiator. Significant enlargement of the amount of meso- and micropores in the material was found resulting in a substantial increase of BET surface area, up to 7.2 times compared to untreated polyHIPEs. The treated PolyHIPE monoliths retained the open macroporous morphology typical of polyHIPE materials. Solid state 13C NMR experiments were used to determine the amount of unreacted vinyl groups in polyHIPE samples, both before and after the hypercrosslinking treatment. Porous copolymers of styrene and divinylbenzene (DVB) were prepared by emulsion templating using high internal phase emulsions (HIPEs) as precursors for monoliths. The ratio of monomers was varied in order to obtain samples with different degrees of crosslinking and different amounts of unreacted vinyl groups originating from DVB. PolyHIPE monoliths were subjected to reswelling and treatment with a radical initiator. Significant enlargement of the amount of meso- and micropores in the material was found resulting in a substantial increase of BET surface area, up to 7.2 times compared to untreated polyHIPEs. The treated PolyHIPE monoliths retained the open macroporous morphology typical of polyHIPE materials. Solid state 13C NMR experiments were used to determine the amount of unreacted vinyl groups in polyHIPE samples, both before and after the hypercrosslinking treatment. (en)
Title	Post polymerisation hypercrosslinking of styrene/divinylbenzene poly(HIPE)s: creating micropores within macroporous polymer Post polymerisation hypercrosslinking of styrene/divinylbenzene poly(HIPE)s: creating micropores within macroporous polymer (en)
skos:prefLabel	Post polymerisation hypercrosslinking of styrene/divinylbenzene poly(HIPE)s: creating micropores within macroporous polymer Post polymerisation hypercrosslinking of styrene/divinylbenzene poly(HIPE)s: creating micropores within macroporous polymer (en)
skos:notation	RIV/61389013:_____/14:00424542!RIV14-GA0-61389013
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GA13-29009S)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Brus, Jiří
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav makromolekulární chemie AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	37928
http://linked.open...ai/riv/idVysledku	RIV/61389013:_____/14:00424542
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	polyHIPE; hypercrosslinking; porous polymers (en)
http://linked.open.../riv/klicoveSlovo	polyHIPE porous polymers hypercrosslinking
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[90593B22FC5F]
http://linked.open...i/riv/nazevZdroje	Polymer
http://linked.open...in/vavai/riv/obor	JI
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Vliv povrchu plniva na molekulární pohyblivost a deformační a lomové chování polymerních kompozitů s termoplastickou matricí
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	55
http://linked.open...iv/tvurceVysledku	Jeřábek, Karel Brus, Jiří Krajnc, P. Sevšek, U.
http://linked.open...ain/vavai/riv/wos	000330207100052
issn	0032-3861
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.polymer.2013.09.026

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