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rdf:type
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Description
| - Materiály typu polyHIPE polymerů byly připraveny z koncentrovaných emulzí obsahujícícj 4-vinylbenzil chlorid jako reaktivní monomer a divinylbenzen jako zesíťující činidlo. Emulze se skládaly z 80 obj. % vodné fáze (voda, chlorid vápenatý, iniciátor) a 20 obj. % organické fáze (monomery, surfaktant Span 80 a porogen). Po přečištění připravených polymerů byla jejich morfologie zkoumána rastrovací elektronovou mikroskopií, sorpcí/desorpcí dusíku a inverzní exkluzní chromatografií (ISEC). Bylo zjištěno, že přídavek porogenů nijak podstatně nezlepšuje porozitu suchých materiálů avšak podle zjištění metodou ISEC výrazně zlepšuje mikroporozitu ve zbobtnalém stavu. Porozitu také ovlivňoval způsob sušení (cs)
- Poly(high internal phase emulsion) materials were prepared from concentrated emulsions containing 4-vinylbenzyl chloride as the reactive monomer and divinylbenzene as the cross-linker. Emulsions consisted of 80 vol. % aqueous phase (water, CaCl2, initiator) and 20 vol. % of organic phase (monomers, surfactant Span 80 and a porogenic solvent). Polymerized samples were purified and investigated for morphology and porosity by scanning electron microscopy, nitrogen adsorption/ desorption and inverse steric exclusion chromatography (ISEC). It was found that no substantial additional dry porosity was achieved by the addition of solvents (as determined by nitrogen adsorption) while wet microporosity was substantially improved as determined by the ISEC method. The process of drying the polyHIPE materials also influenced the wet porosity.
- Poly(high internal phase emulsion) materials were prepared from concentrated emulsions containing 4-vinylbenzyl chloride as the reactive monomer and divinylbenzene as the cross-linker. Emulsions consisted of 80 vol. % aqueous phase (water, CaCl2, initiator) and 20 vol. % of organic phase (monomers, surfactant Span 80 and a porogenic solvent). Polymerized samples were purified and investigated for morphology and porosity by scanning electron microscopy, nitrogen adsorption/ desorption and inverse steric exclusion chromatography (ISEC). It was found that no substantial additional dry porosity was achieved by the addition of solvents (as determined by nitrogen adsorption) while wet microporosity was substantially improved as determined by the ISEC method. The process of drying the polyHIPE materials also influenced the wet porosity. (en)
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Title
| - Porogenic Solvents Influence on Morphology of 4-Vinylbenzyl Chloride Based polyHIPEs
- Vliv porogenů na morfologii polyHIPE polymerů na bázi 4-vinylbenzylchloridu (cs)
- Porogenic Solvents Influence on Morphology of 4-Vinylbenzyl Chloride Based polyHIPEs (en)
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skos:prefLabel
| - Porogenic Solvents Influence on Morphology of 4-Vinylbenzyl Chloride Based polyHIPEs
- Vliv porogenů na morfologii polyHIPE polymerů na bázi 4-vinylbenzylchloridu (cs)
- Porogenic Solvents Influence on Morphology of 4-Vinylbenzyl Chloride Based polyHIPEs (en)
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skos:notation
| - RIV/67985858:_____/08:00310259!RIV09-AV0-67985858
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
| - P(1P05ME740), Z(AV0Z40720504)
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/67985858:_____/08:00310259
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - concentrated emulsions; morphology; porosity (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
| - US - Spojené státy americké
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Jeřábek, Karel
- Krajnc, P.
- Soukupová, Krasimira
- Pulko, I.
- Štefanec, D.
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http://linked.open...ain/vavai/riv/wos
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http://linked.open...n/vavai/riv/zamer
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issn
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number of pages
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is http://linked.open...avai/riv/vysledek
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