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Statements

Subject Item
n2:RIV%2F60461373%3A22340%2F10%3A00023295%21RIV11-GA0-22340___
rdf:type
n6:Vysledek skos:Concept
dcterms:description
Composite microcapsules consisting of a thermo-responsive hydrogel poly-N-isopropylacrylamide (PNIPAM) and coated by silica (SiO(2)) nanoparticles have been synthesized by the inverse Pickering emulsion polymerization method. The composite capsules, whose mean diameter is in the 25-86 microm range in the expanded state, were characterized by static light scattering, atomic force microscopy (AFM), scanning electron microscopy (SEM), and laser scanning confocal microscopy (LSCM). It is reported that the hydrogel surface is uniformly covered by a monolayer of silica nanoparticles and that depending on the capsule size and degree of polymer cross-linking, either hollow-core or partially-filled hydrogel-core microcapsules can be created. Equilibrium thermo-responsive behavior of the composite microcapsules is investigated and it is found that after heating the particles above the lower critical solution temperature (LCST) of PNIPAM, the shrinkage ratio V/V(max) varies from 0.8 to 0.4 for a cross-linking ra Composite microcapsules consisting of a thermo-responsive hydrogel poly-N-isopropylacrylamide (PNIPAM) and coated by silica (SiO(2)) nanoparticles have been synthesized by the inverse Pickering emulsion polymerization method. The composite capsules, whose mean diameter is in the 25-86 microm range in the expanded state, were characterized by static light scattering, atomic force microscopy (AFM), scanning electron microscopy (SEM), and laser scanning confocal microscopy (LSCM). It is reported that the hydrogel surface is uniformly covered by a monolayer of silica nanoparticles and that depending on the capsule size and degree of polymer cross-linking, either hollow-core or partially-filled hydrogel-core microcapsules can be created. Equilibrium thermo-responsive behavior of the composite microcapsules is investigated and it is found that after heating the particles above the lower critical solution temperature (LCST) of PNIPAM, the shrinkage ratio V/V(max) varies from 0.8 to 0.4 for a cross-linking ra
dcterms:title
Investigation of internal microstructure and thermo-responsive properties of composite PNIPAM/silica microcapsules Investigation of internal microstructure and thermo-responsive properties of composite PNIPAM/silica microcapsules
skos:prefLabel
Investigation of internal microstructure and thermo-responsive properties of composite PNIPAM/silica microcapsules Investigation of internal microstructure and thermo-responsive properties of composite PNIPAM/silica microcapsules
skos:notation
RIV/60461373:22340/10:00023295!RIV11-GA0-22340___
n3:aktivita
n14:R n14:S n14:P
n3:aktivity
P(GD104/08/H055), P(KJB401280801), R, S
n3:cisloPeriodika
2
n3:dodaniDat
n10:2011
n3:domaciTvurceVysledku
n7:3825361 n7:4022378 n7:2359626
n3:druhVysledku
n15:J
n3:duvernostUdaju
n12:S
n3:entitaPredkladatele
n17:predkladatel
n3:idSjednocenehoVysledku
264824
n3:idVysledku
RIV/60461373:22340/10:00023295
n3:jazykVysledku
n16:eng
n3:klicovaSlova
Microencapsulation; Hydrogel; Stimuli-responsive polymer; Pickering emulsion; Drying
n3:klicoveSlovo
n4:Microencapsulation n4:Drying n4:Stimuli-responsive%20polymer n4:Hydrogel n4:Pickering%20emulsion
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[1DC2A71F0619]
n3:nazevZdroje
Journal of Colloid and Interface Science
n3:obor
n11:CI
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
3
n3:projekt
n13:GD104%2F08%2FH055 n13:KJB401280801
n3:rokUplatneniVysledku
n10:2010
n3:svazekPeriodika
346
n3:tvurceVysledku
Hanuš, Jaroslav Čejková, Jitka Štěpánek, František
n3:wos
000277482200011
s:issn
0021-9797
s:numberOfPages
9
n18:organizacniJednotka
22340