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Statements

Subject Item
n2:RIV%2F60461373%3A22340%2F10%3A00023472%21RIV11-MSM-22340___
rdf:type
skos:Concept n15:Vysledek
dcterms:description
The present work describes a method for producing calcium alginate hydrogel microcapsules in the size range of 50?70 μm by means of a piezoelectric drop-on-demand inkjet device. Particles were prepared by emitting droplets of 0.5% and 1% (w/w) sodium alginate solutions into a magnetically stirred pool of CaCl2 solution of variable viscosity ranging from 1 to 100 mPas. The effect of viscosity on the morphology of the resulting microcapsules was systematically investigated ? lower viscosity of the receiving solution has lead to the formation of elongated particles, medium viscosities lead to spherical capsules, and for higher viscosities flattened particles were obtained. The applied voltage used for driving the piezoelectric inkjet print-headwas found to be themost significant parameter for influencing the droplet size. The duration of the voltage pulse or the droplet viscosity had only minor effects. The release rates of two model substances (methylene blue dye and vitamin B12) from alginate bead The present work describes a method for producing calcium alginate hydrogel microcapsules in the size range of 50?70 μm by means of a piezoelectric drop-on-demand inkjet device. Particles were prepared by emitting droplets of 0.5% and 1% (w/w) sodium alginate solutions into a magnetically stirred pool of CaCl2 solution of variable viscosity ranging from 1 to 100 mPas. The effect of viscosity on the morphology of the resulting microcapsules was systematically investigated ? lower viscosity of the receiving solution has lead to the formation of elongated particles, medium viscosities lead to spherical capsules, and for higher viscosities flattened particles were obtained. The applied voltage used for driving the piezoelectric inkjet print-headwas found to be themost significant parameter for influencing the droplet size. The duration of the voltage pulse or the droplet viscosity had only minor effects. The release rates of two model substances (methylene blue dye and vitamin B12) from alginate bead
dcterms:title
Inkjet fabrication and characterization of calcium alginate microcapsules Inkjet fabrication and characterization of calcium alginate microcapsules
skos:prefLabel
Inkjet fabrication and characterization of calcium alginate microcapsules Inkjet fabrication and characterization of calcium alginate microcapsules
skos:notation
RIV/60461373:22340/10:00023472!RIV11-MSM-22340___
n3:aktivita
n6:R n6:S n6:P
n3:aktivity
P(KJB401280801), R, S
n3:cisloPeriodika
3
n3:dodaniDat
n16:2011
n3:domaciTvurceVysledku
n4:4022378 n4:4274482
n3:druhVysledku
n8:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n13:predkladatel
n3:idSjednocenehoVysledku
264031
n3:idVysledku
RIV/60461373:22340/10:00023472
n3:jazykVysledku
n7:eng
n3:klicovaSlova
Calcium alginate; Drop-on-demand; Microencapsulation; Diffusion; Droplet impact
n3:klicoveSlovo
n5:Diffusion n5:Calcium%20alginate n5:Droplet%20impact n5:Microencapsulation n5:Drop-on-demand
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[8B0E819C386E]
n3:nazevZdroje
Powder Technology
n3:obor
n17:CI
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n10:KJB401280801
n3:rokUplatneniVysledku
n16:2010
n3:svazekPeriodika
200
n3:tvurceVysledku
Dohnal, Jiří Štěpánek, František
n3:wos
000277719700017
s:issn
0032-5910
s:numberOfPages
6
n12:organizacniJednotka
22340