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Statements

Subject Item
n2:RIV%2F00216305%3A26620%2F12%3APU99887%21RIV13-MSM-26620___
rdf:type
n9:Vysledek skos:Concept
dcterms:description
In situ dynamic rheology was used to investigate the polymerization process of gelcasting suspensions based on fine alumina and water solution of methacrylamide and methylene bisacrylamide monomers. Small-strain oscillatory shear measurements were able to detect the progress of the whole gelation process from the liquid suspension to the elastic gel. The parameters describing the gelation kinetics and final gel properties such as idle time, total gelation time and equilibrium complex viscosity were correlated with the initiator/accelerator concentration, linear to cross-linking monomer ratio, polymerization temperature, and alumina loading. A strong catalytic effect of fine alumina particles on the decomposition of ammonium persulfate into free radicals was established. The catalytic activity of alumina powder was controlled by ions adsorbed on the particle surface. The catalytic effect of alumina in the presence of the Dolapix CE 64 dispersant made the polymerization process independent of the accele In situ dynamic rheology was used to investigate the polymerization process of gelcasting suspensions based on fine alumina and water solution of methacrylamide and methylene bisacrylamide monomers. Small-strain oscillatory shear measurements were able to detect the progress of the whole gelation process from the liquid suspension to the elastic gel. The parameters describing the gelation kinetics and final gel properties such as idle time, total gelation time and equilibrium complex viscosity were correlated with the initiator/accelerator concentration, linear to cross-linking monomer ratio, polymerization temperature, and alumina loading. A strong catalytic effect of fine alumina particles on the decomposition of ammonium persulfate into free radicals was established. The catalytic activity of alumina powder was controlled by ions adsorbed on the particle surface. The catalytic effect of alumina in the presence of the Dolapix CE 64 dispersant made the polymerization process independent of the accele
dcterms:title
Optimization of Fine Alumina Gelcasting Using In Situ Dynamic Rheology Optimization of Fine Alumina Gelcasting Using In Situ Dynamic Rheology
skos:prefLabel
Optimization of Fine Alumina Gelcasting Using In Situ Dynamic Rheology Optimization of Fine Alumina Gelcasting Using In Situ Dynamic Rheology
skos:notation
RIV/00216305:26620/12:PU99887!RIV13-MSM-26620___
n9:predkladatel
n10:orjk%3A26620
n4:aktivita
n18:P
n4:aktivity
P(ED1.1.00/02.0068), P(OC09040)
n4:cisloPeriodika
9
n4:dodaniDat
n16:2013
n4:domaciTvurceVysledku
Bera, Oskar n17:7628714
n4:druhVysledku
n15:J
n4:duvernostUdaju
n5:S
n4:entitaPredkladatele
n19:predkladatel
n4:idSjednocenehoVysledku
156951
n4:idVysledku
RIV/00216305:26620/12:PU99887
n4:jazykVysledku
n13:eng
n4:klicovaSlova
Suspensions, Gels, Rheology, Polymerization, Catalyst
n4:klicoveSlovo
n11:Gels n11:Catalyst n11:Rheology n11:Suspensions n11:Polymerization
n4:kodStatuVydavatele
US - Spojené státy americké
n4:kontrolniKodProRIV
[0815B0A27208]
n4:nazevZdroje
Journal of the American Ceramic Society
n4:obor
n14:JH
n4:pocetDomacichTvurcuVysledku
2
n4:pocetTvurcuVysledku
2
n4:projekt
n6:OC09040 n6:ED1.1.00%2F02.0068
n4:rokUplatneniVysledku
n16:2012
n4:svazekPeriodika
95
n4:tvurceVysledku
Bera, Oskar Trunec, Martin
n4:wos
000308290400031
s:issn
0002-7820
s:numberOfPages
8
n12:organizacniJednotka
26620