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Statements

Subject Item
n2:RIV%2F00216305%3A26310%2F07%3APU70950%21RIV08-MSM-26310___
rdf:type
n5:Vysledek skos:Concept
dcterms:description
Fundamental principles of polymer physics were used for description of relaxation behavior of polymer chain near solid surface. In a nanocomposite, considerable portion of polymer matrix is in contact with the filler surface even at very low filler loadings. In this study, nanocomposite was considered as a two component system consisting of (i) bulk polymer matrix and (ii) effective particles composed of adsorbed polymer shell and filler particle core. Both polymer phases, i.e., bulk and immobilized, are able to relax, however, each of them on a different time scale. Thus, above the neat matrix Tg, these two phases undergo (i) free and (ii) retarded reptation dynamics due to the adsorption processes on the filler surface, respectively. Relaxation time was calculated for each phase using the reptation theory. To calculate the mixed response of the whole polymer nanocomposite, a simple rule of mixtures model and percolation model were used. Calculated composite relaxation times were correlated with expe Fundamental principles of polymer physics were used for description of relaxation behavior of polymer chain near solid surface. In a nanocomposite, considerable portion of polymer matrix is in contact with the filler surface even at very low filler loadings. In this study, nanocomposite was considered as a two component system consisting of (i) bulk polymer matrix and (ii) effective particles composed of adsorbed polymer shell and filler particle core. Both polymer phases, i.e., bulk and immobilized, are able to relax, however, each of them on a different time scale. Thus, above the neat matrix Tg, these two phases undergo (i) free and (ii) retarded reptation dynamics due to the adsorption processes on the filler surface, respectively. Relaxation time was calculated for each phase using the reptation theory. To calculate the mixed response of the whole polymer nanocomposite, a simple rule of mixtures model and percolation model were used. Calculated composite relaxation times were correlated with expe V práci byly použity základní principy polymerní fyziky + perkolační model pro popis relaxačního chování PVAc-HA nanokompozitu.
dcterms:title
Relaxation processes in PVAc-HA nanocomposites Relaxační procesy v PVAc-HA nanokompozitech Relaxation processes in PVAc-HA nanocomposites
skos:prefLabel
Relaxation processes in PVAc-HA nanocomposites Relaxation processes in PVAc-HA nanocomposites Relaxační procesy v PVAc-HA nanokompozitech
skos:notation
RIV/00216305:26310/07:PU70950!RIV08-MSM-26310___
n3:strany
1380-1388
n3:aktivita
n13:Z
n3:aktivity
Z(MSM0021630501)
n3:cisloPeriodika
11
n3:dodaniDat
n4:2008
n3:domaciTvurceVysledku
n9:9608486 n9:3293564
n3:druhVysledku
n16:J
n3:duvernostUdaju
n7:S
n3:entitaPredkladatele
n17:predkladatel
n3:idSjednocenehoVysledku
447236
n3:idVysledku
RIV/00216305:26310/07:PU70950
n3:jazykVysledku
n15:eng
n3:klicovaSlova
nanocomposites, viscoelastic properties, molecular modeling
n3:klicoveSlovo
n11:molecular%20modeling n11:viscoelastic%20properties n11:nanocomposites
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[B2048CD525F0]
n3:nazevZdroje
Journal of Polymer Science
n3:obor
n8:CD
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:rokUplatneniVysledku
n4:2007
n3:svazekPeriodika
45
n3:tvurceVysledku
Kalfus, Jan Jančář, Josef
n3:zamer
n6:MSM0021630501
s:issn
0887-6266
s:numberOfPages
9
n18:organizacniJednotka
26310