. . . "Kalfus, Jan" . . . . . "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" . . "Relaxation processes in PVAc-HA nanocomposites"@en . . "RIV/00216305:26310/07:PU70950!RIV08-MSM-26310___" . . "RIV/00216305:26310/07:PU70950" . "11" . "nanocomposites, viscoelastic properties, molecular modeling"@en . "0887-6266" . "Relaxation processes in PVAc-HA nanocomposites"@en . "Journal of Polymer Science" . "[B2048CD525F0]" . . "Relaxa\u010Dn\u00ED procesy v PVAc-HA nanokompozitech"@cs . "Relaxation processes in PVAc-HA nanocomposites" . "CZ - \u010Cesk\u00E1 republika" . "Relaxation processes in PVAc-HA nanocomposites" . "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"@en . . "447236" . "2"^^ . "V pr\u00E1ci byly pou\u017Eity z\u00E1kladn\u00ED principy polymern\u00ED fyziky + perkola\u010Dn\u00ED model pro popis relaxa\u010Dn\u00EDho chov\u00E1n\u00ED PVAc-HA nanokompozitu."@cs . . "1380-1388" . "2"^^ . "Z(MSM0021630501)" . "45" . "Relaxa\u010Dn\u00ED procesy v PVAc-HA nanokompozitech"@cs . "Jan\u010D\u00E1\u0159, Josef" . . . "9"^^ . . "26310" .