About: Free volume dependence of polymer viscosity     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

AttributesValues
rdf:type
Description
  • Stavová rovnice Simha-Somcynskeho byla použita k výpočtu volno-objemového parametru h z tlak-objem-teplota (PVT) závislostí osmi polymerů. Predikovaná variance parametru h s teplotou a tlakem byl potvrzen positron anihilační spektroskopií a odpovídající shodabyla nalezena pro h(P=konstantní)=h(T) stejně jako h(T=konstantní)=h(P). Kapilární smyková viskozitní data (v) stejných polymerů pro tři různé teploty a šest tlaků byla vynesena jako funkce log(v) versus 1/h, kdy h bylo vypočítáno pro hodnoty tlaku a teploty experimentálních podmínek viskozitních měření. Dříve nalezená %22master křivka%22 pro silikonové oleje v širokém rozpětí teploty a tlaku byla shledána jako nepoužitelná pro taveniny polymerů. (cs)
  • The Simha-Somcynsky (S-S) equation of state (eos) was used to compute the free volume parameter, h, from the pressure-volume-temperature (PVT) dependencies of eight molten polymers. The predicted by eos variation of h with T and P was confirmed by the positron annihilation lifetime spectroscopy; good agreement was found for h(P=constant)=h(T) as well as for h(T=constant)=h(P). Capillary shear viscosity (η) data of the same polymers (measured at three temperatures and six pressures up to 700 bars), were plotted as logη vs 1/h, the latter computed for T and P at which η was measured. In previous works, such a plot for solvents and silicone oils resulted in a %22master curve%22 for the liquid, in a wide range of T and P. However, for molten polymers, no superposition of data onto a %22master curve%22 could be found.
  • The Simha-Somcynsky (S-S) equation of state (eos) was used to compute the free volume parameter, h, from the pressure-volume-temperature (PVT) dependencies of eight molten polymers. The predicted by eos variation of h with T and P was confirmed by the positron annihilation lifetime spectroscopy; good agreement was found for h(P=constant)=h(T) as well as for h(T=constant)=h(P). Capillary shear viscosity (η) data of the same polymers (measured at three temperatures and six pressures up to 700 bars), were plotted as logη vs 1/h, the latter computed for T and P at which η was measured. In previous works, such a plot for solvents and silicone oils resulted in a %22master curve%22 for the liquid, in a wide range of T and P. However, for molten polymers, no superposition of data onto a %22master curve%22 could be found. (en)
Title
  • Free volume dependence of polymer viscosity
  • Free volume dependence of polymer viscosity (en)
  • Volno-objemová závislost viskozity polymerů (cs)
skos:prefLabel
  • Free volume dependence of polymer viscosity
  • Free volume dependence of polymer viscosity (en)
  • Volno-objemová závislost viskozity polymerů (cs)
skos:notation
  • RIV/70883521:28110/07:63505489!RIV08-AV0-28110___
http://linked.open.../vavai/riv/strany
  • 479-494
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(IAA2060202)
http://linked.open...iv/cisloPeriodika
  • 4
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 422602
http://linked.open...ai/riv/idVysledku
  • RIV/70883521:28110/07:63505489
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • PVT behavior; Equation-of-state; Free volume; Viscosity; Temperature and pressure dependence (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV
  • [08B0A6792200]
http://linked.open...i/riv/nazevZdroje
  • Rheologice Acta
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 46
http://linked.open...iv/tvurceVysledku
  • Sedláček, Tomáš
  • Utracki, Leszek
issn
  • 0035-4511
number of pages
http://localhost/t...ganizacniJednotka
  • 28110
is http://linked.open...avai/riv/vysledek of
Faceted Search & Find service v1.16.118 as of Jun 21 2024


Alternative Linked Data Documents: ODE     Content Formats:   [cxml] [csv]     RDF   [text] [turtle] [ld+json] [rdf+json] [rdf+xml]     ODATA   [atom+xml] [odata+json]     Microdata   [microdata+json] [html]    About   
This material is Open Knowledge   W3C Semantic Web Technology [RDF Data] Valid XHTML + RDFa
OpenLink Virtuoso version 07.20.3240 as of Jun 21 2024, on Linux (x86_64-pc-linux-gnu), Single-Server Edition (126 GB total memory, 39 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software