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  • Kritický přehled literárních dat o teplotě skelného přechodu poly(vinylfenolu) odhalil značný rozptyl hodnot v rozmezí 53 až 194 °C, který lze jen zčásti vysvětlit závislostí na molární hmotnosti. Důvodem může být zbytková vlhkost anebo rozpouštědlo v nedostatečně vysušených vzorcích. Na základě dvou třetin literárních dat byla navržena regresní rovnice pro závislost Tg na 1/Mn. Dva komerční vzorky PVPh byly studovány DSC, ATR-FTIR a SEC metodou. Byl vypracován postup přesně definované přípravy vzorků pro stanovení Tg. (cs)
  • Critical overview of literature data on the glass transition temperature Tg of poly(4-vinylphenol) PVPh revealed a large scatter of values ranging between 53 and 194 °C, which can only partially be attributed to molecular-mass effect. The reason could be seen in residual moisture and/or solvent in samples subjected to insufficient or even no drying. Based on selected two thirds of literature data, a regression equation is proposed for the dependence of Tg on 1/Mn. Two samples of commercial PVPh were studied by DSC, ATR-FTIR, and SEC methods. A procedure of preparing well defined samples for Tg determination has been elaborated.
  • Critical overview of literature data on the glass transition temperature Tg of poly(4-vinylphenol) PVPh revealed a large scatter of values ranging between 53 and 194 °C, which can only partially be attributed to molecular-mass effect. The reason could be seen in residual moisture and/or solvent in samples subjected to insufficient or even no drying. Based on selected two thirds of literature data, a regression equation is proposed for the dependence of Tg on 1/Mn. Two samples of commercial PVPh were studied by DSC, ATR-FTIR, and SEC methods. A procedure of preparing well defined samples for Tg determination has been elaborated. (en)
Title
  • Note on the glass transition temperature of poly(vinylphenol)
  • Teplota skelného přechodu poly(vinylfenolu) (cs)
  • Note on the glass transition temperature of poly(vinylphenol) (en)
skos:prefLabel
  • Note on the glass transition temperature of poly(vinylphenol)
  • Teplota skelného přechodu poly(vinylfenolu) (cs)
  • Note on the glass transition temperature of poly(vinylphenol) (en)
skos:notation
  • RIV/61389013:_____/09:00325269!RIV09-AV0-61389013
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(AV0Z40500505)
http://linked.open...iv/cisloPeriodika
  • 6
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
  • 329799
http://linked.open...ai/riv/idVysledku
  • RIV/61389013:_____/09:00325269
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Poly(4-vinylphenol); glass transition temperature; differential scanning calorimetry (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV
  • [CA523056EE44]
http://linked.open...i/riv/nazevZdroje
  • European Polymer Journal
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 45
http://linked.open...iv/tvurceVysledku
  • Dybal, Jiří
  • Sikora, Antonín
  • Kratochvíl, Jaroslav
  • Šturcová, Adriana
http://linked.open...ain/vavai/riv/wos
  • 000266857200027
http://linked.open...n/vavai/riv/zamer
issn
  • 0014-3057
number of pages
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