About: Simultaneous Volume and Enthalpy Relaxation Response Initiated by Temperature Down-Jump     Goto   Sponge   NotDistinct   Permalink

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  • Objemová a entalpická relaxace po teplotním sestupném skoku byla měřena pro PS, PMMA, PET a PMMA plněné sazemi. Rtuťová dilatometrie a DSC byly použity pro měření objemu a entalpie. Bylo zjištěno, že obě veličiny relaxují podobně s možností nalezení jejich konstantního poměru. Ten je pro polymery kolem 2GPa, blízko kompresibilitě v tavenině. (cs)
  • The volume and enthalpy relaxation, so called structural relaxation or physical aging phenomenon were measured after temperature down-jump from equilibrium above glass transition temperature to glassy state. The tested materials were PMMA, PS, amorphous PET and PMMA filled with carbon black. Mercury-in-Glass Dilatometer was employed for volume relaxation measurements and Perkin-Elmer DSC 1 Pyris was used for enthalpy relaxation measurements. The relaxation data were collected from minutes after temperature jump to nearly a month. It was found that enthalpy and volume relax by very similar way, which means that constant relationship between both quantities can be found defined one time independent ratio over relaxation times of above described experimental window. It was found that its value is close to the inversion value of compressibility measured by direct compression giving value for tested polymers to be around 2GPa.
  • The volume and enthalpy relaxation, so called structural relaxation or physical aging phenomenon were measured after temperature down-jump from equilibrium above glass transition temperature to glassy state. The tested materials were PMMA, PS, amorphous PET and PMMA filled with carbon black. Mercury-in-Glass Dilatometer was employed for volume relaxation measurements and Perkin-Elmer DSC 1 Pyris was used for enthalpy relaxation measurements. The relaxation data were collected from minutes after temperature jump to nearly a month. It was found that enthalpy and volume relax by very similar way, which means that constant relationship between both quantities can be found defined one time independent ratio over relaxation times of above described experimental window. It was found that its value is close to the inversion value of compressibility measured by direct compression giving value for tested polymers to be around 2GPa. (en)
Title
  • Simultaneous Volume and Enthalpy Relaxation Response Initiated by Temperature Down-Jump
  • Simultaneous Volume and Enthalpy Relaxation Response Initiated by Temperature Down-Jump (en)
  • Společná objemová a entalpická relaxační odezva iniciovaná teplotním sestupným skokem (cs)
skos:prefLabel
  • Simultaneous Volume and Enthalpy Relaxation Response Initiated by Temperature Down-Jump
  • Simultaneous Volume and Enthalpy Relaxation Response Initiated by Temperature Down-Jump (en)
  • Společná objemová a entalpická relaxační odezva iniciovaná teplotním sestupným skokem (cs)
skos:notation
  • RIV/70883521:28110/06:63504623!RIV07-MSM-28110___
http://linked.open.../vavai/riv/strany
  • 1-1
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(MSM7088352101)
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
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  • 499470
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  • RIV/70883521:28110/06:63504623
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  • Volume and enthalpy relaxation; temperature down-jump (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [D68EE0BBBE9A]
http://linked.open...i/riv/mistoVydani
  • Akron
http://linked.open...i/riv/nazevZdroje
  • Polymer Processing Society 22nd Annual Meeting PPS
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Sáha, Petr
  • Slobodián, Petr
  • Hadač, Jiří
http://linked.open...n/vavai/riv/zamer
number of pages
http://purl.org/ne...btex#hasPublisher
  • Polymer Processing Society
https://schema.org/isbn
  • 4-9093109-2-6
http://localhost/t...ganizacniJednotka
  • 28110
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