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| Description
| - This paper reports the results of measurements of physical aging on PMMA, PMMA/PEO blends, PS, PC, PVC, ABS, PET (semicrystalline) and PMMA filled with 10% carbon black. Also included in this study were the inorganic glass-formers selenium, As2S3 and As2Se3. During the aging process, induced by a temperature down-jump of 15°C below Tg, the extent of enthalpy, h, and volume, v, relaxation was determined using DSC and mercury-in-glass dilatometry. From the aging records the ratio h/v, tentatively defining an aging modulus Ka, was evaluated. For the polymeric samples Ka values of about 2 GPa were observed, thus similar to the inverse value of the isothermal compressibility around Tg. This conclusion was supported by the data measured on the inorganic glass-formers where significantly higher Ka values were found in agreement with their compressibility characteristics.
- This paper reports the results of measurements of physical aging on PMMA, PMMA/PEO blends, PS, PC, PVC, ABS, PET (semicrystalline) and PMMA filled with 10% carbon black. Also included in this study were the inorganic glass-formers selenium, As2S3 and As2Se3. During the aging process, induced by a temperature down-jump of 15°C below Tg, the extent of enthalpy, h, and volume, v, relaxation was determined using DSC and mercury-in-glass dilatometry. From the aging records the ratio h/v, tentatively defining an aging modulus Ka, was evaluated. For the polymeric samples Ka values of about 2 GPa were observed, thus similar to the inverse value of the isothermal compressibility around Tg. This conclusion was supported by the data measured on the inorganic glass-formers where significantly higher Ka values were found in agreement with their compressibility characteristics. (en)
- V článku jsou uvedeny výsledky měření fyzikálního stárnutí PMMA, PMMA/PEO směsí, PS, PC, PVC, ABS, PET (holokrystalického) a PMMA plněného 10 % sazí. Dále jsou zahrnuty do měření anorganický amorfní selen As2S3 a As2Se3. Během stárnutí indukovaného skokovým snížením teploty o 15°C pod Tg, byly měřeny hodnoty entalpie a objemu pomocí DSC a mercury-in-glass dilatometrie. Z výsledků měření byl určen poměr entalpie/objem definující objemový modul Ka. Pro vzorky polymerů byla hodnota Ka okolo 2 GPa odpovídající obrácené hodnotě isotermní stlačitelnosti okolo Tg. Tento výsledek byl získán také pro anorganický amorfní selen jehož významně vyšší hodnoty Ka jsou v souladu s jeho stlačitelností. (cs)
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| Title
| - The relation between relaxed enthalpy and volume during physical aging of amorphous polymers and selenium
- Vztah mezi entalpii a objemem při fyzikálním stárnutí amorfních polymerů a selénu (cs)
- The relation between relaxed enthalpy and volume during physical aging of amorphous polymers and selenium (en)
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| skos:prefLabel
| - The relation between relaxed enthalpy and volume during physical aging of amorphous polymers and selenium
- Vztah mezi entalpii a objemem při fyzikálním stárnutí amorfních polymerů a selénu (cs)
- The relation between relaxed enthalpy and volume during physical aging of amorphous polymers and selenium (en)
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| skos:notation
| - RIV/67985874:_____/06:00053706!RIV07-AV0-67985874
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(IAA2060401), Z(AV0Z20600510), Z(MSM7088352101)
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/67985874:_____/06:00053706
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - Enthalpy relaxation; Polymer aging (en)
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| http://linked.open.../riv/klicoveSlovo
| |
| http://linked.open...odStatuVydavatele
| - GB - Spojené království Velké Británie a Severního Irska
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| |
| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Sáha, P.
- Slobodian, P.
- Říha, Pavel
- Kubát, J.
- Rychwalski, R. W.
- Emri, I.
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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