Utilization of "q(+)/q(-) = const." DSC cycles for physical aging studies

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F14%3A39898152" target="_blank" >RIV/00216275:25310/14:39898152 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.eurpolymj.2014.07.039" target="_blank" >http://dx.doi.org/10.1016/j.eurpolymj.2014.07.039</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.eurpolymj.2014.07.039" target="_blank" >10.1016/j.eurpolymj.2014.07.039</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Utilization of "q(+)/q(-) = const." DSC cycles for physical aging studies

Popis výsledku v původním jazyce

The utilization of the constant ratio cyclic temperature history, where q(+)/q(-) = const., was examined with respect to physical aging studies. In particular, determination of the apparent activation energy of enthalpy relaxation from constant ratio (CR) cycles was discussed. A novel equation fully utilizing the advantages of CR cycles was derived - it is based on shift of temperature corresponding to the maximum of relaxation peak T-p with the applied heating rate: -Delta h(*)/R = din(q(+))/dT(p)(-1).The equation was extensively tested for all types of structural relaxation behavior; it was proven to be highly accurate and independent from most data-distortive effects. In addition, it was shown that the unique shape of CR cycles curves can be utilized for the identification of certain data-distortive effects - thermal lags, imprecise heating/cooling rates or incomplete achievement of a true glassy state during cooling. Correspondingly, corrections for these data-distortive effects c

Název v anglickém jazyce

Utilization of "q(+)/q(-) = const." DSC cycles for physical aging studies

Popis výsledku anglicky

The utilization of the constant ratio cyclic temperature history, where q(+)/q(-) = const., was examined with respect to physical aging studies. In particular, determination of the apparent activation energy of enthalpy relaxation from constant ratio (CR) cycles was discussed. A novel equation fully utilizing the advantages of CR cycles was derived - it is based on shift of temperature corresponding to the maximum of relaxation peak T-p with the applied heating rate: -Delta h(*)/R = din(q(+))/dT(p)(-1).The equation was extensively tested for all types of structural relaxation behavior; it was proven to be highly accurate and independent from most data-distortive effects. In addition, it was shown that the unique shape of CR cycles curves can be utilized for the identification of certain data-distortive effects - thermal lags, imprecise heating/cooling rates or incomplete achievement of a true glassy state during cooling. Correspondingly, corrections for these data-distortive effects c

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GAP106%2F11%2F1152" target="_blank" >GAP106/11/1152: Reverzibilní krystalizace a strukturni relaxace amorfních materiálů pro záznam informace</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

European Polymer Journal

ISSN

0014-3057

e-ISSN

—

Svazek periodika

59

Číslo periodika v rámci svazku

October

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

180-188

Kód UT WoS článku

000343341100021

EID výsledku v databázi Scopus

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