About: Utilization of %22q(+)/q(-) = const.%22 DSC cycles for physical aging studies

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	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 can be applied to other physical aging measurements performed for the given glassy material and DSC instrument. 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 can be applied to other physical aging measurements performed for the given glassy material and DSC instrument. (en)
Title	Utilization of %22q(+)/q(-) = const.%22 DSC cycles for physical aging studies Utilization of %22q(+)/q(-) = const.%22 DSC cycles for physical aging studies (en)
skos:prefLabel	Utilization of %22q(+)/q(-) = const.%22 DSC cycles for physical aging studies Utilization of %22q(+)/q(-) = const.%22 DSC cycles for physical aging studies (en)
skos:notation	RIV/00216275:25310/14:39898152!RIV15-GA0-25310___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GAP106/11/1152)
http://linked.open...iv/cisloPeriodika	October
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Svoboda, Roman
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Pardubice / Fakulta chemicko-technologická
http://linked.open...dnocenehoVysledku	52633
http://linked.open...ai/riv/idVysledku	RIV/00216275:25310/14:39898152
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Enthalpy relaxation; Data-distortive effects; Activation energy; Glass transition (en)
http://linked.open.../riv/klicoveSlovo	Activation energy Glass transition Data-distortive effects Enthalpy relaxation
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[80603C4ACD15]
http://linked.open...i/riv/nazevZdroje	European Polymer Journal
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	1 (xsd:int)
http://linked.open...vavai/riv/projekt	Reversible crystallization and structural relaxation in amorphous materials used for phase change recording
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	59
http://linked.open...iv/tvurceVysledku	Svoboda, Roman
http://linked.open...ain/vavai/riv/wos	000343341100021
issn	0014-3057
number of pages	9 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.eurpolymj.2014.07.039
http://localhost/t...ganizacniJednotka	25310

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