New features of the glass transition revealed by the StepScan(R) DSC

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F10%3A39881682" target="_blank" >RIV/00216275:25310/10:39881682 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

New features of the glass transition revealed by the StepScan(R) DSC

Popis výsledku v původním jazyce

The results of StepScan DSC obtained for various oxides, chalcogenides, and organic glasses are discussed in connection with the commonly accepted theory of the glass transition. The new experimental features supporting the apparent idea of a reversibleequilibrium being a part of the glass transition that is commonly interpreted as purely kinetic-relaxation phenomenon are discussed. Two alternative methods of the description of the reversible part of StepScan DSC record are compared: the empirical oneusing the exponential-power function [1 - exp(T/Tg)n], and the second one based on the van't Hoff's equation describing the temperature dependence of equilibrium constant in terms of reaction enthalpy, DH. The adequacy of the empirical description is rationalized in the framework of the Tool-Narayanaswamy- Moynihan's relaxation theory.

Název v anglickém jazyce

New features of the glass transition revealed by the StepScan(R) DSC

Popis výsledku anglicky

The results of StepScan DSC obtained for various oxides, chalcogenides, and organic glasses are discussed in connection with the commonly accepted theory of the glass transition. The new experimental features supporting the apparent idea of a reversibleequilibrium being a part of the glass transition that is commonly interpreted as purely kinetic-relaxation phenomenon are discussed. Two alternative methods of the description of the reversible part of StepScan DSC record are compared: the empirical oneusing the exponential-power function [1 - exp(T/Tg)n], and the second one based on the van't Hoff's equation describing the temperature dependence of equilibrium constant in terms of reaction enthalpy, DH. The adequacy of the empirical description is rationalized in the framework of the Tool-Narayanaswamy- Moynihan's relaxation theory.

Druh

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

CEP obor

BJ - Termodynamika

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název periodika

Journal of Thermal Analysis and Calorimetry (Paper)

ISSN

1388-6150

e-ISSN

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Svazek periodika

101

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

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Kód UT WoS článku

000279130700027

EID výsledku v databázi Scopus

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