Structural Relaxation Rate and Aging in Amorphous Solids

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F23%3A39920252" target="_blank" >RIV/00216275:25310/23:39920252 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.acs.org/doi/10.1021/acs.jpcc.3c00637" target="_blank" >https://pubs.acs.org/doi/10.1021/acs.jpcc.3c00637</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpcc.3c00637" target="_blank" >10.1021/acs.jpcc.3c00637</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Structural Relaxation Rate and Aging in Amorphous Solids

Popis výsledku v původním jazyce

The structural relaxation in amorphous materials is discussed within the Tool-Narayanaswamy-Moynihan model (TNM), the Kovacs-Aklonis- Hutchinson-Ramos model (KAHR), and the entropy-based Adam-Gibbs- Scherer-Hodge model (AGSH). These three phenomenological models are most frequently used for the description of experimental structural relaxation data by a suitable set of parameters obtained by curve fitting. The parameter sets reported in the literature for 250 different amorphous material compositions are analyzed on the basis of the isothermal relaxation rate R depending on the nonexponentiality parameter fi and the nonlinearity contribution, defined for the TNM, KAHR, and AGSH models as a = -(dln z/dTf)i. The R10 calculated at 10 K below Tg represents a scale for the structural relaxation rate. It describes the structural relaxation kinetics in very different amorphous materials such as organic polymers, epoxy resins, sugars, hydrated starch, simple organic molecules, oxide glasses, chalcogenide glasses, halide glasses, metallic glasses, volcanic glasses, and tektite. This approach can be used for the kinetic comparison of structural relaxation behavior in different amorphous materials as well as in the assessment of the aging treatment and composition design for their future applications.

Název v anglickém jazyce

Structural Relaxation Rate and Aging in Amorphous Solids

Popis výsledku anglicky

The structural relaxation in amorphous materials is discussed within the Tool-Narayanaswamy-Moynihan model (TNM), the Kovacs-Aklonis- Hutchinson-Ramos model (KAHR), and the entropy-based Adam-Gibbs- Scherer-Hodge model (AGSH). These three phenomenological models are most frequently used for the description of experimental structural relaxation data by a suitable set of parameters obtained by curve fitting. The parameter sets reported in the literature for 250 different amorphous material compositions are analyzed on the basis of the isothermal relaxation rate R depending on the nonexponentiality parameter fi and the nonlinearity contribution, defined for the TNM, KAHR, and AGSH models as a = -(dln z/dTf)i. The R10 calculated at 10 K below Tg represents a scale for the structural relaxation rate. It describes the structural relaxation kinetics in very different amorphous materials such as organic polymers, epoxy resins, sugars, hydrated starch, simple organic molecules, oxide glasses, chalcogenide glasses, halide glasses, metallic glasses, volcanic glasses, and tektite. This approach can be used for the kinetic comparison of structural relaxation behavior in different amorphous materials as well as in the assessment of the aging treatment and composition design for their future applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Journal of Physical Chemistry C

ISSN

1932-7447

e-ISSN

1932-7455

Svazek periodika

127

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

6080-6087

Kód UT WoS článku

000961788200001

EID výsledku v databázi Scopus

2-s2.0-85150443172