Effect of aging time on a glass transition of amorphous polymers at heating

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F14%3A43871604" target="_blank" >RIV/70883521:28610/14:43871604 - isvavai.cz</a>

Alternative codes found

RIV/67985874:_____/14:00429166

Result on the web

<a href="http://www.chemicke-listy.cz/docs/full/2014_s1_s59-s65.pdf" target="_blank" >http://www.chemicke-listy.cz/docs/full/2014_s1_s59-s65.pdf</a>

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Effect of aging time on a glass transition of amorphous polymers at heating

Original language description

The relaxation and consolidation processes accompanying the glass transition are linked in this paper with an induction mechanism introducing a cooperative character of relaxation into those processes. The induction mechanism supplements the propositionunderlying the internal energy material clock used in a recently developed thermodynamically consistent non-linear viscoelastic theory modeling thermal and mechanical behavior of amorphous polymers in the glass transition range1,2. The mechanism is introduced into the constitutive theory framework where it replaces the stretched exponential relaxation functions. The proposed modification is used to describe the dilatometric behavior of PMMA during heating from the glassy state after varying aging times.The modified theoretical approach is found to produce a fairly good description of the peaks in thermal expansivity, both with regard to their intensity and position along the temperature axis. The length of the aging period in the glass

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CD - Macromolecular chemistry

OECD FORD branch

—

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2014

Confidentiality

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

Name of the periodical

Chemické listy

ISSN

0009-2770

e-ISSN

—

Volume of the periodical

108

Issue of the periodical within the volume

S1

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

7

Pages from-to

59-65

UT code for WoS article

000338630400011

EID of the result in the Scopus database

—