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

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dc.title Effect of aging time on a glass transition of amorphous polymers at heating en
dc.contributor.author Hadač, Jiří
dc.contributor.author Říha, Pavel
dc.contributor.author Slobodian, Petr
dc.contributor.author Sáha, Petr
dc.contributor.author Kubát, Josef
dc.relation.ispartof Chemické listy
dc.identifier.issn 0009-2770 Scopus Sources, Sherpa/RoMEO, JCR
dc.identifier.issn 1213-7103 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2014
utb.relation.volume 108
utb.relation.issue SPEC. ISSUE 1
dc.citation.spage s59
dc.citation.epage s65
dc.type article
dc.language.iso en
dc.publisher Česká společnost chemická (ČSCH)
dc.relation.uri http://www.chemicke-listy.cz/common/content-issue_s1-volume_108-year_2014.html
dc.relation.uri http://www.chemicke-listy.cz/docs/full/2014_s1_s59-s65.pdf
dc.subject Glass transition en
dc.subject Physical aging en
dc.subject PMMA en
dc.subject Relaxation function en
dc.description.abstract 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 proposition underlying 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 glassy state is found to affect the material time scale while the relaxation functions are unchanged. en
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1003780
utb.identifier.obdid 43871823
utb.identifier.scopus 2-s2.0-84901818984
utb.identifier.wok 000344829700012
utb.identifier.coden CHLSA
utb.source j-scopus
dc.date.accessioned 2014-07-07T13:43:59Z
dc.date.available 2014-07-07T13:43:59Z
dc.description.sponsorship European Social Fund (ESF); national budget of the Czech Republic, within the project 'Advanced Theoretical and Experimental Studies of Polymer Systems' [CZ. 1.07/2.3.00/20.0104]; 'Research and Development for Innovations' Operational Programme - European Regional Development Fund (ERDF); national budget of the Czech Republic, within the project entitled 'Centre of Polymer Systems' [CZ.1.05/2.1.00/03.0111]
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Hadač, Jiří
utb.contributor.internalauthor Slobodian, Petr
utb.contributor.internalauthor Sáha, Petr
utb.contributor.internalauthor Kubát, Josef
utb.fulltext.affiliation JIŘÍ HADAC a , PAVEL RIHA b , PETR SLOBODIAN c ,PETR SAHA c, and JOSEF KUBÁT d,e a University Institute, Tomas Bata University in Zlin, Nad Ovcirnou 3685, 760 01 Zlín, b Institute of Hydrodynamics, Academy of Sciences of the Czech Republic, 166 12 Prague, c Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Nad Ovcirnou 3685, 760 01 Zlín, Czech Republic, d Chalmers University of Technology, Polymeric Materials and Composites, 412 96 Gothenburg, Sweden, e Polymer Centre, Faculty of Technology, Tomas Bata University in Zlin, nám. T.G. Masaryka 275, 762 72 Zlín, Czech Republic slobodian@ft.utb.cz
utb.fulltext.dates -
utb.fulltext.sponsorship This contribution was written with the support of the ´Operational Program Education for Competitiveness´ cofunded by the European Social Fund (ESF) and the national budget of the Czech Republic, within the project ´Advanced Theoretical and Experimental Studies of Polymer Systems´ (reg. number: CZ.1.07/2.3.00/20.0104) and with the support of the ‘Research and Development for Innovations’ Operational Program co-funded by the European Regional Development Fund (ERDF) and the national budget of the Czech Republic, within the project entitled ‘Centre of Polymer Systems’ (reg. number: CZ.1.05/2.1.00/03.0111) The authors acknowledge the Fund of Institute of Hydrodynamics AV0Z20600510 for the support also.
utb.fulltext.projects CZ.1.07/2.3.00/20.0104
utb.fulltext.projects CZ.1.05/2.1.00/03.0111
utb.fulltext.projects AV0Z20600510
utb.fulltext.ou Centre of Polymer Systems
utb.fulltext.ou Polymer Centre
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