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Volume and enthalpy relaxation in a-PMMA after temperature up-jumps

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dc.title Volume and enthalpy relaxation in a-PMMA after temperature up-jumps en
dc.contributor.author Slobodian, Petr
dc.contributor.author Lengálová, Anežka
dc.contributor.author Sáha, Petr
dc.relation.ispartof Journal of Thermal Analysis and Calorimetry
dc.identifier.issn 1388-6150 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2003
utb.relation.volume 71
utb.relation.issue 2
dc.citation.spage 387
dc.citation.epage 393
dc.type article
dc.language.iso en
dc.publisher Kluwer Academic Publishers en
dc.identifier.doi 10.1023/A:1022827104029
dc.relation.uri http://www.springerlink.com/content/v5590109085w2532/
dc.subject a-PMMA en
dc.subject enthalpy relaxation en
dc.subject memory effect en
dc.subject physical aging en
dc.subject volume relaxation en
dc.description.abstract The volume and enthalpy relaxation in a-PMMA subjected to temperature jumps in T-g region has been analysed. The measured Hand Vdata were compared with respect to aging time and proportionality between them as a slope of (partial derivativeH/partial derivativeV)(T) dependencies has been found. According to previous works the slope was identified as an apparent bulk modulus, K-a. This method is applied to aging following temperature up-jumps after consolidation periods of varying lengths. The main finding is a marked increase of K-a with consolidation time, approaching a limiting value in an asymptotic fashion. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1002036
utb.identifier.scopus 2-s2.0-0037288337
utb.identifier.wok 000181454400008
utb.identifier.coden JTACF
utb.source j-wok
dc.date.accessioned 2011-08-16T15:06:13Z
dc.date.available 2011-08-16T15:06:13Z
utb.contributor.internalauthor Slobodian, Petr
utb.contributor.internalauthor Lengálová, Anežka
utb.contributor.internalauthor Sáha, Petr
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