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Humidity response of poly(butylene adipate-co-butylene terephthalate) copolyesters and their composites with wood flour determined by dynamic mechanical analysis

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dc.title Humidity response of poly(butylene adipate-co-butylene terephthalate) copolyesters and their composites with wood flour determined by dynamic mechanical analysis en
dc.contributor.author Milinkovic, Angela
dc.contributor.author Pastorek, Miroslav
dc.contributor.author Gregorová, Adriana
dc.relation.ispartof Thermochimica Acta
dc.identifier.issn 0040-6031 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2014
utb.relation.volume 590
dc.citation.spage 40
dc.citation.epage 50
dc.type article
dc.language.iso en
dc.publisher Elsevier Science B.V.
dc.identifier.doi 10.1016/j.tca.2014.06.010
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S0040603114002718
dc.subject Aliphatic-aromatic copolyesters en
dc.subject Crystallinity en
dc.subject Dynamic mechanical analysis en
dc.subject Mechanical properties en
dc.subject Relative humidity en
dc.subject Viscoelastic properties en
dc.description.abstract This study investigated the mechanical and viscoelastic properties of poly(butylene adipate-co-butylene terephthalate) copolyesters, P(BA-co-BT)s and their composites, P(BA-co-BT)-WF with 20 vol.% of beech wood flour (WF) at dry (N2) and in humid atmosphere (50% RH) using a large temperature range from 20 to 90 °C. The melting behaviour of P(BA-co-BT) copolyesters were studied with differential scanning calorimetry (DSC) and wide-angle X-ray analysis. The increase of the aromatic moiety as well as reinforcement with WF improved stiffness of copolyesters. The ambient testing environment with the increased temperature negatively impacted the stiffness and strain properties of P(BA-co-BT)s as well as P(BA-co-BT)-WF composites. The loss of mechanical properties was accelerated in humid atmosphere due to hydrolytic degradation of the ester linkage in copolymers. It was determined that wood flour used as a reinforcement slightly contributed to the hygrothermal aging of P(BA-co-BT) composites. Understanding the effect of humid atmosphere combined with dynamic changed temperature provides useful information for the assessment of the hygrothermal stability of biodegradable polyesters. © 2014 Elsevier B.V. en
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1003815
utb.identifier.obdid 43871797
utb.identifier.scopus 2-s2.0-84903205869
utb.identifier.wok 000340853100004
utb.identifier.coden THACA
utb.source j-scopus
dc.date.accessioned 2014-08-05T09:56:19Z
dc.date.available 2014-08-05T09:56:19Z
dc.description.sponsorship European Regional Development Fund (ERDF); Federal Ministry of Economy, Family and Youth; National Foundation for Research, Technology, and Development, Austria; National Budget of Czech Republic, within the framework of the project Centre of Polymer Systems [CZ.1.05/2.1.00/03.0111]
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Pastorek, Miroslav
utb.fulltext.affiliation Angela Milinkovic a , Pastorek Miroslav b , Adriana Gregorova a,* a Institute for Chemistry and Technology of Materials, Graz University of Technology, Stremayrgasse 9, Graz, Austria b Centre of Polymer Systems, Tomas Bata University in Zlin, Nad Ovcirnou 3685, 760 01 Zlin, Czech Republic *Corresponding author. Tel.: +43 316 873 32305; fax: +43 316 873 32302. E-mail addresses: adrianagregorova@yahoo.com, adriana.gregorova@tugraz.at (A. Gregorova).
utb.fulltext.dates Received 13 March 2014 Received in revised form 16 May 2014 Accepted 11 June 2014 Available online 14 June 2014
utb.fulltext.sponsorship European Regional Development Fund (ERDF) through project: Future Innovation – Regional Competitiveness Styria 2007–2013, Project – DMA analyser 2012. Financial support by the Federal Ministry of Economy, Family and Youth and the National Foundation for Research, Technology, and Development, Austria and the National Budget of Czech Republic, within the framework of the project Centre of Polymer Systems (CZ.1.05/2.1.00/03.0111) are gratefully acknowledged.
utb.fulltext.projects CZ.1.05/2.1.00/03.0111
utb.fulltext.faculty University Institute
utb.fulltext.ou Centre of Polymer Systems
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