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Reološko ponašanje termoplastičnih poli(estar-siloksana)

dc.creatorAntić, Vesna
dc.creatorPergal, Marija
dc.creatorAntić, Mališa P.
dc.creatorĐonlagić, Jasna
dc.date.accessioned2019-01-30T17:24:28Z
dc.date.available2019-01-30T17:24:28Z
dc.date.issued2010
dc.identifier.issn0367-598X
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/727
dc.description.abstractTwo series of thermoplastic elastomers (TPES), based on poly(dimethylsiloxane) (PDMS) as the soft segment and poly(butylene terephthalate) (PBT) as the hard segment, were analyzed by dynamic mechanical spectroscopy. In the first TPES series the lengths of both hard and soft segments were varied while the mass ratio of the hard to soft segments was nearly constant (about 60 mass%). In the second series, the mass ratio of hard and soft segments was varied in the range from 60/40 to 40/60, with a constant length of soft PDMS segments. The influence of the structure and composition of TPESs on the rheological properties, such as complex dynamic viscosity, μ*, the storage, G', and loss, G', shear modulus as well as the microphase separation transition temperature, TMST, was examined. The obtained results showed that the storage modulus of the TPESs increased in a rubbery plateau region with increase in degree of crystallinity. The rheological measurements of TPESs also showed that a microphase reorganization occurred during the melting process. The microphase separation transition temperatures were in the range from 220 to 234°C. In the isotropic molten state, the complex dynamic viscosity increased with increasing both the content and length of hard PBT segments.en
dc.description.abstractDve serije termoplastičnih elastomera (TPES) na bazi poli(dimetilsiloksana) kao mekog segmenta i poli(butilentereftalata) kao tvrdog segmenta su analizirane dinamičko-mehaničkom spektroskopijom. U prvoj TPES seriji varirane su dužine tvrdih i mekih segmenata dok je njihov maseni odnos bio skoro konstantan (oko 60 mas%). U drugoj seriji, odnos tvrdih i mekih segmenata je variran u opsegu od 60/40 do 40/60, dok je dužina mekih PDMS segmenata bila konstantna. Ispitan je uticaj strukture i sastava TPES kopolimera na reološka svojstva, kao što su kompleksni dinamički viskozitet, μ*, moduli sačuvane, G', i izgubljene energije, G', i temperatura mikrofaznog razdvajanja, TMST. Dobijeni rezultati su pokazali da su uzorci sa većim stepenom kristaliničnosti imali i veće module sačuvane energije u gumolikom platou. Reološka merenja su takođe pokazala da svi TPES uzorci ispoljavaju mikrofaznu reorganizaciju u procesu topljenja. Temperature mikrofaznog razdvajanja su bile u opsegu od 220 do 234°C. U izotropskom rastopu, kompleksni dinamički viskoziteti su rasli sa povećanjem sadržaja i dužine PBT segmenata.sr
dc.publisherAssociation of Chemical Engineers of Serbia
dc.relationinfo:eu-repo/grantAgreement/MESTD/MPN2006-2010/142023/RS//
dc.rightsopenAccess
dc.sourceHemijska industrija
dc.subjectpoly(ester-siloxane)sen
dc.subjectrheologyen
dc.subjectcomplex dynamic viscosityen
dc.subjectstorage and loss shear modulusen
dc.subjectmicrophase separation transition temperatureen
dc.subjectpoli(estar-siloksani)sr
dc.subjectreologijasr
dc.subjectkompleksni dinamički viskozitetsr
dc.subjectmoduli sačuvane i izgubljene energijesr
dc.subjecttemperatura mikrofaznog razdvajanjasr
dc.titleRheological behaviour of thermoplastic poly(ester-siloxane)sen
dc.titleReološko ponašanje termoplastičnih poli(estar-siloksana)sr
dc.typearticle
dc.rights.licenseBY-NC-ND
dcterms.abstractAнтић, Весна В.; Aнтић, Малиша П.; Ђонлагић, Јасна A.; Пергал, Марија; Реолошко понашање термопластичних поли(естар-силоксана); Реолошко понашање термопластичних поли(естар-силоксана);
dc.citation.volume64
dc.citation.issue6
dc.citation.spage537
dc.citation.epage545
dc.citation.other64(6): 537-545
dc.citation.rankM23
dc.identifier.doi10.2298/HEMIND101015067A
dc.identifier.rcubConv_408
dc.identifier.fulltexthttp://cer.ihtm.bg.ac.rs//bitstream/id/9343/725.pdf
dc.identifier.scopus2-s2.0-78651251191
dc.identifier.wos000287224600007
dc.type.versionpublishedVersion


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