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Rheological Behaviour of Polypropylene Blends utilized in Foaming Process

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dc.title Rheological Behaviour of Polypropylene Blends utilized in Foaming Process en
dc.contributor.author Piyamanocha, Pongprapat
dc.contributor.author Sedláček, Tomáš
dc.contributor.author Polášková, Martina
dc.contributor.author Filip, Petr
dc.contributor.author Sáha, Petr
dc.relation.ispartof Latest Trends on Engineering Mechanics, Structures, Engineering Geology
dc.identifier.isbn 978-960-474-203-5
dc.date.issued 2010
dc.citation.spage 275
dc.citation.epage 278
dc.event.title 3rd WSEAS International Conference on Engineering Mechanics, Structures, Engineering Geology/International Conference on Geography and Geology
dc.event.location Corfu Island
utb.event.state-en Greece
utb.event.state-cs Řecko
dc.event.sdate 2010-07-22
dc.event.edate 2010-07-24
dc.type conferenceObject
dc.language.iso en
dc.publisher World Scientific and Engineering Academy and Society (WSEAS) en
dc.relation.uri http://www.wseas.us/e-library/conferences/2010/Corfu/EMEGEO/EMEGEO-48.pdf
dc.subject polypropylene foam en
dc.subject rheology en
dc.subject strain hardening en
dc.subject foam morphology en
dc.subject pressure dependent viscosity en
dc.description.abstract Morphological structure of polypropylene foams represented by the size of the bubbles and bubbles density is significantly affected by rheological properties of the source materials. Various blends of high molecular weight and high melt strength polypropylenes were prepared in a twin screw extruder, and subsequently foamed. Their shear flow behavior as well as strain hardening during elongation were found to be the factors of a key importance in foaming process optimization. In addition, pressure dependent shear flow behavior of the tested materials was determined using capillary rheometer modified with backpressure chamber, and obtained dependencies of shear viscosity on pressure conditions were analyzed in order to further tailor blend compositions regarding their following use in foaming processes. It has been demonstrated that foam morphology might be controlled not only through degree of bubble coalescence and nucleation rate by the help of optimizing of material components ratio, but also via setting the proper processing conditions. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1001746
utb.identifier.rivid RIV/67985874:_____/10:00361355!RIV12-AV0-67985874
utb.identifier.obdid 43864721
utb.identifier.scopus 2-s2.0-79958847596
utb.identifier.wok 000288686900053
utb.source d-wok
dc.date.accessioned 2011-08-09T07:33:46Z
dc.date.available 2011-08-09T07:33:46Z
utb.contributor.internalauthor Piyamanocha, Pongprapat
utb.contributor.internalauthor Sedláček, Tomáš
utb.contributor.internalauthor Polášková, Martina
utb.contributor.internalauthor Sáha, Petr
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