Elongational viscosity of narrow molar mass distribution star and pom-pom polystyrene

Henrik K. Rasmussen, Jens Kromann Nielsen, Ole Hassager, Kristoffer Almdal

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

We have measured the transient and steady uniaxial elongational viscosity, using the filament stretching rheometer (FSR), of two narrow molar mass distribution (MMD) long-chain branched polystyrene melts: AnBAm (a ‘pom-pom’ molecule) and AnB (a ‘asymmetric star’ molecule). The elongational viscosities for the 'pom-pom' molecule are separable in time and strain for times less than the reptation time. Separability was not observed in the elongational viscosities for the ‘asymmetric star’ molecule.
Original languageEnglish
Title of host publicationPPS-22 Proceedings
Place of PublicationYamagata
PublisherPolymer Processing Society
Publication date2006
Publication statusPublished - 2006
Event22nd Annual Meeting Polymer Processing Society - Yamagata, Japan
Duration: 2 Jul 20066 Jul 2006
Conference number: 22

Conference

Conference22nd Annual Meeting Polymer Processing Society
Number22
CountryJapan
CityYamagata
Period02/07/200606/07/2006

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