Gutenberg Open Science: Shear thinning : determination of zero-shear viscosities from measurements in the non-Newtonian region

Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-6232

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DC Field	Value	Language
dc.contributor.author	Wolf, Bernhard A.	-
dc.date.accessioned	2021-08-03T09:06:18Z	-
dc.date.available	2021-08-03T09:06:18Z	-
dc.date.issued	2020	-
dc.identifier.uri	https://openscience.ub.uni-mainz.de/handle/20.500.12030/6242	-
dc.description.abstract	Experimental information on the viscosities, η, of polymer solutions and of polymer melts as a function of shear rate is modeled by means of an approach that describes the diminution of ln η as a function of shear stress, τ, in terms of an exponential decay. The approach uses the following three adjustable parameters: the zero-shear viscosity of the system, a characteristic shear stress, quantifying its susceptibility toward shear thinning, and a dimensionless parameter stating the magnitude of the effect. This procedure gives access to the Newtonian behavior also in cases where direct measurements are impractical or impossible; it discloses two phenomena not reported so far: a qualitative change in the efficacy of τ at a characteristic concentration and indicates the occurrence of two different disentanglement mechanisms in thermodynamically unfavorable solvents.	en_GB
dc.language.iso	eng	de
dc.rights	CC BY-NC	*
dc.rights.uri	https://creativecommons.org/licenses/by-nc/4.0/	*
dc.subject.ddc	540 Chemie	de_DE
dc.subject.ddc	540 Chemistry and allied sciences	en_GB
dc.title	Shear thinning : determination of zero-shear viscosities from measurements in the non-Newtonian region	en_GB
dc.type	Zeitschriftenaufsatz	de
dc.identifier.doi	http://doi.org/10.25358/openscience-6232	-
jgu.type.dinitype	article	en_GB
jgu.type.version	Published version	de
jgu.type.resource	Text	de
jgu.organisation.department	FB 09 Chemie, Pharmazie u. Geowissensch.	de
jgu.organisation.number	7950	-
jgu.organisation.name	Johannes Gutenberg-Universität Mainz	-
jgu.rights.accessrights	openAccess	-
jgu.journal.title	Macromolecular chemistry and physics	de
jgu.journal.volume	221	de
jgu.journal.issue	14	de
jgu.pages.alternative	2000130	de
jgu.publisher.year	2020	-
jgu.publisher.name	Wiley-VCH	de
jgu.publisher.place	Weinheim	de
jgu.publisher.uri	https://doi.org/10.1002/macp.202000130	de
jgu.publisher.issn	1521-3935	de
jgu.organisation.place	Mainz	-
jgu.subject.ddccode	540	de
jgu.publisher.doi	10.1002/macp.202000130
jgu.organisation.ror	https://ror.org/023b0x485
Appears in collections:	JGU-Publikationen

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