Reference : Experimental separation of the onset of slip and sharkskin melt instabilities during ...

	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/10993/53372

Title :	Experimental separation of the onset of slip and sharkskin melt instabilities during the extrusion of silica‑filled, styrene–butadiene rubber compounds
Language :	English
Author, co-author :	Gansen, Alex [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) >]
	Řehoř, Martin [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Computer Science and Communications Research Unit (CSC) > > Institute of Computational Engineering]
	Sill, Clemens [Goodyear Innovation Center Luxembourg]
	Polińska, Patricia [Goodyear Innovation Center Luxembourg]
	Westermann, Stephan [Luxembourg Institute of Science & Technology - LIST > Functional Polymers Unit]
	Dheur [Goodyear Innovation Center Luxembourg]
	Baller, Jörg [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) >]
Publication date :	23-Nov-2022
Journal title :	Rheologica Acta
Publisher :	Springer
Peer reviewed :	Yes
Audience :	International
ISSN :	0035-4511
Country :	Germany
Keywords :	[en] SBR ; Melt instabilities ; Slip ; Sharkskin ; Stick–slip
Abstract :	[en] The flow curves of polymers often reveal the onset of melt instabilities such as sharkskin, stick–slip, or gross melt fracture, in order of increasing shear rates. The focus of this work lies in the application of the Göttfert sharkskin option to the investigation of flow curves of styrene-butadiene rubber (SBR) compounds. The sharkskin option consists of highly sensitive pressure transducers located inside a slit die of a capillary rheometer. This tool allows the detection of in-situ pressure fluctuation characteristics of different melt instabilities. It is shown that the change of slope of the transition region in the flow curves is only linked to slip. Dynamic Mechanical Analysis (DMA) measurements furthermore show that the shear rate at which the change of slope can be observed shows the same temperature dependency as the viscous and elastic properties of the compounds.
Target :	Researchers ; Professionals
Permalink :	http://hdl.handle.net/10993/53372
DOI :	10.1007/s00397-022-01376-7
Other URL :	https://link.springer.com/article/10.1007/s00397-022-01376-7#citeas

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