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4725770 
Journal Article 
Flow Instabilities in Concentrated Polymer Solutions and Melts 
Moewes, MM; Klueppel, M 
2011 
1 
KGK Kautschuk, Gummi, Kunststoffe
ISSN: 0948-3276 
64 
4 
29-37 
WOS:000289871000004 
In this work we present a summary over flow anomalies of rubber melts. These lead to limitations for the rubber producing industry for extrusion products. Effects on the surface like Shark Skin or Stick Slip make the surface unsteady. The entropic segregation of polymer and accordingly solvent create a radial solvent concentration profile corresponding to an inhomogeneous product. Instabilities like helical or even chaotic flow and accordingly melt fracture destroy the extrudate completely. 
Elastic turbulence; Flow instability; Nitrile butadiene rubber; Softener; Sebacic acid dibutyl ester; Wall slip; Entropic segregation; Natural rubber; Carbon black; Multiwall carbon nanotubes (MWCNT) 
OPPT
• Dibutyl sebacate
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