The flow of viscoelastic fluids in an opposed jets rheometer and a Fano flow rheometer

• Autorzy: Wilkes C. , Gampert B.
• Konferencja: Second International Conference on Engineering Rheology ICER 2003
• Języki publikacji: EN

Abstrakty

EN

The elongational rheometer used for this work is an opposed jet rheometer, which allows elongational flow measurements of highly dilute polymer solutions. The polymer concentrations can be lower than the critical concentration under steady state conditions and lower than the critical concentration in the case of flow conditions. A further experimental set up was used for characterising the viscoelastic fluids. The working method of this apparatus is the tubeless siphon or Fano flow, which can be understood approximately as the reverse fibre spinning process. The beginning of the fibre spinning process can be applied in order to determine the critical concentration . The experimental investigations undertaken here were carried out using a commercial, anionic polyacrylamide with a relatively high molar mass and hydrolysis factor. The polyacrylamide was dissolved in highly pure water. Sodium chloride with different concentrations was added to the solutions to control the partial neutralisation of negative charges at the ends of the polymer chains.

Słowa kluczowe

EN

elongational flow; viscoelastic fluids; opposed jets; Fano flow; critical concentration

PL

mechanika; płyn lepkosprężysty; przepływ

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2003
• Tom: Vol. 8, no spec.
• Strony: 319--324
• Opis fizyczny: Bibliogr. 16 poz., rys., wykr.

Twórcy

autor

Wilkes C.

• Angewandte Mechanik, Universität Essen Schützenbahn 70, 45127 Essen, GERMANY

autor

Gampert B.

• Angewandte Mechanik, Universität Essen Schützenbahn 70, 45127 Essen, GERMANY

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