Rheology of molten polymers

Code: CEM 106

Credits: 05

Elective subject


  • Introduction: definitions; Deborah number; equilibrium random conformation, relaxation time;
  • Vectors and Tensors;
  • Equation of: mass conservation; continuity; energy conservation and momentum equation;
  • Rheological equation of state for polymers;
  • Simple flows in polymer processing;
  • The importance of rheological properties to polymer processing (steady-state, oscillatory and transient regimes);
  • Rheometry;
  • Parameters affecting the flow properties (molecular structure, morphology, temperature and pressure);
  • Applications of rheology to extrusion, injection molding, blow extrusion and calendering.


  1. “Understanding Rheology”, Faith A.Morrison, Oxford University Press, 2001.
  2. “Reologia de Polímeros Fundidos”, R.E.S.Bretas e M.A.Davila, EDUFSCar, 2005.
  3. “Polymer Processing: Principles and Design”, D.G.Baird and D.I.Collias, John Wiley and Sons, 1998.
  4. “Dynamic of polymeric liquids”, Vol. 1, R.Byron Bird, 1977.