Type of manuscripts

This page presents a summary of research papers which have been published or presented at international conferences.

When applicable, the paper or abstract is available for download in *.pdf format.

R&D fresh published papers for for modelling viscoelasticity, detecting MWD from viscosity measurements and CFD simulations:

• "Linear viscoelastic models
  Part I. Relaxation modulus and melt calibration" by Tommi Borg and Esko J. Pääkkönen. Paper is published in Journal of Non-Newtonian Fluid Mechanics 156 (2009) 121–128. Doi: 10.1016/j.jnnfm.2008.07.011. This is also freely downloadable at their Sample Issue Online (January 2009).


• "Linear viscoelastic models
  Part II. Recovery of the molecular weight distribution using viscosity data" by Tommi Borg and Esko J. Pääkkönen. Paper is published in Journal of Non-Newtonian Fluid Mechanics 156 (2009) 129–138. Doi: 10.1016/j.jnnfm.2008.07.010. This is also freely downloadable at their Sample Issue Online (January 2009).


• "Linear viscoelastic models
  Part III. Start-up and transient flow effects from the molecular weight distribution" by Tommi Borg and Esko J. Pääkkönen. Paper is published in Journal of Non-Newtonian Fluid Mechanics 159 (2009) 17–25. Doi: 10.1016/j.jnnfm.2008.11.014


• "Linear viscoelastic models.
  Part IV. From molecular dynamics to temperature and viscoelastic relations using control theory" by Tommi Borg and Esko J. Pääkkönen. Paper is published in Journal of Non-Newtonian Fluid Mechanics 165 (2010) 24-31. Doi: 10.1016/j.jnnfm.2009.08.008. This is also freely downloadable at their Sample Issue Online (January 2010).

Orally presented papers:

This is a good review for research developments in theory during years along with heavy software coding and numerical breaking.

• "Polymer characterization and practical linear viscoelastic models by control theory". My Powerpoint presentation is shown on PDF file. Presented at AREC 2010, 6th Annual European Rheology Conference April 7-9, Göteborg - Sweden.
• "Practical linear viscoelastic models by control theory"Presentation at ICPPC - 2010, Second International Conference on Polymer Processing and Characterization, January 15-17, Kottayam - India.
• "TEMPERATURE DEPENDENCE OF POLYMER FLOWS BY CONTROL THEORY" This paper was presented at AERC 2009, 5th Annual European Rheology Conference April 15-17, Cardiff - United Kingdom.
• "Start-up and Transient Flow Effects From the Molecular Weight Distribution" This paper was presented at XVth Int. Congr. on Rheology August 3-8, 2008 in Monterey, California, USA.
• "Detecting Molecular Weight Distribution from Viscoelastic Measurements and Relation by Melt Calibration" This paper was presented at 4th Annual European Rheology Conference held April 12-14, 2007 in Napoli, Italy.
• "Determining the Molecular Weight Distribution From Viscosity Measurements at Different Temperatures" by Tommi Borg and Esko J. Pääkkönen. This paper was presented at XIVth Int. Congr. on Rheology August 22-27, 2004 in Seoul, Korea.
• "Time Dependency of Viscosity in the Flow Simulations" by Tommi Borg, Martti Keinonen, Petteri Poranen and Esko J. Pääkkönen. This paper is presented at XIVth Int. Congr. on Rheology August 22-27, 2004 in Seoul, Korea.
• "Determining The Molecular Weight Distribution From Viscosity Measurements" by T. Borg and E. J. Pääkkönen. This paper was presented at 6th European Conference on Rheology held September 1-6, 2002 in Erlangen, Germany.
• "MWD computations from viscosity and vice versa by new linear model" by T. Borg and E. J. Pääkkönen. Abstract describes presentation at 2nd Workshop on Inverse Problems in Rheology and Related Experimental Techniques, held in Badenweiler, Germany May 9-11 2001.
• "Molecular Weight Distribution and Property Computations by the Energy Model of Viscoelasticity" by T. Borg and E. J. Pääkkönen. Abstract describes presentation at the Nordic Rheology conference held in Helsinki, June 7-9, 2000.
• "Rheology calculations and linear polymer viscoelasticity" by T. Borg and E. J. Pääkkönen. Abstract describes presentation at Symposium of Chain Structure Relationships in Polymer, held at Isaac Newton Institute, Cambridge, UK, May, 14-15 1996.