Abstract
We describe experimental results on the extensional viscosity of mobile polymer solutions obtained from two instruments, the first being a commercial Spin Line Rheometer and the second a custom-built lubricated-die Converging Flow Rheometer. The interpretation of data in terms of Trouton ratios is facilitated by a simple analysis for the Generalized Newtonian Fluid model.
Agreement between data from the two rheometers is satisfactory and we show that polymer solutions can be either tension stiffening or tension thinning. However, the Trouton ratios in both cases are greater than the Newtonian values and we anticipate that this will always be the case for polymer solutions.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Petrie CJS (1979) Elongation flow. Pitman
Walters K (1975) Rheometry. Chapman and Hall
Meissner J (1983) Plenary and Invited Lectures, Part 2. IUPAC Macro 83, Bucharest, Romania, p 203–206
Crochet MJ, Davies AR, Walters K (1984) Numerical Simulation of non-Newtonian Flow. Elsevier
Jackson KP, Walters K, Williams RW (1984) J Non-Newtonian Fluid Mech 14:173–188
Buscall R, Bye DJ, Miles IS (1985) J Non-Newtonian Fluid Mech 17:193–202
Williams PR, Williams RW (1985) J Non-Newtonian Fluid Mech 19:53–80
Gupta RK, Sridhar T (1984) Proc 9th Intern Congr Rheology. Mexico, vol 4, p 71–76
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Jones, D.M., Walters, K. & Williams, P.R. On the extensional viscosity of mobile polymer solutions. Rheol Acta 26, 20–30 (1987). https://doi.org/10.1007/BF01332680
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01332680