Właściwości reologiczne wodnych roztworów poliakryloamidu i hydroksyetylocelulozy w przepływie rozciągającym i ścinającym

S. Różańska

doi:10.14314/polimery.2015.657

Published : 2015-10-30

Vol. 60 No. 10 (2015)

Rheological properties of aqueous solutions of polyacrylamide and hydroxyethylcellulose in extensional and shear flow

S. Różańska

DOI: https://doi.org/10.14314/polimery.2015.657

Abstract

The aim of this work was to compare the rheological properties in shear and extensional flow of polymer aqueous solutions: ionic polyacrylamide (Rokrysol WF2), non-ionic partially hydrolyzed polyacrylamide (Rokrysol WF1) and hydroxyethylcellulose (HEC) — differing in the structure of the polymer chain. Extensional viscosity measurements were made with an opposed-nozzle self-designed device. The experimental results show that polymers with a flexible chain structure (WF1, WF2) have higher values of the apparent extensional viscosity and Trouton ratio TrB. In the rheometric curves of Rokrysol WF1 and WF2 solutions the shear thinning and shear thickening ranges can be observed. In the case of the polymer having a rigid chain structure (HEC) the Trouton number shows an approximately constant value between 3 and 5 s-1 in the range of the apparent strain rate from 1 to 8 s-1. At higher strain rate values (εα) the TrB increases to about 41.

Keywords

lepkość wzdłużna ; stosunek Troutona ; reometr wzdłużny ; polimery extensional viscosity ; Trouton ratio ; extensional rheometer ; polymers

Details

References

Statistics

Authors

Download files

PDF (Język Polski)

Zasady cytowania

Różańska, S. (2015). Rheological properties of aqueous solutions of polyacrylamide and hydroxyethylcellulose in extensional and shear flow. Polimery, 60(10), 657–663. https://doi.org/10.14314/polimery.2015.657

Altmetric indicators

Citing articles via

Statistics

Total abstract views : 0

PDF Downloads : 0