Characterization of the solutions
The surface tension of the solutions was measured using the
Wilhemy plate method in an EasyDyne K20 tensiometer (Krüss
GmbH, Hamburg, Germany) at room temperature.
The electrical conductivity of the solutions was measured using
a conductivity meter XS Con6 (Labbox, Barcelona, Spain) at room
temperature.
The rheological behaviour of the solutions was studied using a
rheometer model AR-G2 (TA Instruments, USA), with a parallel plate
geometry. The stainless steel plate diameterwas 60mmand the gap
was fixed to 0.5 mm. The tests were performed at a controlled
temperature of 25 C ± 0.1 C. Continuous shear rate ramps were
performed from 0.1 to 200 s1 during 15 min after equilibrating the
samples for 5 min, and the shear stress of the samples was registered.
All measurements were made at least in triplicate.
Characterization of the solutionsThe surface tension of the solutions was measured using theWilhemy plate method in an EasyDyne K20 tensiometer (KrüssGmbH, Hamburg, Germany) at room temperature.The electrical conductivity of the solutions was measured usinga conductivity meter XS Con6 (Labbox, Barcelona, Spain) at roomtemperature.The rheological behaviour of the solutions was studied using arheometer model AR-G2 (TA Instruments, USA), with a parallel plategeometry. The stainless steel plate diameterwas 60mmand the gapwas fixed to 0.5 mm. The tests were performed at a controlledtemperature of 25 C ± 0.1 C. Continuous shear rate ramps wereperformed from 0.1 to 200 s1 during 15 min after equilibrating thesamples for 5 min, and the shear stress of the samples was registered.All measurements were made at least in triplicate.
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