Haake mars 60 rheometer
The HAAKE MARS 60 rheometer is a high-performance instrument for rheological measurements. It is designed to characterize the flow and deformation properties of a wide range of materials, including polymers, dispersions, and complex fluids. The rheometer provides precise control over shear, strain, and temperature, enabling accurate and reproducible measurements of various rheological parameters.
21 protocols using haake mars 60 rheometer
Rheological Characterization of Cream Formulations
Rheological Analysis of Samples
Viscosity measurements were also performed using a Rotavisc Lo-vi viscosimeter (IKA®, Werke GmnH & Co. KG, Mindelheim, Germany) with SP12 spindle at 1 rpm. These measurements were performed at 20 °C.
Rheological Characterization of Polymer Curing
Rheological Characterization of ABPBI Solutions
cone-plate with a diameter of 20 mm and an angle between the cone and the plate of 1° (for solutions containing 9% of ABPBI);
cone-plate with a diameter of 60 mm and an angle between the cone and the plate of 1° (for solutions containing 7% of ABPBI);
a bicone with a diameter of 60 mm and an angle between the cone and the plates of 1° (for solutions with ABPBI content of 3%).
In the stationary deformation mode, the flow curves were obtained in the range of shear rates 10–1–103 s–1. To determine the area of linear viscoelasticity for the subsequent measurement of the frequency dependences of the storage and loss moduli, the complex modulus of elasticity was preliminarily measured in the strain range of 0.1–100% at frequencies of 1 Hz (6.3 rad∙s−1) and 80 Hz (503 rad∙s−1). The frequency dependences of the storage and loss moduli in the linear region were measured in the frequency range of 0.628–628 rad∙s−1.
The intrinsic viscosities were measured by an Ubbelohde capillary viscometer at 25 °C following ASTM D2857 [27 ].
High-Temperature Fracturing Fluid Stability
The shear rate was set to 170 s−1 and the heating rate was 1.8 °C/min. After reaching the target temperature, the viscosity change was observed after constant temperature shearing for 60 min. The industry standard requires that the viscosity of fracturing fluid should be at least 20 mPa·s to meet the requirements of fracturing fluid transportation proppants [25 (link),44 (link),49 ].
Preparation and Characterization of Cellulose-PAN-NMMO Solutions
The viscosity of the solutions was evaluated on a HAAKE MARS 60 Rheometer (ThermoFisher Scientific, Dreieich, Germany) and a Physica MCR 301 (Anton Paar, GmbH, Graz, Austria) rotary rheometer. As operating units, a cone-plane with a diameter of 20 mm and an angle of one degree under steady-state deformation in the shear stress τ range of 10–106 Pa and a cylinder-cylinder unit with an inner diameter of 10 mm were used. To exclude contact of the sample with the environment, the end of the gap was surrounded with PMS-100 silicone oil (Silan, Moscow, Russia). The tests were carried out in the temperature range of 110–130 °C.
The morphology of solutions was studied using polarizing microscopy (Boetius microscope, VEB Kombinat Nadema, Ruhla, Germany, former DDR).
Rheological Characterization of Gels
The gels were kept in the measuring cell for 15 min before the measurements for the temperature stabilization.
At each temperature, the samples were measured in the following regimes:
Oscillation to obtain frequency dependences of the storage and loss moduli in the linear viscoelasticity range. The strain value was 0.5% and the frequency varied from 0.05 to 100 Hz;
Shear rate control mode to obtain flow curves; the shear rate was increased from 0.004 to 5000 s−1 in a step-wise mode, with a duration of deformation of 30 s at every shear rate step.
Rheological Characterization of Emulsions
Rheological Properties of Surimi Pastes
Viscosity Measurement of Paliperidone Derivatives
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