Rheology as a Suitable Tool for Quality Control of Collagen Hydrogels
Here, a standard operating procedure (SOP) for determining the quality of collagen hydrogel was developed using oscillatory rheology with a DHR-2 rheometer.
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Polymer Melt Rheology Workflow Automation: Auto-Trim Accessory for Discovery Hybrid Rheometers
The auto-trim accessory for Discovery Hybrid Rheometers automates the melting, gap setting, and crucial sample trimming step in polymer melt rheology testing. The automation of this step improves data consistency by up to 5x, increases continuous walkaway time by 80%, and reduces new operator training time to less than 30 minutes.
DetailsUsing an ARES Rheometer to investigate the β-relaxation change of graphene poly(ethyl methacrylate) nanocomposite
Here we describe the application of an ARES Rheometer (TA Instruments) with a rectangular torsion fixture, to investigate the β-relaxation change of poly (ethyl methacrylate)/ graphene oxide. It is observed that graphene increases both the glass transition and the β-relaxation temperature, but the β-relaxation to a lesser extent.
DetailsEffect of Moisture on Cohesion Strength of Carboxymethyl Cellulose Powder
The impact of moisture content on cohesion strength is measured using the TA Instruments Powder Rheology Accessory. It was found that as moisture content increases, cohesion strength also increases, demonstrating the importance of controlling humidity during processing.
DetailsEpoxy Powder Rheology: Impact of Temperature on Flow and Shear Properties
TA Instruments Powder Rheology Accessory for Temperature Control is used to study a filled epoxy resin for powder coatings. The results show that care must be taken in storage and processing, even at temperatures below the glass transition due to the effects on flowability and cohesion.
DetailsEffect of Moisture and Substrate Material on Wall Friction Angle of Carboxymethyl Cellulose Powder
This work investigates the influence of moisture content and substrate material on the wall friction of carboxymethyl cellulose powder, which is used as an excipient in tablet formulations.
DetailsTime Dependent Stability of Aqueous Based Anode Slurries with Bio-Derived Binder by Rheological Methods
This application note will investigate the slurry aging and stability through its flow behavior and viscoelastic properties by using rheological methods. The slurry studied demonstrates a decrease in stability over time, which can be used to indicate the appropriate batch lifetime in a production environment.
DetailsDetermining the Linear Viscoelastic Region in Oscillatory Measurements
This note will describe the linear viscoelastic region (LVR) and how to determine the LVR in oscillatory experiments for the purpose of obtaining quality data. All aspects of the LVR discussed in this note are general to viscoelastic samples, including (but in no way limited to) polymers, foods, gels, creams, pastes, slurries, emulsions, and inks.
DetailsDetermine Viscoelasticity and Spreadability of Cream Cheese
The viscoelasticity and spreadability properties of cream cheeses can be quantitatively evaluated using TA Instruments Discovery Hybrid Rheometer.
DetailsSimple Determination of the Linear Viscoelastic Region of a Polymer Using a Rheometer
Materials such as polymers exhibit viscoelastic behavior which is directly related to molecular structure and formulation differences. To accurately evaluate the relationships between molecular structure and viscoelastic behavior requires that experiments, such as rheological measurements, be conducted in regions where the viscoelastic properties observed are independent of imposed stress or strain levels. That is, experiments must be conducted in the linear viscoelastic region.
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