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.
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.
In this note, TGA will be performed on natural and synthetic graphite of various particle sizes. The analysis will provide information that would find value in quality control settings, such as batch consistency and impurities.
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.
Here, a standard operating procedure (SOP) for determining the quality of collagen hydrogel was developed using oscillatory rheology with a DHR-2 rheometer.
Wall slip is a common problem when testing highly concentrated emulsions or suspensions on a rheometer. It is usually caused by large velocity gradients in a thin region adjacent to the wall. When slip occurs, the measured viscosity can be significantly lower than the actual viscosity of the sample. To overcome this influence, we have introduced a series of roughened surface geometries, such as crosshatched or serrated plates, which significantly improve the contact between the geometry and the sample to reduce slip.
In this application note, we used the Nano DSC to monitor ST-DNA melting at a range of concentrations in phosphate buffer.
This study investigates the influence of operating temperature on the flexural properties and fatigue life of two grades of Garolite woven fiberglass composites using an Electroforce 3330 load frame.
In this note, viscoelastic properties of SBR mixed with linear and branched butadiene, and carbon and silica filler are systematically investigated using dynamic mechanical analysis.
Polymer melt rheology aims to understand and quantify the viscous and elastic properties of a polymer so that the process parameters are aligned with the material’s melt properties and vice-versa.
This paper utilizes a single run DSC experiment and analysis of the crystallization data using the Avrami equation to obtain a cursory but useful comparison of crystallization characteristics of different colored polypropylene marker caps purchased from an office supply store.
Differential scanning calorimetry (DSC) is an effective technique for rapidly evaluating the oxidative stability of polymers and enables fiber producers to determine optimum formulations.