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.
DetailsTo assess how alternative materials perform as compared to traditional plastic materials, dynamic mechanical analysis (DMA) may be used in addition to previously reported tensile, compressive, and hardness methods.
DetailsDSC step annealing is used to study the fine molecular structure of poly(vinylidene fluoride) (PVDF) homopolymers and copolymers. The melting pattern, obtained after step annealing, is a characteristic “fingerprint” for small variations in structure. This “fingerprint” detects variations in the polymerization process, the molecular weight of the polymer, the fraction and the nature of the co-monomer.
DetailsThis note demonstrates the utility of differential scanning calorimeter (DSC) measurements in evaluating the effects of an antagonistic interaction of two common additives that may be found in a mechanical recycle stream of polypropylene (PP).
DetailsThe interaction between the antigen binding site and an antigen is extremely specific, which has made antibodies very highly desirable reagents when developing a wide variety of antigen detection assays.
DetailsTo Characterize the Variation in Material Properties of Non-Woven PLGA Fibers
DetailsThis 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.
DetailsThe viscoelasticity and spreadability properties of cream cheeses can be quantitatively evaluated using TA Instruments Discovery Hybrid Rheometer.
DetailsOxidative degradation of polymers is an exothermic process (releases heat) and is detectable by differential scanning calorimetry (DSC). Furthermore, DSC evaluation of polyethylene at elevated temperatures in the presence of oxygen is an effective method for accelerating the onset of degradation so that longer term (shelf life) properties can be predicted and/or compared.
DetailsThe blending of two or more polymers is becoming a common method for developing new materials for demanding applications such as impact-resistant parts and packaging films.
DetailsThermogravimetric Analysis (TGA), which provides information about the thermal stability and decomposition rate of materials, is an excellent technique for rapidly comparing the behavior of materials tested with different flame retardants.
DetailsVarious thermal analysis techniques can be used to monitor the cure level in thermosets. Differential scanning calorimetry (DSC), for example, can determine cure level based on the amount of additional curing (with associated heat evolution) that occurs on further heating.
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