Overview Thermogravimetry (TGA) is a classical method determining temperature dependent material properties. Traditional TGA is performed at ambient pressure and with relatively inert reaction gases. To measure application-relevant material properties, however, TGA must be performed under real application conditions: at high pressures, with reactive and/or corrosive gases and in steam atmospheres. The TGA and…
DetailsOverview Thermosetting materials, such as epoxy, have been widely applied in many areas including automotive, aerospace and electronics industries in the form of surface coating, structural adhesives, advanced composites and packaging materials. These kind of materials pose high mechanical strength, high temperature stability and good solvent resistance. Unlike thermoplastic polymers, the process of thermosets…
DetailsOverview An overview of the use of thermal analysis techniques in materials characterization is explored with reference to typical examples of the type, quality, and usefulness of data that can be gathered and the interpretation of results.
DetailsOverview The ability of a material to store and transfer heat is characterized with the material properties of thermal diffusivity, thermal conductivity, and specific heat capacity. Understanding these properties is critical when exposing a material to a wide array of temperature environments: large gradients, rapid changes, and maintaining stability, to name a few. Accurate…
DetailsOverview In this presentation we will demonstrate accurate and high-throughput methods to measure the critical heat transfer properties of thermal diffusivity and thermal conductivity. Direct and indirect methods provide suitable measurements for a wide variety of materials – including polymers, ceramics, carbons, graphite, composites, glasses, metals, and alloys – and at temperatures from -150°C…
DetailsOverview Specific heat capacity measures the ability of a material to absorb thermal energy. Specific heat capacity is an important property in many fields; it involves thermal energy exchange. People have been studying specific heat capacity for decades on a wide variety of materials such as phase change materials, carbon nanomaterials, heating and cooling…
DetailsPractical Aspects of Kinetics Determination by Thermal Analysis This presentation describes how DSC and TGA are used to obtain kinetic parameters and the relative merits of each approach. Guidelines will be given for the selection of the best approach and insight will be shared regarding the common uses of kinetic parameters specifically for hazard evaluation…
DetailsOverview Polymeric materials, both thermoplastics and thermosets, have long been studied by differential scanning calorimetry (DSC). Cure properties, crystallization behavior, and glass transition temperatures are just a few of the material characteristics investigated by this versatile thermal technique. In many instances, the comparison of these material properties from samples that have a different production…
DetailsOverview Differential Scanning Calorimetry is a simple yet powerful technique for gaining a broad understanding of the characteristics of pharmaceutical materials. Many of the properties that are explored using DSC, including apparent melting, the glass transition, and purity, are critical towards understanding the impact of processing conditions as well as the stability and compatibility…
DetailsMorphology Of Complex Nanoparticle Mixtures The performance of new materials and devices depend heavily on morphological considerations: degree of crystallinity, conformation of amorphous species, and relative organization of one species with respect to another, characteristics which can be determined by thermal analysis. These considerations are important for functional materials such as photovoltaics and MEMS devices,…
DetailsOverview The impact of humidity on a material’s properties and performance during processing, storage, and in final form is a growing area of interest for manufacturers across many industries. A few areas of investigation of this impact include material selection and failure analysis of layered materials used with electronic circuit boards, morphological changes in…
DetailsKadine Mohomed – Characterization of Amorphous Pharmaceuticals by DSC Analysis The glass transition temperature of an amorphous pharmaceutical solid is a critical physical property that can greatly influence the material’s chemical stability, physical stability, and viscoelastic properties. Thankfully with specific analytical tests made possible through the use of Differential Scanning Calorimetry, this and other thermal…
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