ASTM E1131 Standard Test Method for Compositional Analysis by Thermogravimetry
ASTM E1131 describes how Thermo Gravimetric Analysis (TGA) is used to determine endotherms, exotherms, weight loss on heating and cooling, and other properties of materials. Polymers, plastics, composites, laminates, adhesives, food, coatings, pharmaceuticals, organic materials, rubber, petroleum, chemicals, explosives, and biological samples are among the materials that TGA analyzes. TGA also analyzes a wide range of other materials, including metals, ceramics, and glass.
Scope:
The scope of the test procedure of ASTM E1131is that it may be used on both solids and liquids. Typically, the temperature range of the test is from ambient temperature to 1000oC. It is possible to identify the composition of individual components in the range of 1 to 100 weight percent.
Procedure:
This ASTM E11131 test method offers a generic procedure using thermogravimetry to assess the quantity of highly volatile matter, medium volatile matter, flammable material, and ash content of a variety of different compounds. This test technique will be beneficial in the performance of a compositional analysis in circumstances when all parties involved have agreed on the procedure.
In this test method of ASTM E1131, thermogravimetry is used to measure the mass of a material that has been heated at a regulated pace in a suitable environment. The mass of the substance is measured as a function of time or temperature in this approach. The mass loss of a material across specified temperature ranges and in a given environment may be used to determine the composition of that substance.
This test technique makes use of a gas environment that is both inert and reactive. The values expressed in metric units (SI units) are to be taken as standard. In this standard, there are no other units of measurement beyond the metric system. This standard is closely linked to ISO 11358, however, it is more precise and exact in its requirements.
Result:
The test method of ASTM E1131is intended for use in quality control, material screening, and associated problem solving applications where a compositional analysis is requested or when a comparison with another known material of the same kind may be done. The criteria that have been provided should be regarded as recommendations. They may be modified to meet the needs of a specific analysis, provided that the modifications are mentioned in the report.
Conclusion:
This test method of ASTM E1131describes that Thermo Gravimetric Analysis (TGA) is used to determine endotherms, exotherms, weight loss on heating and cooling, and other properties of materials.
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