Alfa Chemistry provides you with thermogravimetric analysis (TG or TGA) services to study the thermal stability and composition of flame retardant materials, including samples you send for testing or those developed in collaboration with us.
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What Can We Do?
Relying on experienced materials chemists and advanced laboratory equipment, Alfa Chemistry provides you with thermogravimetric analysis services for customers with the following research or development needs.
- Changes in the crystalline properties of materials, such as physical phenomena of matter including melting, evaporation, sublimation, and adsorption.
- Thermal stability, decomposition process, dehydration, dissociation, oxidation, reduction and other processes of materials.
- Quantitative analysis of material composition or specific components.
- Effects of additives and fillers, moisture and volatiles, reaction kinetics and other chemical phenomena.
- Research and development, process optimization and quality control of flame retardant materials.
During the service project, if you have any questions about the analysis report or service, our flame retardant experts will answer you in time.
Analytical Method
Thermogravimetric analysis can generally be divided into two categories, namely dynamic and static methods. Alfa Chemistry will recommend suitable test methods for you based on product and customer needs.
Static Method
Schematic diagram of TGA [2]
Static methods include isobaric mass change measurement and isothermal mass change measurement. Isobaric mass change determination refers to a method of measuring the relationship between the equilibrium mass and temperature of a substance under a constant volatile partial pressure at a programmed temperature. Isothermal mass change measurement refers to a method of measuring the relationship between the mass and temperature of a substance under constant temperature conditions. This method is highly accurate but time-consuming.
Dynamic Method
Dynamic methods are often referred to as thermogravimetric analysis and derivative thermogravimetric analysis (DTG). DTG is the first derivative of the TG curve to temperature (or time). The TG curve is obtained by plotting the mass change rate of the substance (dm/dt) against temperature (T) or time (t).
Why Choose Alfa Chemistry?
Experienced team of materials chemists
Leading flame retardant technology
Reliable quality and standards
Fast turnaround times and great prices
Comprehensive and systematic testing and analysis services
Research Information
F. Laoutid et al. developed a novel bio-based nitrogen-rich and phosphorus-rich flame retardant (Phyt/PEI-TA) and investigated the thermal degradation of polylactic acid (PLA) containing Phyt/PEI-TA by TG analysis. The results showed that the introduction of flame retardants significantly improved the thermal stability of PLA, indicating that the amount of char formation was significantly increased. Meanwhile, the use of Phyt/PEI-TA did not reduce the onset degradation temperature of PLA. [1]
TG curves of PLA and PLA containing Phyt/PEI-TA under nitrogen and air atmospheres [1]
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References
- F. Laoutid, et al. (2018). "A new direction in design of bio-based flame retardants for poly(lactic acid)," FAM 42(8), 914-924.
- Kessinee Unapumnuk, et al. (2006). "Pyrolysis Behavior of Tire-Derived Fuels at Different Temperatures and Heating Rates," Journal of the Air & Waste Management Association 56(5), 618-627.
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