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.
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.
During the service project, if you have any questions about the analysis report or service, our flame retardant experts will answer you in time.
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.
Schematic diagram of TGA 
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 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).
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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. 
TG curves of PLA and PLA containing Phyt/PEI-TA under nitrogen and air atmospheres 
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