Polymer thermal analysis. (Instruments).The PY2020 thermal analysis system is available for the QP Series GC/MS GC/MS Gas Chromatograph/Mass Spectrometer GC/MS Gas Chromatograph/Mass Spectrometry GC/MS Gas Chromatograph/Mass Spectrograph instruments. The PY2020 system enables selective GC/MS analysis of polymers by pyrolysis py·rol·y·sis n. Decomposition or transformation of a chemical compound caused by heat. pyrolysis (pīrol´isis), n , thermal desorption/pyrolysis and evolved gas analysis Evolved gas analysis (EGA) is a method used to study the gas evolved from a heated sample that undergoes decomposition or desorption. It is possible to detect which gas is evolved using evolved gas detection (EGD). (EGA (Enhanced Graphics Adapter) An early IBM video display standard that provided medium-resolution text and graphics. It required a digital RGB Enhanced Color Display or equivalent monitor and was superseded by VGA. EGA - Enhanced Graphics Adapter ). Pyrolysis can be used for macromolecular mac·ro·mol·e·cule n. A very large molecule, such as a polymer or protein, consisting of many smaller structural units linked together. Also called supermolecule. and other nonvolatile components. For pyrolysis applications, the sample cup free-tails into the furnace where the sample is instantly pyrolyzed with excellent reproducibility, according to the company. The GC separates the fragments and the MS identifies them. Thermal desorption/pyrolysis allows analysis of volatile compounds such as residual solvents, monomers, and antioxidants and stabilizers. For thermal desorption analysis, a plunger lowers the sample into a micro furnace at 40[degrees]C, and the temperature is programmed up. Once thermal desorption analysis is complete, the sample is taken out of the furnace, the temperature is raised to 600[degrees]C, and the sample cup is then dropped into the furnace for pyrolysis. Sample cups can move in or out of the furnace for both thermal desorption and pyrolysis. (Shimadzu Scientific Instruments) Circle 103 on card |
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