Measurement of low level of volatiles
Many polymer application are sensitive to occurrence of low level volatilization . on a large production basis,even a small level of volatiles can have a major impact on the processing of the polymer. It is known that low levels of volatiles can affect the injection molding or blow molding processing of polymers. Shown in figure7 is the low level of volatilization obtained for a single pellet of PET resin. This measurement was performed holding the sample under gentle isothermal conditions at 130 C. the mass loss observed at 10 hours was 0.219% for the PET pellet. This is an important aspect for PET resins used to make beverage containers as low levels of soluble volatile components can affect the taste of the beverage . the high performance TGA instruments from PerkinElmer provide the high degree of sensitivity and stability to make these long term measurements possible