Small amounts of PE-LD are often added to PE-HD to modify ist mechanical properties. This article illustrates how the DSC can be used to determine the detection limit for such additions.

Measurements of Low Concentrations of PE-LD in PE-HD

Small amounts of PE-LD are often added to PE-HD to modify ist mechanical properties. This article illustrates how the DSC can be used to determine the detection limit for such additions. Four samples of different (known) PE-LD content were measured. The results show that conentrations of consituents in the percent range can be detected in polymer mixtures and in certain circustances even quantified. For the PE-LD/PE-HD system investigated, the detection limit was found to be between 0.5% and 1%.

 

 

 

 

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 PE-LD/PE-HD blend
 

Measurement of low concentrations of PE-LD in PE-HD | Thermal Analysis Application No. UC 126 | Application published in METTLER TOLEDO Thermal Analysis UserCom 12