shown in Fig. 28. The analysis of a complex multireactor LLDPE resin is completed
in less than 30 min with reasonable resolution and good reproducibility, as shown
by the repeated analysis (ten times) of the same sample.
Fig. 27 CEF/TREF apparatus with autosampler
Fig. 28 Multiple CEF analysis (Â10) of an Elite resin obtained at crystallization rate of 5
C/min
and heating rate of 10
C/min; injection volume, 20 μL of 0.5%w/v; elution flow, 0.5 mL/min;
analysis time per sample, 25 min
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in less than 30 min with reasonable resolution and good reproducibility, as shown
by the repeated analysis (ten times) of the same sample.
Fig. 27 CEF/TREF apparatus with autosampler
Fig. 28 Multiple CEF analysis (Â10) of an Elite resin obtained at crystallization rate of 5
C/min
and heating rate of 10
C/min; injection volume, 20 μL of 0.5%w/v; elution flow, 0.5 mL/min;
analysis time per sample, 25 min
Polyolefin Characterization: Recent Advances in Separation Techniques
235