ethylene-rich EPCs to linear or slightly branched crystalline PE homopolymers as
the TREF fractionation temperature increases.
Finally, a complete separation according to CCD and MMD for the TREF
fractions was achieved by HT-2D-LC analysis, where the HT-HPLC separation is
hyphenated to HT-SEC. The 2D contour plots for the 30
C and all mid-elutiontemperature TREF fractions of the two IPC samples are given in Fig. 3.54. Separation of low molar mass iPP and high molar mass EPR is seen for the 30
C fraction
Fig. 3.54 HT 2D-LC contour plots for the fractions 30
C, 60
C, 80
C and 90
C of 3V (a, c, e,
g) and 3VA (b, d, f, h) (reprinted from [111] with permission of Elsevier)
3.4 Two-Dimensional Liquid Chromatography
141
the TREF fractionation temperature increases.
Finally, a complete separation according to CCD and MMD for the TREF
fractions was achieved by HT-2D-LC analysis, where the HT-HPLC separation is
hyphenated to HT-SEC. The 2D contour plots for the 30
C and all mid-elutiontemperature TREF fractions of the two IPC samples are given in Fig. 3.54. Separation of low molar mass iPP and high molar mass EPR is seen for the 30
C fraction
Fig. 3.54 HT 2D-LC contour plots for the fractions 30
C, 60
C, 80
C and 90
C of 3V (a, c, e,
g) and 3VA (b, d, f, h) (reprinted from [111] with permission of Elsevier)
3.4 Two-Dimensional Liquid Chromatography
141