CFC0 pages

CFC
CROSS FRACTIONATION CHROMATOGRAPHY

Automated high resolution Cross-Fractionation
Chromatograph for Polyolefin characterization.
High resolution cross-fractionation of polyolefins is now
possible with Polymer Char’s fully automated CFC instrument.
Two-dimensional distribution relating molar mass and chemical
composition is often required for comprehensive characterization
of complex materials. A complete cross-fractionation is the only
technique that determines this with no loss of information.
This compact, automated instrument fractionates the polymer
according to composition, through a TREF (Temperature Rising
Elution Fractionation) process, while the resulting fractions are
continuously injected to online GPC columns where a second
fractionation is performed; this time according to molar mass.
Optionally, the TREF column can be replaced by a TGIC*
column in order to separate by adsorption and reach the
composition range of elastomer resins.
Polymer Char’s analytical CFC technology overcomes the
difficulties of preparative fractionation methods, which are
tedious and time consuming. The full bivariate distribution is
now measured in hours instead of days, with limited
consumption of solvent, no manual intervention, and in an
intrinsically safe setup.

KEY FEATURES
Analytical scale, fully-automated instrument for cross-fractionation of
polyolefins.
An integrated IR5 MCT detector provides excellent sensitivity in
concentration and composition signals.
A new autosampler with 42 vials for extended analysis throughput is
incorporated.
The first separation step on the basis of composition can be performed by
TREF for crystallizable polyolefin materials or by TGIC* for elastomer resins.
Comprehensive information on molar mass and chemical composition
distributions in a single analysis is obtained.
Flexible definition of number of fractions and temperatures.
Under standard conditions, two samples per day can be analyzed.
Sub-ambient TREF operation (down to -20ºC) for low crystallinity samples.

Virtual instrumentation software allows flexible method
development so that the analysis time and resolution can be
optimized. A powerful and intuitive software package is
available for data processing, calibration of columns and
graphical representation of distributions, allowing for different
views of the data.
*Temperature Gradient Interaction Chromatography analysis of Polyolefins on a graphitized
carbon column is a patented technology by DOW Chemical.

Find out more at www.polymerchar.com/CFC
Log M

temperature

3D Contour plot of the CCD x MMD bivariate distribution.

Polymer Characterization, S.A.

Gustave Eiffel, 8 Paterna
E-46980 Valencia, Spain

T.: +34 96 131 81 20
F.: +34 96 131 81 22

info@polymerchar.com
www.polymerchar.com