PREP mc20 pages
Full characterization of Polymers by Preparative
Fractionation.
PREP mc2 is a preparative instrument intended for fractionating
polymers by molar mass or by composition (TREF or CRYSTAF).
Samples are put into the vessels and the fractionation is
performed automatically according to the selected method
conditions in less than 24 hours.
Molar Mass fractionation is based on the solvent interaction
with the polymer chains through a solvent/non-solvent
combination. Polydispersity of resulting fractions can be very
narrow.
Composition fractionation is based on differences in
crystallizability of the copolymer resins and can be performed
by dissolution (TREF) or by precipitation (CRYSTAF) approaches.
A single solvent is used to separate fractions according to their
composition by dissolution at different temperatures.
This instrument facilitates the cross-fractionation studies, which
have been shown as a needed tool to fully characterize resins.
KEY POINTS
► Fully-automated fractionation process:
► Two samples can be fractionated simultaneously and up to 8 fractions
can be obtained from each one.
► Up to 16 fractions can be obtained when fractionating one single
sample.
► No hot solvents handling.
► Improved capability of fractionation: up to 4 grams of sample with
new stirring system.
► Possibility of subambient operation (down to -20°C) for low crystallinity
samples.
► Flexible hardware and software to carry out different fractionation methods.
Find out more at www.polymerchar.com/PREP_mc2
20 30 40 BO 60 70 80 90 100 1 10 7 6 5 4 3 2
Temperature (°C) Log Mw
— F2 - F4 — F6 F8 — F1 — F3 — F5 — F7 — F9
— F3 — F5 — F7 — Parent sample — F2 F4 F6 — F8 — Parent sample
Composition Fractionation with 8 fractions. Molar Mass Fractionation with 9 fractions.
Polymer Characterization, S.A. Gustave Eiffel, 8 Paterna T:+34 96 131 81 20 info@polymerchar.com
E-46980Valencia, Spain F: +34 96 131 81 22 www.polymerchar.com
Polymer Char
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