Fully Automated Column-based Preparative Fractionation Equipment for Polymers.

PREP C20 is a fully-automated column-based fractionation equipment capable of fractionating up to 20 grams of polymer, according to its chemical composition.

By adding a column as a support for the solution to crystallize in, the separation for each of the fractions is more appropriate, especially for recently developed products such as the multiple-reactor catalyst resins, in which a support for the solution to adhere to is critical.

PREP C20 works as a pilot plant in a completely automated manner. The main steps of fractionation are performed automatically: dissolution, loading of the column, crystallization, elution, and collection of the fractions, avoiding the need of handling hot and large amounts of solvent.

The software allows the analysts to create their own methods adjusted to their samples. Up to 9 fractions can be obtained automatically, and it is possible to check the fractionation process thanks to an interactive software. Once the fractionation is finished, the equipment is clean and ready to start a new fractionation right away. The obtained fractions can be further analyzed by other techniques and/or can be used for micromechanical testing as well.

Fractionation takes place in a Temperature Rising Elution Fractionation (TREF) mode, although other techniques of fractionation, such as Thermal Gradient Interaction Chromatography (TGIC), Molar Mass, and Solvent Gradient Interaction Chromatography (SGIC) might be possible as well.

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