METHOD FOR FRACTIONATING A PVC PLASTIC BY CENTRIFUGAL PARTITION CHROMATOGRAPHY

Abstract

The present invention relates to the use of a centrifugal partition chromatography (CPC) device for the separation of one or more PVC polymers and at least one additive and any impurities from a PVC-based sample, in particular implementing a solvent system specific to said CPC fractionation. The two-phase solvent system is implemented in at least one column comprising a series interconnection of at least one set of partition cells in which a stationary phase comprising phase A is maintained by centrifugal force and a mobile phase comprising phase B circulates by percolation through said stationary phase, to form a solution of purified PVC polymer(s) comprising phase A and to form at least one liquid fraction comprising phase B and said additive.