Separation of Branched Poly(bisphenol A carbonate) Structures by Solvent Gradient at Near-Critical Conditions and Two-Dimensional Liquid Chromatography.

Branching is a molecular metric that strongly influences the application properties of polymers. Consequently, detailed information on the microstructure is required to gain a deeper understanding of structure-property relationships. In the present case, we employ high-performance liquid chromatography to characterize the branching in a poly(bisphenol A carbonate) (PC).

Selective chromatographic separation of polycarbonate according to hydroxyl end-groups using a porous graphitic carbon column.

Porous graphitic carbon (PGC) has shown unique separation efficiency in liquid chromatography for a wide range of substance classes. In the characterization of polymers PGC has particularly been used for analysis of polyolefins. Its retention mechanisms differ dramatically from those of silica-based stationary phases and therefore allow interesting applications.