title: Development of supercritical fluid extraction coupled to comprehensive two-dimensional supercritical fluid chromatography (SFE-SFCxSFC).
abstract: Supercritical fluid extraction was coupled to comprehensive two-dimensional supercritical fluid chromatography with conventional packed columns. With this system, three modes of operations were feasible, such as SFE-SFC, SFCxSFC, and SFE-SFCxSFC. The operations for valve switching and data acquisition were automated using in-house software. In order to evaluate the present system, SFE-SFC for polymer additives in polypropylene, SFCxSFC for a mixture of benzene derivatives with different polarities, and SFE-SFCxSFC for styrene oligomers in polystyrene were performed. With SFE-SFCxSFC, diastereomers were resolved for linear tetramers and pentamers as well as trimers with the tetraline moiety.
authors.affiliation: School of Materials Science, Toyohashi University of Technology, Toyohashi.
authors.forename: Daichi
authors.initials: D
authors.lastname: Okamoto
authors.forename: Yukio
authors.initials: Y
authors.lastname: Hirata