GPC
Laboratory > Chemicals
GPC Gel permeation chromatography | |
Gel permeation chromatography (GPC) is an analytical technique that separates dissolved macromolecules by size based on their elution from columns filled with a porous gel. The exclusion chromatography or gel filtration is a kind of solid-liquid chromatography that allows the separation of molecules according to their size. The molecular weight of the polymers is determined by GPC. GPC (gel permeation chromatography) is a chromatography method that measures molecular weight and molecular weight distribution (Mz, Mw and Mn) by comparing a sample polymer to known polystyrene standards. The procedure used is similar to the ASTM D5296-05 standard. Mz (average molecular weight Z) is the value that indicates the high molecular weight tail of the polymer. Mw (weight average molecular weight) indicates the average molecular weight of the polymer. Mn (number average molecular weight) indicates the low molecular weight of the polymer. Technicians working with polymers can control the strength, strength and performance of the polymer. |