High osmotic pressure chromatography

摘要: New separation methods termed Enhanced Partitioning Fractionation (EPF) and High Osmotic Pressure Chromatography (HOPC) are described. The HOPC method involves passing large amounts of concentrated polymer solutions over porous material in a packed column. concentration is high enough to allow for chain overlap generate osmotic pressures with respect the material. resulting pressure causes increased sample based on molecular size. higher weight components initial fractions eluent collected, whereas lower later fractions. each fraction decreases successive eluent. applicable wide variety polymers provides significant performance advantages conventional preparative scale GPC. EPF not chromatographic procedure, but allows fractionation that contact