標準號：DIN 55672-1-2007
中文標準名稱：凝膠滲透色譜法(GPC).第1部分:用四氫呋喃(THF)作洗脫溶劑
英文標準名稱：Gel permeation chromatography (GPC) - Part 1: Tetrahydrofuran (THF) as elution solvent
標準類型：G04
發(fā)布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：G04
國際標準分類號：71.040.50
引用標準：DIN 50014;DIN EN ISO 1513;DIN EN ISO 15528;DIN ISO 5725-1
適用范圍：This standard describes the determination of the molecular weight distribution, number-average molecularweight Mn and weight-average molecular weight ,Mw of polymers that are soluble in THF (tetrahydrofuran) bygel permeation chromatography (GPC).It is possible that, in spite of the good repeatability of the chromatograms obtained, this method cannot beused with certain polymer types because of specific interactions (e.g. adsorption) within thesample/eluent/column system.The method is not an absolute one and requires calibration with commercially available unbranchedpolystyrene standards that have been characterized by independent absolute methods. The results for samples of polymers other than polystyrene are therefore only comparable within groups of samples of thesame type.The conditions specified in this standard are not suitable for the GPC analysis of polymer samples with Mwvalues greater than 10~6 g/mol (see Annex C).No correction methods (e.g. for the elimination of peak broadening) are included in this standard. If absolutemolecular weight values are required, an absolute method (e.g. membrane osmometry for Mn or lightscattering for Mw) shall be used.