Plastics — Determination of average molecular weight and molecular weight distribution of polymers using size-exclusion chromatography — Part 2: Universal calibration method

Informace o normě:

Označení normy: ISO 16014-2:2019-ed.3.0
Datum vydání normy: 15.5.2019
Počet stran: 10
Přibližná hmotnost: 30 g (0.07 liber)
Země: Mezinárodní technická norma
Kategorie: Technické normy ISO

Anotace textu normy ISO 16014-2:2019-ed.3.0 :

Description / Abstract: This document specifies a method for determining the average molecular weight and the molecular weight distribution of polymers using size-exclusion chromatography (SEC). The average molecular weight and the molecular weight distribution are calculated using a universal calibration curve instead of the conventional calibration curve. NOTE This test method is classified as a relative method as described in ISO 16014-1, but the average molecular weights and molecular weight distributions calculated by the method are equal to, or nearly equal to, the absolute values. For details, see the Annex A.