Standard Test Method for Determining Molecular Weight Distribution and Molecular Weight Averages of Polyolefins by High Temperature Gel Permeation Chromatography

Importancia y uso:

5.1 This test method measures the molecular weight distribution and molecular weight averages of polyethylene (except LDPE and UHMWPE) and polypropylene resins. Differences in molecular weight and molecular weight distribution significantly affect physical properties, such as morphology, strength, melt flow etc., and as a result, the final properties of products made from these resins.

Subcomité:

D20.70

Referida por:

F2150-19

Volúmen:

08.03

Número ICS:

83.080.20 (Thermoplastic materials)

Palabras clave:

gel permeation chromatography; molecular weight average; molecular weight distribution; polyolefin; size exclusion chromatography;