Rubber, raw natural — Determination of average molecular mass and molecular-mass distribution by size exclusion chromatography (SEC)
NORMA vydaná dňa 7.10.2004
Označenie normy: ISO 16564:2004
Dátum vydania normy: 7.10.2004
Počet strán: 7
Približná hmotnosť: 21 g (0.05 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO
Description / Abstract: ISO 16564:2004 specifies a method of determining the average molecular mass and the molecular-mass distribution of raw natural rubber dissolved in tetrahydrofuran. A set of polystyrene standards is used for calibration purposes (i.e. the method is a relative one). An alternative method, using cyclohexane as solvent and polyisoprene standards, is included in an informative annex.