Norm

NEN-ISO 19929:2017 en

Kunststoffen - Bepaling van de gemiddelde moleculaire massa en de mengverhouding tussen polyethyleenglycol en de derivaten hiervan door MALDI-TOF-MS.

79,70

Over deze norm

Status Definitief
Aantal pagina's 13
Commissie Kunststoffen
Gepubliceerd op 01-03-2017
Taal Engels
NEN-ISO 19929 specifies a general method for determining the average molecular mass and mixture ratio of poly(ethylene glycol) (PEG) and its derivatives with different end groups by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS). It is applicable to PEG and its derivatives with molecular masses from 500 g mol-1 to 20 000 g mol-1. The composition is calculated by means of a calibration curve constructed using standard polymer mixtures, where the peak area ratio is plotted versus the mass ratio. This document can be applied to other polymers with monomeric unit similar to PEG.

Details

ICS-code 83.080.01
Nederlandse titel Kunststoffen - Bepaling van de gemiddelde moleculaire massa en de mengverhouding tussen polyethyleenglycol en de derivaten hiervan door MALDI-TOF-MS.
Engelse titel Plastics - Determination of average molecular mass and mixture ratio of poly(ethylene glycol) and its derivatives by MALDI-TOF-MS

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