Plastics - Determination of the molecular mass and molecular mass distribution of polymer species by matrixassisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS)
STANDARD published on 1.1.2019
Designation standards: ČSN EN ISO 10927
Classification mark: 640250
Catalog number: 505954
Publication date standards: 1.1.2019
The number of pages: 28
Approximate weight : 84 g (0.19 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
This document specifies a general method for determining the average molecular mass and molecular mass distribution of polymers (see Reference [1]) from 2 000 g . mol-1 to 20 000 g . mol-1 by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS).
The average molecular masses and molecular mass distributions are calculated from a calibration curve constructed using synthetic-polymer and/or biopolymer standards. This method is therefore classified as a relative method.
The method is not applicable to polyolefins or to polymers with a polydispersity >1,2