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)
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Number of Standard:
CSN EN ISO 10927
Category:
640250
Pages:
28
Released:
01.01.2019
Catalog number:
505954
DESCRIPTION
CSN EN ISO 10927
CSN EN ISO 10927 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. Original English text of CSN EN Standard. The price of the Standard included all amendments and correcturs.