International Standard
ISO 19929:2017
Plastics — Determination of average molecular mass and mixture ratio of poly(ethylene glycol) and its derivatives by MALDI-TOF-MS
Reference number
ISO 19929:2017
ISO 19929:2017
Edición 1
2017-03
2017-03
© ISO 2024
International Standard
p
ISO 19929:2017
66563
No disponible en español
Publicado
(Edición 1, 2017)
Esta norma se revisó y confirmó por última vez en 2022.
Por lo tanto, esta versión es la actual.
Resumen
ISO 19929:2017 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.
Informaciones generales
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Estado: PublicadoFecha de publicación: 2017-03Etapa: Norma Internacional confirmada [90.93]
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Edición: 1Número de páginas: 13
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Comité Técnico :ISO/TC 61/SC 5ICS :83.080.01
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