UNE EN ISO 10927:2019
Plastics - Determination of the molecular mass and molecular mass distribution of polymer species by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) (ISO 10927:2018)
Plásticos. Determinación de la masa molecular y de la distribución de la masa molecular de polímeros por espectrometría de masa de tiempo de vuelo utilizando la desorción/ionización láser asistida por matriz (MALDI-TOF-MS). (ISO 10927:2018).
| Standard number: | UNE EN ISO 10927:2019 |
| Pages: | 22 |
| Released: | 2019-06-05 |
| Status: | Standard |
| Pages (Spanish): | 23 |
UNE EN ISO 10927:2019
This International Standard specifies a general method for determining the average molecular mass and molecular mass distribution of polymers (see Reference[1]) from 2 000 g Å" mol"1 to 20 000 g Å" 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.