Norm

NEN-ISO 13885-1:2020 en

Bindmiddelen voor verven en vernissen - Gelpermeatiechromatografie (GPC) - Deel 1: Tetrahydrofuraan als oplosmiddel

118,48 129,14 Incl BTW

Over deze norm

Status Definitief
Aantal pagina's 23
Gepubliceerd op 01-07-2020
Taal Engels
NEN-ISO 13885-1 specifies the determination of the molar-mass distribution and the average molar mass values Mn (number average) and Mw (weight average) of polymers that are soluble in tetrahydrofuran (THF) by gel permeation chromatography (GPC).Even though the chromatograms obtained show good repeatability, it is possible that this method cannot be used with certain polymer types because of specific interactions (e.g. adsorption) within the sample/eluent/column system.The conditions specified in this document are not applicable to the GPC analysis of polymer samples with Mw values greater than 106 g/mol and/or of polymers with elution limits outside the calibration range (see 7.6 and Annex C).This document includes no correction method (e.g. for the elimination of peak broadening. If absolute molar-mass values are required, an absolute method (e.g. membrane osmometry for Mn or light scattering for Mw) can be used.

Details

ICS-code 87.060.20
Nederlandse titel Bindmiddelen voor verven en vernissen - Gelpermeatiechromatografie (GPC) - Deel 1: Tetrahydrofuraan als oplosmiddel
Engelse titel Gel permeation chromatography (GPC) - Part 1: Tetrahydrofuran (THF) as eluent
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