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ILNAS-EN ISO 13885-2:2021 Edition 09/2021
Gel permeation chromatography (GPC) - Part 2: N,N-Dimenthylacetamide (DMAC) as eluent (ISO 13885-2:2020)
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Abstract

This document 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 DMAC (N,N-Dimethylacetamide) by gel permeation chromatography (GPC). NOTE Also known as size exclusion chromatography (SEC). 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 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.

Status

Standard - Active

Origin

Technical Committee :
CEN/TC 139 : Paints and varnishes

Implementation

start of the vote on the project    29/04/2021   date of ratification (dor)    23/08/2021
end of the vote on the project    22/07/2021   date of anouncement (doa)    31/12/2021
start of the vote on the final project    30/01/2023   date of publication (dop)    31/03/2022
end of the vote on the final project    27/03/2023   date of withdrawal (dow)    31/03/2022


Publication Official Journal
of the Grand-Duchy of Luxembourg
18/03/2022
Reference Mémorial A N° 126

International Classification for Standards (ICS codes) :

87.060.20 : Binders

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