19/30397405 DC - BS ISO 13885-2. Gel permeation chromatography (GPC). Part 2. N,N-Dimenthylacetamide (DMAC) as eluent

19/30397405 DC

BS ISO 13885-2. Gel permeation chromatography (GPC). Part 2. N,N-Dimenthylacetamide (DMAC) as eluent

Status : Current, Draft for public comment   Published : August 2019

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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)1

1

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 method is not an absolute one and requires calibration with commercially available unbranched polymethyl methacrylate standards that have been characterized by independent absolute methods. The results for samples of polymers with different chemical structures are therefore only comparable within groups of samples of the same type.

The conditions specified in this document are not suitable for 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).

No correction methods (e.g. for the elimination of peak broadening) are included in this document. If absolute molar mass values are required, an absolute method (e.g. membrane osmometry for Mn or light scattering for Mw) shall be used.




Standard Number19/30397405 DC
TitleBS ISO 13885-2. Gel permeation chromatography (GPC). Part 2. N,N-Dimenthylacetamide (DMAC) as eluent
StatusCurrent, Draft for public comment
Publication Date28 August 2019
Normative References(Required to achieve compliance to this standard)ISO 13885-1, ISO 1513, ISO 5725-1, ISO 4618, ISO 15528
Informative References(Provided for Information)ISO 16014-5, ISO 16014-1, ISO 16014-2, ISO 16014-4, ISO 16014-3
International RelationshipsISO/DIS 13885-2
Draft Expiry Date21 October 2019
DescriptorsMolar mass, Precision, Data, Calibration, Chromatography
ICS87.060.20
Title in FrenchChromatographie par perméation de gel (GPC) — Partie 2: Eluant au N,N-Diméthylacetamide (DMAC) Partie 2: Eluant au N,N-Diméthylacetamide (DMAC)
CommitteeSTI/10
PublisherBSI
FormatA4
DeliveryYes
Pages32
File Size799 KB
NotesWarning: this draft is not current beyond its expiry date for comments.
Price£20.00


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