Standard Svensk standard · SS-EN ISO 13885-3:2021

Gelpermeationskromatografi (GPC) - Del 3: Vatten som elueringsmedel (ISO 13885-3:2020)

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Standard Svensk standard · SS-EN ISO 13885-3:2021

Gelpermeationskromatografi (GPC) - Del 3: Vatten som elueringsmedel (ISO 13885-3:2020)
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Omfattning
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 water by gel permeation chromatography (GPC).
NOTE Also known as size exclusion chromatography (SEC).
This method is applicable to neutral polymers and polyanions (e.g. polycarboxylates, polysaccharides, fully hydrolyzed polyvinyl alcohols and high-molecular polyethylene oxides). It is not applicable to polycations [e.g. polyvinylpyrrolidone, polyvinylpyridine, salts of poly(diallyl N,N dimethyl azacyclopentane), chitosan].
Despite good solubility in the mobile phase and 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 (see also Clause 12).
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 methods (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.

Ämnesområden

Bindemedel (87.060.20)


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Standard Svensk standard · SS-EN ISO 13885-3:2021

Gelpermeationskromatografi (GPC) - Del 3: Vatten som elueringsmedel (ISO 13885-3:2020)
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Pris: 1 045 SEK
standard ikon pdf

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standard ikon

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Produktinformation

Språk: Engelska

Framtagen av: Färg och lack, SIS/TK 433

Internationell titel: Gel permeation chromatography (GPC) - Part 3: Water as eluent (ISO 13885-3:2020)

Artikelnummer: STD-80031083

Utgåva: 1

Fastställd: 2021-09-06

Antal sidor: 36