Hivatkozási szám

MSZ EN ISO 13885-3:2022

Dokumentumazonosító

178087

Cím

Gélpermeációs kromatográfia (GPC). 3. rész: Víz mint eluens (ISO 13885-3:2020)

Angol cím

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

Alkalmazási terület

This document specifies the determination of the molar-mass distribution and the average molar mass values Mˇn^ (number average) and Mˇw^ (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 Mˇw^ values greater than 10^6ˇ 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 Mˇn^ or light scattering for Mˇw^) can be used.

ICS

87.060.20 Kötőanyagok

Műszaki Bizottság

A szabvány nyelve

angol

Az érvényesség kezdete

2022-02-01

Forrás

idt EN ISO 13885-3:2021; idt ISO 13885-3:2020

Előd

Utód

Módosítás

SZK-közlemények

Kapcsolódó európai jogszabály

A szabvány

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