Pulps - Determination of limiting viscosity number in cupri-ethylenediamine (CED) solution

ISO 5351:2010 specifies a method which yields a number that is an estimate of the limiting viscosity number of pulp in a dilute cupri-ethylenediamine (CED) solution. ISO 5351:2010 is primarily applicable to CED-soluble samples of bleached chemical pulps but can also be applied to any kind of pulp that dissolves completely in CED solution.

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Main informations

Collections

National standards and national normative documents

Publication date

April 2010

Number of pages

26 p.

Reference

NF ISO 5351

ICS Codes

85.040 Pulps

Classification index

Q50-020

Print number

1 - 15/04/2010

International kinship

ISO 5351:2010

Sumary

Pulps - Determination of limiting viscosity number in cupri-ethylenediamine (CED) solution

ISO 5351:2010 specifies a method which yields a number that is an estimate of the limiting viscosity number of pulp in a dilute cupri-ethylenediamine (CED) solution.

ISO 5351:2010 is primarily applicable to CED-soluble samples of bleached chemical pulps but can also be applied to any kind of pulp that dissolves completely in CED solution.

Table of contents

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Avant-propos
iv
Introduction
v
1 Domaine d'application
1
2 Références normatives
1
3 Termes et définitions
1
4 Principe
2
5 Réactifs et matériaux
3
6 Appareillage et matériel
3
7 Étalonnage des viscosimètres
5
8 Échantillonnage et préparation de l'échantillon
6
9 Mode opératoire
6
9.1 Choix de la concentration en masse de la solution
6
9.2 Pesage de la prise d'essai
7
9.3 Préparation de la solution pour essai
7
9.4 Détermination du temps d'écoulement
8
10 Calcul
8
10.1 Rapport de viscosité
8
10.2 Indice de viscosité limite
8
10.3 Expression des résultats
9
11 Fidélité
9
11.1 Vérification générale à l'aide d'une pâte de référence
9
11.2 Répétabilité
9
11.3 Reproductibilité
9
12 Rapport d'essai
10
Annexe A (normative) Préparation et analyse de la solution de cupri-éthylènediamine (CED)
11
Annexe B (normative) Valeurs de [êta] khi ro correspondant à différentes valeurs du rapport de viscosité êta ratio (êta/êta 0)
16
Annexe C (informative) Calcul du degré de polymérisation
19
Bibliographie
20

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