NF EN ISO 15023-2

NF EN ISO 15023-2

April 2019
Standard Current

Plastics - Poly(vinyl alcohol) (PVAL) materials - Part 2 : determination of properties

This document specifies the methods to be used in determining the properties of poly(vinyl alcohol), which is normally prepared by hydrolysis of poly(vinyl acetate) and whose composition comprises vinyl alcohol monomeric units and vinyl acetate monomeric units. This document is applicable to poly(vinyl alcohol) with a vinyl alcohol unit content (degree of hydrolysis) from 70 mol% to 100 mol%.In addition to the designatory properties specified in ISO 15023-1 (degree of hydrolysis and viscosity of an aqueous solution), this document includes a number of other properties which are commonly used to specify PVAL materials (see Table 1).

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Main informations

Collections

National standards and national normative documents

Publication date

April 2019

Number of pages

26 p.

Reference

NF EN ISO 15023-2

ICS Codes

83.080.20   Thermoplastic materials

Classification index

T50-003-2

Print number

1

International kinship

ISO 15023-2:2019

European kinship

EN ISO 15023-2:2019
Sumary
Plastics - Poly(vinyl alcohol) (PVAL) materials - Part 2 : determination of properties

This document specifies the methods to be used in determining the properties of poly(vinyl alcohol), which is normally prepared by hydrolysis of poly(vinyl acetate) and whose composition comprises vinyl alcohol monomeric units and vinyl acetate monomeric units. This document is applicable to poly(vinyl alcohol) with a vinyl alcohol unit content (degree of hydrolysis) from 70 mol% to 100 mol%.

In addition to the designatory properties specified in ISO 15023-1 (degree of hydrolysis and viscosity of an aqueous solution), this document includes a number of other properties which are commonly used to specify PVAL materials (see Table 1).

Replaced standards (1)
NF EN ISO 15023-2
July 2006
Standard Cancelled
Plastics - Poly(vinyl alcohol)(PVAL) materials - Part 2 : determination of properties

ISO 15023-2:2003 specifies the methods to be used in determining the properties of poly(vinyl alcohol), which is normally prepared by hydrolysis of poly(vinyl acetate) and whose composition comprises vinyl alcohol monomeric units and vinyl acetate monomeric units. It is applicable to poly(vinyl alcohol) with a vinyl alcohol unit content (degree of hydrolysis) from 70 mol % to 100 mol %. In addition to the designatory properties specified in ISO 15023-1 (degree of hydrolysis and viscosity of an aqueous solution), ISO 15023-2 includes a number of other properties which are commonly used to specify PVAL materials.

Table of contents
  • Avant-propos
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Détermination des propriétés
  • Annexe A (normative) Détermination de la teneur en matières volatiles
  • Annexe B (normative) Détermination de la teneur en acétate de sodium
  • Annexe C (normative) Calcul du taux de cendres
  • Annexe D (normative) Détermination du degré d'hydrolyse
  • Annexe E (normative) Détermination de la viscosité d'une solution aqueuse à 4 pour cent par la méthode d'essai de Brookfield ou la méthode par chute de bille dans un tube incliné
  • Bibliographie
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