UNE EN ISO 15023-2:2019
Plastics - Poly(vinyl alcohol) (PVAL) materials - Part 2: Determination of properties (ISO 15023-2:2019)
Plásticos. Materiales de poli(alcohol de vinilo) (PVAL). Parte 2: Determinación de las propiedades. (ISO 15023-2:2019).
| Standard number: | UNE EN ISO 15023-2:2019 |
| Pages: | 26 |
| Released: | 2019-11-27 |
| Status: | Standard |
| Pages (Spanish): | 28 |
UNE EN ISO 15023-2:2019
This part of ISO 15023 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 part of ISO 15023 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 part of ISO 15023 includes a number of other properties which are commonly used to specify PVAL materials (see Table 1).