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).
EN ISO 15023-2:2019 history
2019EN ISO 15023-2:2019 Plastics - Poly(vinyl alcohol) (PVAL) materials - Part 2: Determination of properties
2006EN ISO 15023-2:2006 Plastics - Poly(vinyl alcohol) (PVAL) materials - Part 2: Determination of properties