UNE-EN ISO 177:2017

This document specifies a method for the determination of the tendency of plasticizers to migrate fromplastics in which they are contained into other materials or other plastics when they are brought intoclose contact.NOTE 1 The surfaces into which the migration can proceed can also consist of organic surface coatings, suchas lacquers.This test is suitablea) for evaluating the tendency displayed by plastics, particularly in the form of films and sheets, tolose certain of their liquid constituents when they are brought into contact with materials thathave an affinity for plasticizers, andb) for studying the tendency to migrate of plasticizers contained in a resin or a series of resins, in oneor more concentrations.In case b), standard compounds are prepared on the basis of a well-characterized resin with welldefinedratios of plasticizer to resin.NOTE 2 When the absorbent sheets themselves contain a substance capable of migrating, simultaneousmigrations can occur from the test specimens into the absorbent sheets and vice versa.The results may also be affected by the migration of other constituents of the plastic material (forexample, oligomers) or by the loss of any volatile constituents other than plasticizers from the plasticmaterial or the absorbent layer.