5% of ESBO and 1.5% of DEHA. This composition was selected in
order to get approx. 80 Shore A hardness, which corresponds to a
medium hard and somewhat flexible material like shoe soles. All
films were prepared of same nominal thickness of 15 mm. Detailed
information of samples characterization was described previously
(Coltro, Pitta, & Madaleno, 2013). Sample 1 was adopted as reference
to rate conformance of the PVC cling films as to overall
migration and specific migration, since this sample was produced
with the most commonly used plasticizers in the Brazilian market
e DEHA and ESBO.
Besides those formulated PVC samples four PVC cling films, from
three different producers, were acquired in commercial shops in
Campinas, Brazil, in order to check their conformance as to specific
migration limits established by Brazilian legislation.