Bioplastic films with unusually good oxygen barrier properties based on potato fruit-juice
Poulose, Simi; Jönkkäri, Ilari; Hedenqvist, Mikael S.; Kuusipalo, Jurkka (2021)
Poulose, Simi
Jönkkäri, Ilari
Hedenqvist, Mikael S.
Kuusipalo, Jurkka
2021
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202104193088
https://urn.fi/URN:NBN:fi:tuni-202104193088
Kuvaus
Peer reviewed
Tiivistelmä
In this study, the use of potato fruit juice (PFJ) to make plastic films is presented. PFJ is an interesting raw material as it is obtained as a by-product from the potato-starch industry. The films showed uniquely high oxygen barrier properties, and the PFJ material is therefore a potential replacement for the most commonly used, expensive and petroleum-based ethylene-vinyl alcohol copolymer (EVOH) as a barrier layer in future packaging. The films also exhibit good grease resistance. As expected for hydrophilic materials, they exhibited high water vapour transmission rate, which shows that they, as for EVOH, have to be laminated with hydrophobic polymers in food packaging. The films, having a glass transition temperature between −5 °C and 10 °C, showed elastic-plastic behaviour with stable crack growth.
Kokoelmat
- TUNICRIS-julkaisut [17001]