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- Title
Influence of high power ultrasound on physical-chemical properties of polypropylene films aimed for food packaging: barrier and contact angle features.
- Authors
Ščetar, Mario; Kurek, Mia; Režek Jambrak, Anet; Debeaufort, Frédéric; Galić, Kata
- Abstract
Investigation was focused on the impact of high power ultrasound (HPUS), also called thermosonication, on the oxygen permeation properties (permeability, solubility and diffusion coefficients) of barrier films aimed for food packaging. For this purpose, biaxially oriented polypropylene (BOPP) coated with acrylic/polyvinylidene chloride (BOPPAcPVDC) and biaxially oriented coextruded polypropylene (BOPPcoex)were used. The physical-chemical profile of the sampleswas determined using goniometry. There is a significant impact only of extreme HPUS conditions (the longest time and the highest amplitude) on the permeability, solubility and diffusion coefficients of oxygen through the BOPP films. The highest influence on the oxygen permeability in both investigated BOPP samples involved an HPUS with an amplitude of 100% during a 6min treatment. However, BOPP samples showed different sensitivities at lower HPUS treatments.
- Subjects
POLYPROPYLENE films; SONICATION; PERMEABILITY; FOOD packaging; CONTACT angle; POLYVINYLIDENE chloride
- Publication
Polymer International, 2017, Vol 66, Issue 11, p1572
- ISSN
0959-8103
- Publication type
Article
- DOI
10.1002/pi.5415