The Influence of the Type and Concentration of Plasticizer on the Properties of Biopolymer Films based on Wild Flax (Camelina Sativa)

Danijela Šuput; Biljana Lončar; Senka Popović; Nevena Hromiš; Slađana Rakita; Nedeljka Spasevski

doi:10.14232/analecta.2024.3.69-76

Authors

Danijela Šuput University of Novi Sad Faculty of Technology https://orcid.org/0000-0002-2751-7013
Biljana Lončar University of Novi Sad Faculty of Technology https://orcid.org/0000-0003-2994-6871
Senka Popović University of Novi Sad Faculty of Technology https://orcid.org/0000-0003-2994-6871
Nevena Hromiš University of Novi Sad Faculty of Technology https://orcid.org/0000-0001-9382-3409
Slađana Rakita University of Novi Sad Institute of Food Technology https://orcid.org/0000-0002-5968-9493
Nedeljka Spasevski University of Novi Sad Institute of Food Technology https://orcid.org/0000-0002-9059-3588

DOI:

https://doi.org/10.14232/analecta.2024.3.69-76

Keywords:

biopolymer films, Camelina sativa, plasticizers, properties

Abstract

The development of biodegradable packaging materials using naturally occurring, renewable biopolymers has gained attraction due to consumer demand for high-quality products and concerns about environmental waste problems. However, the inferior mechanical properties and low water resistance of packaging materials based on natural polymers pose a significant obstacle to their wider use. One of the ways to improve the properties of biopolymer-based packaging materials is the addition of plasticizers during their synthesis. In this work, the influence of the type and concentration of plasticizer on the properties of new biopolymer films based on wild flax (Camelina sativa) was investigated. Camelina sativa oil cake (CSoC) remains after edible oil cold pressing as a by-product. One of the possibilities for its valorization is the synthesis of biopolymer materials. During the synthesis, different plasticizers - glycerol and polyethylene glycol 400 - were added in different concentrations - 20%-60%. The obtained CSoC-based biopolymer films were analyzed for the following properties: Moisture content, solubility, thickness, tensile strength, elongation at break, and water vapor permeability. The results obtained showed significant differences when different plasticizers were applied at different concentrations. The biopolymer film with optimal properties was obtained by adding glycerol at a concentration of 40%.

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