bio-plastics, explain the researchers of Enea, are taken from the "the transformation of the sugars contained in the corn and the beets, while the bio-composites were obtained by adding to the bio-plastic additives, waste from the processing of agri-food sectors typical of the territory".
"We are engaged for years in the challenge for sustainability, in line with the principles of the circular economy, observes Claudia Massaro , researcher at the Enea Brindisi - we are dedicated to the development of solutions to reduce the environmental impact of the containers at the end of life, in line with the objectives of the european directive" on the ban on single-use plastic to 2021.
biofilms intelligent and antimicrobial activities have been developed in collaboration with the university of Salento. The new materials have been developed by adding to the bio-fibres or additives of natural origin deriving from the by-products of the agri-food industry (flax, hemp, vegetation, oil, coffee processing); they have mechanical properties and resistance to fire, and it is to this that can be used also in the furnishing and interiors of the means of transport (cars, trains, planes).
"in Addition to being biodegradable and compostable," explains Massaro - these films are able to provide a specific response to the environment with which the film comes into contact".
Due to the addition of oil of cardanolo (derived from the cashew nut), and a molecule such as porphyrin, "have strong antioxidant properties and antifungal properties, very useful in food packaging", in addition to report the deterioration of the product; they react "actively with the internal atmosphere of the package, it will change color depending on the environment of acid-base with which they are in contact, thus becoming indicators of the state of preservation of the product."
in Addition, by using oxide of zinc and aluminium have been developed biofilms with antimicrobial properties suitable to extend the maturity of the products, in line with the objectives of anti-waste Agenda 2030 the United Nations.
"bio-based plastics and biocompositi at the end of life undergo a process of degradation that produces harmless substances or useful as fertilizer - ends the Farmer - and possess physical and chemical characteristics able to fully replace plastic from fossil fuels".
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