Chemists at Brazil’s São Paulo State University are using waste from the manufacture of wound dressings to make a biodegradable film suitable for food packaging.
This next-level upcycling uses hydroxypropyl methylcellulose and bacterial cellulose scraps – both of which are sustainable raw materials – left over from industrial processing. The bacterial cellulose scraps from a factory making wound dressing biofilms are first milled into a powder. “Bacterial cellulose can be produced in the laboratory all year round, regardless of weather and environmental conditions.
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