As concerns grow about the environmental and health impacts of plastic waste, scientists are accelerating efforts to develop safer, biodegradable alternatives. At Flinders University in South Australia, several research teams are working on new materials designed to reduce pollution from single use plastics.
Science Daily portal cited a recent study published in Polymers, researchers created a thin, flexible film using calcium caseinate, a commercially available form of casein, the primary protein found in milk. They blended it with modified starch and bentonite nanoclay, then added glycerol and polyvinyl alcohol to improve durability and flexibility. The goal was to produce a material that performs like conventional plastic while being far more environmentally friendly.
Tests showed the material steadily decomposed under normal soil conditions, with full breakdown estimated within 13 weeks. The findings provide early evidence that combining biopolymers with nanoclay suspensions can produce functional films suitable for sustainable food packaging.
Safety was also evaluated. Microbial testing found bacterial colony levels remained within acceptable limits for non-antimicrobial biodegradable films, suggesting low toxicity.
“We would recommend further antibacterial evaluations in further testing and development,” says Professor Youhong Tang, a nanomaterials researcher at the Tonsley Campus, Flinders College of Science and Engineering.
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