A team of researchers from Portugal has recently discovered a more environmentally friendly alternative to plastic flagging tape, which is commonly used in crime scenes and construction sites. The team described their findings in a paper published in the World Review of Science, Technology and Sustainable Development.
Plastic flagging tape, made from non-degradable synthetic polymer polyvinyl chloride (PVC), is widely used by law enforcement and construction workers to create temporary boundaries around off-limits areas. However, this widespread use results in a significant amount of single-use plastic waste. The researchers aimed to find a more sustainable and biodegradable alternative.
The study involved the integration of bacterial cellulose (BC) into a cellulose-based film. To improve its longevity, the film was coated with two natural polymers, chitosan and hyaluronic acid. The team also tested the use of natural pigments from carrots and spinach to color the tape for different applications. Mechanical testing demonstrated that the semi-synthetic tape was strong enough for common uses.
Surprisingly, the uncoated BC tape was stronger than the one coated with hyaluronic acid. However, the tape coated with chitosan was weaker, as were the tapes incorporating natural pigments. The researchers concluded that finding the right balance between durability and biodegradability is crucial to effectively reduce the environmental impact of flagging tape.
Although complete biodegradation did not occur during the three-month test period, the study laid the foundations for further development. The researchers aim to formulate a tape with improved mechanical properties, pigment uptake, and biodegradability. This research is particularly important because PVC, the material used in conventional flagging tape, is highly resistant to biodegradation.
By utilizing natural polymers, the researchers hope to pave the way for a more sustainable approach to flagging tape. This biodegradable alternative could have a significant impact on reducing plastic waste generated at crime scenes, construction sites, and other places where flagging tape is used.
The use of plastic flagging tape has long been a concern due to its contribution to plastic pollution. With the discovery of a more eco-friendly option, law enforcement agencies, construction workers, and other users of flagging tape can make a positive environmental impact by adopting this biodegradable alternative.
As the study still requires further development, it is anticipated that the new formulation of flagging tape will be even more durable and biodegradable. This research is an essential step towards a more sustainable future where environmentally friendly materials are used in everyday applications, including flagging tape.
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- Source: Coherent Market Insights, Public sources, Desk research
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