Antimicrobial films and coatings inhibit bacterial growth and have practical applications in public environments. Because bacteria can develop resistance to antibiotics, an alternative is to use silver. Studies indicate that silver cations diffuse through the bacterial membrane and cause cell death by disrupting DNA replication and ATP production. Polymer films containing silver-loaded montmorillonite are a good candidate to study biocidal effects, because they are more durable than polymers that lack fillers and possibly better control the delivery of silver cations.
The antimicrobial effect of films of PLA2002D containing Laponite co-exchanged with Ag+ is being tested.
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