Bottom-Up Development of Nanoimprinted PLLA Composite Films with Enhanced Antibacterial Properties for Smart Packaging Applications

In this work, polymer nanocomposite films based on poly(L-lactic acid) (PLLA) were reinforced with mesoporous silica nanoparticles, cellular foam (MCF) and Santa Barbara amorphous-15 (SBA). PLLA is a biobased aliphatic polyester, that possesses excellent thermomechanical properties, has already been commercialized for packaging applications. The aim was to utilize nanoparticles have established as nanocarriers enhance the mechanical thermal properties of PLLA. Since introduction antibacterial become an emerging trend in applications, achieve effective antimicrobial activity, micro/nano 3D micropillars decorated cone- needle-shaped nanostructures implemented surface by means nanoimprint lithography (t-NIL), novel feasible fabrication technique multiple industrial materials characterized regarding their composition crystallinity using Fourier transform infrared spectroscopy (FT-IR) X-ray diffraction (XRD), respectively, differential scanning calorimetry (DSC) thermogravimetric analysis (TGA). Their examined nanoindentation technique, while films’ activity against bacteria Escherichia coli Staphylococcus aureus strains tested vitro. results demonstrated successful production films, which exhibited improved compared pristine material, well notable setting new groundwork potential development smart materials.