2021
DOI: 10.3390/macromol1010005
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Bottom-Up Development of Nanoimprinted PLLA Composite Films with Enhanced Antibacterial Properties for Smart Packaging Applications

Abstract: In this work, polymer nanocomposite films based on poly(L-lactic acid) (PLLA) were reinforced with mesoporous silica nanoparticles, mesoporous cellular foam (MCF) and Santa Barbara amorphous-15 (SBA). PLLA is a biobased aliphatic polyester, that possesses excellent thermomechanical properties, and has already been commercialized for packaging applications. The aim was to utilize nanoparticles that have already been established as nanocarriers to enhance the mechanical and thermal properties of PLLA. Since the … Show more

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Cited by 22 publications
(21 citation statements)
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“…In our previous works it was proved that antimicrobial PLA films can be prepared when hierarchical nanostructures are patterning on film surfaces using nanoimprinted thermolithography [ 136 , 137 ]. The successful formation of the 3D hierarchical nanostructures on PLA films’ surface was proved by SEM ( Figure 8 ).…”
Section: Pla Applicationsmentioning
confidence: 99%
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“…In our previous works it was proved that antimicrobial PLA films can be prepared when hierarchical nanostructures are patterning on film surfaces using nanoimprinted thermolithography [ 136 , 137 ]. The successful formation of the 3D hierarchical nanostructures on PLA films’ surface was proved by SEM ( Figure 8 ).…”
Section: Pla Applicationsmentioning
confidence: 99%
“… SEM micrographs of 3D hierarchical domains on the surface of PLA films at different magnifications: ( a ) black silicon nanostructures on spherical micropillars [ 136 ]; ( b ) rectangular hierarchical nanostructured PLA nanocomposite surfaces [ 137 ]. …”
Section: Figures Schemes and Tablesmentioning
confidence: 99%
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“…Moreover, this technology shows some advantages compared to coatings, while beside the improvement of mechanical properties, the introduction of stability of NPs-additives incorporation without possible migration in media, which is especially appreciated in packaging. The clay-based nanoadditives [ 10 , 11 , 12 , 13 , 14 ], nanocellulose [ 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 ], carbon nanotubes [ 23 , 24 , 25 ], silica NPs [ 26 ], metal and metal oxide NPs [ 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ] which, within the PLA matrix, represent one of the widely studied solutions for the preparation of multifunctional PLA nanocomposites, improving physicochemical, mechanical properties as well as providing thermal and additional antibacterial efficacy and protection of the [ 37 , 38 , 39 , 40 , 41 , 42 ]. In general, the modification of PLA-based NPs composites (PLA-NPs) represents a key strategy for the advantage of maintenance-free sterile surfaces, which are aimed at many plastic products [ 39 ].…”
Section: Introductionmentioning
confidence: 99%
“…To improve on its properties, blending with other polymers or the incorporation of nanofillers is pursued [14]. To achieve effective antimicrobial activity for smart packaging applications, micro/nano 3D micropillars decorated with cone-and needle-shaped nanostructures were implemented on the surface of PLLA/SiO 2 nanocomposite films by means of thermal nanoimprint lithography, a novel and feasible fabrication technique with multiple industrial applications [15].…”
mentioning
confidence: 99%