PLA-fMWCNT Bionanofilms with High Modulus and Great Properties to Apply in Packaging and Biomedicine

Physicochemical properties of films based on PLA and reinforced with functionalized carbon nanotubes (fMWCNT), was investigated. The filler was functionalized in order to achieve its good dispersion in the matrix. Fenton reaction was carried out and subsequently a reaction with thionyl chloride and with triethylene glycol was performed. Excellent dispersion of the filler in the PLA matrix was observed for composites with filler concentrations till 0.10 wt%. Nanocomposites showed an important increase in the Young's modulus (almost 50%) and cristallinity till 20% when carbon nanotubes were added. UV-Vis spectra indicated that all the films are transparent in the UV-visible range.