Elaboration and Characterization of Active Films Containing Iron-Montmorillonite Nanocomposites for O₂ Scavenging.

ABSTRACT: Iron particles of sizes between 6 and 20 nm forming aggregates of 57 ± 17 nm were synthesized by chemical reduction of iron precursors on the surface of montmorillonite (MMT). This active MMT-Fe powder was then uniformly distributed in a linear low-density polyethylene (LLDPE) matrix by extrusion at atmospheric conditions, as confirmed by wide-angle X-ray scattering (WAXS), which also detected a partial exfoliation of the nanoclays. Thermogravimetric analysis (TGA) did not detect any significant modification of the degradation temperature between nanocomposites and active nanocomposites. ⁵⁷Fe Mössbauer spectroscopy evidenced the formation of a majority of iron boride in MMT-Fe as well as in the active film containing it. The LLDPE.Fu15.MMT-Fe3.75 and LLDPE.Fu15.MMT-Fe6.25 films

SUBMITTER: Kombaya-Touckia-Linin EM 

PROVIDER: S-EPMC6780512 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature