Abstract
Nanocomposites made from a ternary blend of high, low and linear-low density polyethylene (in specific proportions) and bentonite clay nanoparticles, are studied in this work. Particular attention is given to their characterization, mechanical and rheological properties of the nanocomposites. To enhance exfoliation, dispersion and interactions of the particles with the matrix, the particles were modified with L-lysine and one of the components of the matrix (LDPE) was grafted with maleic anhydride groups. With respect to the reference ternary blend, the resulting system presents increases of 13 % in tensile strength, 140 % strain at break, 111 % strength at break, 11 % tear strength with no change in the modulus. When only modified particles are added, a drastic change of the rheological properties is observed, i.e., a lower viscosity and higher relaxation time. This latter behavior has also been observed in other nanocomposite systems.
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