Kikku Fukushima Winkler - Effect of expanded graphite / layered silicate clay on thermal, mechanical and fire retardant properties of Poly (lactic acid)

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  Publication Details (including relevant citation   information):

Kikku Fukushima, Marius Murariu, Giovanni Camino, Philippe Dubois,Polymer Degradation and Stability, 95, 1063-1076, (2010).



  Preparation of PLA based nanocomposites was carried out by using   two different nanofillers: expanded graphite and organically   modified montmorillonite. The addition and co-addition of these   nanofillers to PLA using the melt-blending technique provides   nanocomposites that showed significant enhancements in rigidity,   thermal stability and fire retardancy of the polymer matrix. The   presence of dispersed graphite nanolayers in PLA significantly   accelerated the polyester crystallization, whereas the essential   increase of thermal resistance is mainly connected to the   addition of organoclay. The structure of the nanocomposites was   examined by Wide Angle X-ray Scattering Analysis and Transmission   Electron Microscopy. The improvement of thermal and mechanical   properties obtained by the presence of both nanoparticles in PLA   were associated to the good (co)dispersion and to the   co-reinforcement effect, whilst the fire retardant properties   were found to be related to the combined additive action of both   nanofillers.

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