Extrusion and characterization of functionalized cellulose whiskers reinforced polyethylene nanocomposites
作者： Aparecido Junior de Menezes , Gilberto Siqueira , Antonio A.S. Curvelo , Alain Dufresne
DOI: 10.1016/J.POLYMER.2009.07.038
关键词:
摘要: The surface of ramie cellulose whiskers has been chemically modified by grafting organic acid chlorides presenting different lengths the aliphatic chain an esterification reaction. occurrence chemical modification was evaluated FTIR and X-ray photoelectron spectroscopies, elemental analysis contact angle measurements. crystallinity particles not altered grafting, but it shown that covalently grafted chains were able to crystallize at when using C18. Both unmodified functionalized nanoparticles extruded with low density polyethylene prepare nanocomposite materials. homogeneity ensuing nanocomposites found increase length chains. thermomechanical properties processed studied differential scanning calorimetry (DSC), dynamical mechanical (DMA) tensile tests. A significant improvement in terms elongation break observed sufficiently long on nanoparticles. It ascribed improved dispersion within LDPE matrix.
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