Resumo de eventos cient??ficos
Characterization of polystyrene nanocomposites containing nanoparticles of pseudoboehmite obtained by sol-gel process
Autor
MIRANDA, LEILA F. de
GOULART, LEID J.P.
SILVA, LEONARDO G. de A. e
DONADON, ALEXANDRE C.
YAMASAKI, FABIO Y.
MUNHOZ JUNIOR, ANTONIO H.
INTERNATIONAL CONFERENCE ON DIFFUSION IN SOLIDS AND LIQUIDS, 12th
Resumen
Polymer nanocomposites are hybrid materials in which inorganic substances of nanometric dimensions are
dispersed in a polymeric matrix. These substances have high surface area allowing a better interaction with
the polymeric matrix and consequently promote changes in the physical properties of the final composite
with small additions of the same. The preparation of nanocomposites with polymer matrix allows in many
cases to find a relationship between a low cost due to the use of lower amount of charge, reaching high
level of performance. In this work, were obtained polystyrene nanocomposites with pseudoboehmite
synthesized by the sol-gel process with different concentrations of pseudoboehmite using octadecylamine
as a coupling agent. The nanocomposites were prepared by the melt intercalation technique and
characterized by differential thermal analysis, thermogravimetric analysis, heat deflection temperature, Vicat
softening point, mechanical and rheological tests. The results showed an increase in the thermal properties,
hardness and tensile strength values and decrease in the melt index, impact resistance and tensile
elongation, showing the interaction of the filler with the polymer matrix.