Influence of intercalation methods in properties of Clay and carbon nanotube and high density polyethylene nanocomposites

Published on Dec 1, 2014in Materials Research-ibero-american Journal of Materials1.468
· DOI :10.1590/1516-1439.303714
Bruna Louise Silva2
Estimated H-index: 2
(UDESC: Universidade do Estado de Santa Catarina),
Fernanda Czerkies Nack1
Estimated H-index: 1
(UDESC: Universidade do Estado de Santa Catarina)
+ 2 AuthorsDaniela Becker12
Estimated H-index: 12
(UDESC: Universidade do Estado de Santa Catarina)
Sources
Abstract
In this work, nanocomposites with simultaneous dispersion of carbon nanotubes and clays in a high density polyethylene (HDPE) matrix were prepared. Two different processes of preparation were employed: solution or melt intercalation. Two different montmorillonite clays were used separately: a natural (MMT-Na) or an organoclay (MMT-30B) and it was used multiwalled carbon nanotubes (MWCNT). Thermal properties were evaluated by DSC and TGA, mechanical properties were evaluated by nanoindentetion and morphology was investigated by transmission electronic microscopy (TEM). Alterations of 20% in crystallinity were detected, increases in Young´s modulus up to 12% were observed and up to 20% of increase was observed in Oliver-Pharr hardness. It is possible to explain part of those results based on the state of dispersion observed in our TEM results.
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