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Characterization of HDPE /Polyamide 6/ Nanocomposites Using Scanning‐and Transmission Electron Microscopy
Author(s) -
Erdmann Eleonora,
Dias Marcos L.,
Pita Victor J. R. R.,
Destéfanis Hugo,
Monasterio Fernanda,
Acosta Delicia
Publication year - 2007
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200751209
Subject(s) - high density polyethylene , materials science , exfoliation joint , organoclay , nanocomposite , montmorillonite , polyamide , scanning electron microscope , composite material , intercalation (chemistry) , polyethylene , chemical engineering , graphene , chemistry , organic chemistry , nanotechnology , engineering
Summary: Preparation and morphology of high density polyethylene (HDPE)/ polyamide 6 (PA 6)/modified clay nanocomposites were studied. The ability of PA 6 in dispersing clays was used to prepare modified delaminated clays, which were then mixed with HDPE. Mixing was performed using melt processing in a torque rheometer equipped with roller rotors. After etching the materials with boiling toluene and formic acid at room temperature, the morphology was examined by SEM analyses, showing that the PA 6 formed the continuous phase and HDPE the dispersed phase. X‐ray diffraction patterns show that the (001) peak of the clay is dramatically decreased and shifted to lower angles, indicating that intercalated/exfoliated nanocomposites are obtained. TEM analyses confirmed the typical structure of exfoliated nanocomposites. A scheme for the mechanism of exfoliation and/or intercalation of these HDPE /PA 6/ /organoclay nanocomposites is proposed.