Nanocomposites-based polyolefins as alternative to improve barrier properties

This work investigates the influence of some ammonium quaternary compounds as coupling agent in polyethylene/clay nanocomposites to improve the performance of polyethylene used as packaging barrier material. The 3 wt % of vermiculite used as a nanofiller was added to linear low-density polyethylene...

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Bibliographic Details
Published in:Journal of applied polymer science 2010-12, Vol.118 (6), p.3695-3700
Main Authors: Carvalho, J.W.C, Sarantópoulos, C, Innocentini-Mei, L.H
Format: Article
Language:English
Subjects:
Applied sciences
barrier
Barriers
Composites
Coupling agents
Exact sciences and technology
Exfoliation
Forms of application and semi-finished materials
Nanocomposites
Nanomaterials
Nanostructure
organoclay
poly-ethylene (PE)
Polyethylenes
Polymer industry, paints, wood
Technology of polymers
Vermiculite
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Summary:This work investigates the influence of some ammonium quaternary compounds as coupling agent in polyethylene/clay nanocomposites to improve the performance of polyethylene used as packaging barrier material. The 3 wt % of vermiculite used as a nanofiller was added to linear low-density polyethylene (LLDPE) and to linear low-density polyethylene grafted with maleic anhydride (LLDPE-g-MA). The analysis results revealed that the influence of both the clay exfoliation in a polymer matrix and the coupling agents on the barrier properties were significant. Among the coupling agents used, cetylpropyldimethylammonium chloride yielded the best result for vermiculite exfoliation. A reduction of up to 18% in the oxygen-permeability coefficient was observed in the nanocompounds with exfoliated vermiculite. The nanocomposite produced with vermiculite did not prove to be efficient as a moisture barrier against according to the analysis performed.
ISSN:0021-8995
1097-4628
1097-4628
DOI:10.1002/app.32507