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Formulation and characterization of polyethylenes and organo-clays. Barrier properties of the obtained nano-composites; Formulation et caracterisation de polyethylenes charges avec des argiles. Proprietes barriere des nanocomposites obtenus

Abstract

The particularity of polymer layered silicate nano-composites is based on the exfoliation of the clay platelets in the polymer matrix. Therefore properties may be dramatically modified with very low clay loading. In this work polyethylene and organo-clay have been melt blended. Due to a lack of polarity, the polymer chains do not intercalate the clay stacking. However exfoliation is achieved using maleate polyethylene. We used this polymer as a compatibilizer to promote clay exfoliation in the polyethylene matrix. Partial exfoliation is obtained. Barrier properties of these materials have been characterized. Permeability is higher for the clay reinforced products than their matrix. To understand the poor permeability results a tortuosity model has been developed. The quality of the interface seems to be involved. Several organo-clays and compatibilizers have been tested to improve it. But for the concentrations of these products used polyethylene clay interactions always exist and lead to an increase of diffusion. (author)
Authors:
Publication Date:
Oct 01, 2004
Product Type:
Thesis/Dissertation
Report Number:
IFP-58537
Reference Number:
RN05136585; TVI: 0510
Resource Relation:
Other Information: TH: These sciences de la matiere, de l'information et du vivant, specialite: physique; 217 refs.
Subject:
02 PETROLEUM; RESEARCH PROGRAMS; POLYETHYLENES; RHEOLOGY; PERMEABILITY; X-RAY DIFFRACTION; CLAYS; NANOSTRUCTURES; MORPHOLOGY
OSTI ID:
20648636
Research Organizations:
Institut Francais du Petrole (IFP), 92 - Rueil-Malmaison (France); Universite de Bretagne Occidentale, 29 - Brest (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR0503386
Availability:
Commercial reproduction prohibited; OSTI as DE20648636
Submitting Site:
FR
Size:
221 pages
Announcement Date:
Nov 28, 2005

Citation Formats

Wache, R. Formulation and characterization of polyethylenes and organo-clays. Barrier properties of the obtained nano-composites; Formulation et caracterisation de polyethylenes charges avec des argiles. Proprietes barriere des nanocomposites obtenus. France: N. p., 2004. Web.
Wache, R. Formulation and characterization of polyethylenes and organo-clays. Barrier properties of the obtained nano-composites; Formulation et caracterisation de polyethylenes charges avec des argiles. Proprietes barriere des nanocomposites obtenus. France.
Wache, R. 2004. "Formulation and characterization of polyethylenes and organo-clays. Barrier properties of the obtained nano-composites; Formulation et caracterisation de polyethylenes charges avec des argiles. Proprietes barriere des nanocomposites obtenus." France.
@misc{etde_20648636,
title = {Formulation and characterization of polyethylenes and organo-clays. Barrier properties of the obtained nano-composites; Formulation et caracterisation de polyethylenes charges avec des argiles. Proprietes barriere des nanocomposites obtenus}
author = {Wache, R}
abstractNote = {The particularity of polymer layered silicate nano-composites is based on the exfoliation of the clay platelets in the polymer matrix. Therefore properties may be dramatically modified with very low clay loading. In this work polyethylene and organo-clay have been melt blended. Due to a lack of polarity, the polymer chains do not intercalate the clay stacking. However exfoliation is achieved using maleate polyethylene. We used this polymer as a compatibilizer to promote clay exfoliation in the polyethylene matrix. Partial exfoliation is obtained. Barrier properties of these materials have been characterized. Permeability is higher for the clay reinforced products than their matrix. To understand the poor permeability results a tortuosity model has been developed. The quality of the interface seems to be involved. Several organo-clays and compatibilizers have been tested to improve it. But for the concentrations of these products used polyethylene clay interactions always exist and lead to an increase of diffusion. (author)}
place = {France}
year = {2004}
month = {Oct}
}