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Bordj El Bahri, Algeria

Kherroub D.E.,Oran University of Science and Technology - Mohamed Boudiaf | Belbachir M.,Oran University of Science and Technology - Mohamed Boudiaf | Lamouri S.,Laboratoire Of Chimie Macromoleculaire
Oriental Journal of Chemistry | Year: 2014

The aim of this work is to obtain an organophilic montmorillonite with Algerian modified clay (termed 12-maghnite). The organic surfactant used in this preparation is 12-aminolauric acid. The functionalization of the organophilic clay was confirmed by infrared spectroscopy (IR). The obtained organoclay was characterized by X-ray diffraction (XRD) which shows a remarkable increase of the basal distance that reaches up to 17.62 Å. The transmission electron microscopy analysis (TEM) supports fully the result obtained by XRD analysis. The novelty of this work is the exploitation of local clay that is widely available, inexpensive and has excellent properties and high quality features, which make it the subject of continuing research. These results will be a starting point and an essential reference for a comparative study, with the results of future works concerning the synthesis of Polymer/12-Maghnite nanocomposites. © 2014, Oriental Scientific Publishing Company. All rights reserved.

Kherroub D.E.,Universite Ibn Tofail | Belbachir M.,Universite Ibn Tofail | Lamouri S.,Laboratoire Of Chimie Macromoleculaire | Bouhadjar L.,Universite Ibn Tofail | Chikh K.,Universite Ibn Tofail
Oriental Journal of Chemistry | Year: 2013

The purpose of this study was to obtain polyamide-6 nanocomposites with national organically modified clay (termed 12-montmorillonite). The formation of polyamide-6 was confirmed by infrared spectroscopy (IR), the prepared nanocomposites were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and thermogravimetric analysis (TGA). The evolution of mechanical properties was also studied. The obtained results confirm the intercalation of molecules of salt in the clay layers, and a good interaction with the polymer, showing the formation of intercalated and/or partially exfoliated structures. The nanocomposites showed higher thermal stability compared to pure polymer, and the mechanical properties presented interesting and promising results.

Sakhri A.,University of Science and Technology Houari Boumediene | Perrin F.X.,University of Toulon | Aragon E.,University of Toulon | Lamouric S.,Laboratoire Of Chimie Macromoleculaire | Benaboura A.,University of Science and Technology Houari Boumediene
Corrosion Science | Year: 2010

The anticorrosion performance of plasticized chlorinated rubber coated mild steel sheets incorporating polyaniline emeraldine salt or zinc phosphate as active pigments were compared using salt spray and immersion in 3.5% NaCl solution. The results obtained by different electrochemical methods indicate the superiority of polyaniline in comparison with zinc phosphate in terms of corrosion protection. The time of the emergence of the first rust spot in 3.5% NaCl solution for the film containing 1.5 wt% polyaniline reach 960 h, which is six times higher than that of the film without polyaniline. The protective mechanism by zinc phosphate and polyaniline pigments were discussed. © 2009 Elsevier Ltd. All rights reserved.

Kherroub D.E.,Oran University of Science and Technology - Mohamed Boudiaf | Belbachir M.,Oran University of Science and Technology - Mohamed Boudiaf | Lamouri S.,Laboratoire Of Chimie Macromoleculaire
Research on Chemical Intermediates | Year: 2015

Nylon 6/clay nanocomposites [1, 3, 5, and 10 % (w/w) 12-maghnite based on the ε-caprolactam content] were synthesized by in situ polymerization. 12-maghnite is a montmorillonite silicate sheet clay was prepared through a straightforward exchange process, using a green natural clay from Maghnia (west of Algeria). Fourier transform infrared spectroscopy confirmed the formation of nylon 6. X-ray diffraction and transmission electron microscopy revealed that the modified montmorillonite layers were uniformly dispersed and exfoliated in the nylon 6 matrix for low levels of clay, while intercalated structures and immiscible regions were detected for high levels. Thermogravimetric analysis revealed that the thermal properties of nylon 6/clay nanocomposites were enhanced with increasing 12-maghnite levels (>500°C). Additionally, the nanocomposites showed a remarkable improvement in their mechanical properties compared to pure polymer. © 2014 Springer Science+Business Media.

Sayhi M.,University of Science and Technology Houari Boumediene | Haine N.,University of Science and Technology Houari Boumediene | Belaabed B.,Ecole Superieure des Techniques de lAeronautique | Lamouri S.,Laboratoire Of Chimie Macromoleculaire | Vigneras V.,French National Center for Scientific Research
Journal of Macromolecular Science, Part B: Physics | Year: 2015

Conducting polymer blends were prepared using polyaniline doped with para- toluene sulfonic acid (PTSA-PANI) and a polyester polyol-based polyurethane (PU). The morphological, thermal and dielectric properties of the PTSA-PANI/PU blends in the frequency range of 1-5 GHz (S band) were investigated. It was found that the morphology of the samples was affected by the PTSA-PANI loading, resulting in the formation of agglomerates and pathways when above 10 wt%. The thermal stability of the composites was improved with increased PTSA-PANI loading. The electrical conductivity percolation threshold was obtained at 2.5% of PTSA-PANI loading and the electrical conductivity reached the value of 0.13 S/m at a PTSA-PANI loading of 30 wt%. The obtained results for the PTSA-PANI/PU blends prepared indicate a high potential for their successful use in electrical and electromagnetic applications. © 2015 Copyright © Taylor and Francis Group, LLC.

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