Publications Internationales

Permanent URI for this collectionhttps://dspace.univ-boumerdes.dz/handle/123456789/13

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    Properties of clay/graphene/thermoplastic nanocomposites in relation to their composition : synergetic effect of hybrid nanofillers and role of matrix
    (Elsevier, 2022) Mederic, Pascal; Rahmaoui, Fath Eddine Zakaria; Ait Hocine, Nourredine
    The structural, rheological, thermal and mechanical properties of composites, constituted of a polyamide 12 filled with commercial graphene nanoplatelets and organically modified nanoclays, were investigated. Different graphene/clay ratios were used in order to better understand the role played by each kind of filler in the improvement of the end-use properties of prepared composites. With this aim in view, the dispersion state of fillers in ternary nanocomposites was evaluated in comparison with those of graphene PA and clay PA binary composites. Measured rheological and mechanical properties of ternary systems were discussed in comparison with those calculated as the sum of the contributions of graphene and clay in the PA matrix, underlining the combined roles of both fillers in the improvement of composite properties. On the other hand, structural and end-use properties of the 5 wt% graphene 5 wt% clay PA material were compared with those obtained in the past for the composite constituted with a high viscous polyethylene/maleic anhydride grafted polyethylene matrix filled with same commercial graphene nanoplatelets (5 wt%) and similar organically modified montmorillonite fillers (5 wt%). This comparison aimed at understanding the role played by the matrix in the dispersion states of both clay and graphene fillers, and consequently in the end-use properties of composites
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    Synthesis, characterization and morphology of new aliphatic-aromatic copolyesters based on trans-1,3- indanediol
    (Taylor and Francis Online, 2018) Guemmour, Hind; Benaboura, Ahmed
    In this article we report the study on the synthesis and thermal characterization of a new family of aliphatic/aromatic copolyesters that incorporate pure isomer trans-1,3-indanediol. The aromatic diacid terephthaloyl chloride and aliphatic diols HO–(CH2)n–OH with various methylene lengths have been used as co-monomers. The aliphatic diols employed in this study are 1,3-propanediol, 1,4-butanediol, 1,7-heptanediol and 1,10-decanediol. The relevant properties of the synthesized aliphatic–aromatic copolyesters involve viscosity measurements, IR spectroscopy, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM). The obtained aliphatic-aromatic copolyesters present thermostable nature and semi-crystalline properties.
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    Properties of multilayered sandwich panels with an agglomerated cork core for interior applications in buildings
    (Springer, 2017) Lakreb, Nadia; Knapic, Sofia; Machado, José Saporiti; Bezzazi, Boudjema; Pereira, Helena
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    Valorization of waste jute fibers in developing low-density polyethylene /poly lactic acid bio-based composites
    (SAGE, 2015) Boubekeur, Bahia; Belhaneche-Bensemra, Naima; Massardier, Valérie