Publications Scientifiques
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Item 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, NourredineThe 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 compositesItem Catalytic preparation, characterization and performance isomerization of M-Xylene by modified montmorillonite prepared by microwave(2013) Chemat- Djennia, Zoubida; Yelda Bakoz, Pemanos; Hamada, BoudjemaItem Contribution of the organo-montmorillonite/graphene pair to the rheological and mechanical properties of polyethylene matrix based nanocomposites(Elsevier, 2017) Rahmaoui, Fath Eddine Zakaria; Mederic, Pascal; Aït Hocine, Nourredine; Aït Saada, Aïcha; Poirot, Nathalie; Belaidi, IdirItem Formation of Benzylidenes-Diacetates catalyzed by activated zeolite "LZY-562" and clay (K10/ZnCl2) : an unexpected functional selectivity(2015) Dokari, H.; Hammadi, M.; Benferrah, N.; Rachedi, Y.Item Preparation and characterization of cellulose/montmorillonite hybrid membranes(2015) Moulahcene-Abdelli, Fethia; Aliouche, DjamelThe compounding of cellulose and inorganic Montmorillonite (MMT) on microscale molecular level has high potential to greatly improve the thermal stability, decay resistance and other properties of cellulose fibres. Pristine Algerian MMT was first sodium modified as Na-MMT, then organically modified as organophilic OMMT by using Octadecylamine. With OMMT and fibrous cellulose from waste cotton, cellulose/MMT composites were prepared via incorporation from solution process and characterized by XRD, FTIR and TGA. Dimethyl Acetamide/Lithium Chloride (DMAc/LiCl) solvent system was used for dispersing cellulose and clay. Results show that the preparation of OMMT was very successful; the X-ray diffraction results revealed that the interlayer spacing (2.17nm) for OMMT was increased compared with that (1.24nm) for Na-MMT. The composites exhibit higher thermal stability; addition of OMMT can considerably increase the decomposition temperature of cellulose matrix. An increase in thermal stability with clay content was observed by thermal analysisItem Relationship between the fractal structure with the shear complex modulus of montmorillonite suspensions(Elsevier, 2016) Gareche, Mourad; Allal, A.; Zeraibi, Noureddine; Roby, F.; Azril, N.; Saoudi, L.Item Fractal analysis of surface roughness of montmorillonite clay self-supported films : effects of exchanged cations and of mechanical tensile stress(Elsevier, 2015) Zabat, M.; Harba, R.; Damme, H.Van