Publications Internationales
Permanent URI for this collectionhttps://dspace.univ-boumerdes.dz/handle/123456789/13
Browse
5 results
Search Results
Item Vinyl acetate Semi-Continuous emulsion terpolymerization with butyl acrylate and 2-Ethyl hexyl acrylate monomers(Springer, 2021) Guemmour, Hind; Kheffache, DjaffarIn this article we report preparation, physico-chemical and mechanical characterization of poly (vinyl acetate) (PAVc) fi lms resulting from the copolymerization of vinyl acetate (VAc) with two acrylate monomers, butyl acrylate (BuA) and 2‐ethyl hexyl acrylate (2-EHA) via emulsion polymerization method. Vinyl acetate (VAc) was used as principal monomer and copolymerized with butyl acrylate (BuA) and 2‐ethyl hexyl acrylate (2-EHA) at the feeding ratio of 85/15/0, 85/0/15, 85/5/10, 85/10/5, 85/7.5/7.5 wt % of VAc/BuA/2-EHA using deionised water as dispersion medium. The semi-continuous emulsion polymerization was carried out in the presence of potassium persulfate used as free radical initiator, two emulsifiers, anionic and non-ionic surfactants and hydroxyethyl cellulose (HEC) used as a protective colloidal. The obtained copolymers were further analysed by Brookfi eld viscosimeter, Fourier transform infrared spectroscopy (FTIR/ATR), thermogravimetric analysis (TGA/DTG), scanning electron microscopy (SEM) and mechanical tests. The infl uence of composition on thermal characteristics of the obtained fi lms is describedItem Synthesis, characterization and morphology of new aliphatic-aromatic copolyesters based on trans-1,3- indanediol(Taylor and Francis Online, 2018) Guemmour, Hind; Benaboura, AhmedIn 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.Item Synthesis and characterization of aliphatic-aromatic copolyesters based on Cis-1,3-indanediol(Springer, 2013) Guemmour, Hind; Benaboura, AhmedItem Conformational and NMR analysis on cis 1,3-indanediol(Elsevier, 2011) Guemmour, Hind; Kheffache, Djaffar; Benaboura, AhmedItem Conformational analysis and intramolecular hydrogen bonding of cis-3-aminoindan-1-o l : a quantum chemical study(Springer, 2013) Kheffache, Djaffar; Guemmour, Hind; Dekhira, Azzedine; Benaboura, Ahmed; Ouamerali, Ourida