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In the present study, olive oil was used for the preparation of three-component high internal phase emulsions with oil volume fraction of more than 0.77 stabilized by palm-based polyoxyethylene lauryl ether for the first time. These emulsions were investigated on their morphology, structural properties, stability, and hydration efficacy. Droplet size distribution observed from the optical micrographs was in agreement with the light scattering results, which suggested that droplet size was influenced by oil phase and surfactant concentrations. Rheological results exhibiting flow curves cross-over implied structural build-up that gave rise to high stability which was supported by stable three-month storage at an elevated temperature. The hydration efficacy of the emulsion was examined in vivo using a corneometer.

The optical properties of N,N'-bis (Inaphthyl)-N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine (NPB) and tris (8-hydroxyquinolinato) aluminum (Alq 3) organic materials used as hole transport and electron transport layers in organic light-emitting devices (OLED) have been investigated. The NPB and Alq 3 layers were prepared using thermal evaporation method. The results show that the energy band gap of Alq 3 is thickness independence while the energy band gap of NPB decreases with the increasing of sample thickness. For the case of photoluminescence the Alq 3 with thickness of 84 nm shows the highest relative intensity peak at 510 nm.

Acrylonitrile was successfully grafted on polystyrene modified with activated carbon using gammairradiation technique. This process was carried out modified at various gamma dose (0.2 to 1.5 Mrad). The new grafted polymer (GP) was characterized and its properties were investigated. In this study, it was found that 2 gm of polystyrene, 90% (w/w) acrylonitrile monomer, 2% (w/w) ferrous ammonium sulfate (FAS) catalyst, 1 mg activated carbon powder and 1.25 Mrad gamma dose are the optimized conditions required for the polymerization of GP. The grafted polymer was proved by Fourier transform infrared (FTIR), thermo gravimetric analysis (TGA) and UV-visible spectroscopy. A mechanism is presented to explain the formation of GP.