Search
Now showing items 1-10 of 184
Effect of both nano-sized alumina particles and severe deformation on polyethylene crystallinity index
Based on the literature survey, there is no any evidence of study concentrated on polyethylene-alumina nanocomposites. Thus, the main goal of this study is to fabricate polyethylene-alumina nanocomposites by high energy ball milling as a new method...
A Study on the Effect of Nano Alumina Particles on Fracture Behavior of PMMA
Abstract: In the current research, the role of nano-sized alumina on deformation and fracture mechanism of Poly Methyl Methacrylate (PMMA) was investigated. For this purpose, PMMA matrix nanocomposite reinforced with different wt% of alumina (i...
Effect of both nano-size alumina particles and severe deformation on polyethylene crystallinity index
The morphological and microstructural changes during ball milling of PE powder mixed
with different weight percent (5–15 wt%) of Alumina particles (50–100 nm) were studied.
The milling was performed in a planetary ball mill for various...
Effect of Mechanical Milling on the Thermal Behavior of Polyethylene Reinforcedwith Nano-sized Alumina
that regular shape
powder converted to the flake shapes as milling time increased.
Also the results illustrated that an increase in milling time
caused to decrease the agglomeration of alumina. The DSC
profiles of samples elucidated...
Microwave assisted the synthesis of ZnO and CuO promoted alumina for esterification reaction
. In fact, biodiesel is as a pure diesel fuel from natural and renewable resources such as vegetable oil is made. And catalysts have an important role in production of biodiesel from vegetable oils. In this work, we were studies on alumina and modifying...
Effect of substrate properties on the formation of plasma sprayed alumina splats
The effect of substrate characteristics on the formation of plasma-sprayed alumina splats was studied using both experiments and numerical simulation. Knowledge of the particle and substrate conditions is critical in understanding coating formation...
Production of biodiesel from oleic acid using sulfated alumina as a heterogeneous acid catalyst
, transesterification occur simultaneously and are reusable [3,4]. In this work, sulfated alumina as a solid acid catalyst was prepared by impregnation method with different SO42- contents (from 0.1 to 3 molarity of H2SO4). The samples were characterized using XRD, BET...
Preparation of Nano-Size Al-Promoted Sulfated Zirconia and the Impact of Calcination Temperature on Its Catalytic Activity
that an increase of sulfate and alumina groups causes a raise in the acidity of catalyst. Furthermore, the calcined Al-promoted and non-promoted sulfated zirconia would convert 96.10 % and 89.36 % of oleic acid to biodiesel, respectively. Therefore, Al2O3/S-ZrO2...