Materials Literature
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Porous polydimethysiloxane (PDMS) displays both hydrophobic and oleophilic behaviour which makes it a suitable material to absorb oil in an aqueous stream. Furthermore, its elastomeric nature means that porous PDMS can be a reusable sorbent for oil. For such application, porous PDMS has to (i) absorb oil from aqueous…
This paper presented the study on the effect of carbon black as filler to the mechanical properties of natural rubber for base isolation system. This study used the five formulations with the different amount of carbon black filler for every sample. The samples were tested for tensile, hardness and resilience test. Th…
The impact fracture mechanics of the cantilever beam-column specimens with different inclination angles(0°,30°,60°) prefabricated cracks subjected to hammer impact loading were studied by using digital dynamic caustic test system.The results show that the specimen with prefabricated crack of 0° reaches the fracture to…
Structure, morphology and electrochemical properties of iron substituted lithium manganese spinel were investigated. The cyclic capability of obtained materials in aqueous electrolyte was studied. The kinetic characteristics of Li + -ions charge-discharge intercalation were determined.
Abstract In this study, epoxidized rubber seed oil (EeRSO) was utilized as a plasticizer for polylactic acid (PLA) using a melt blending method at five weight ratios of PLA/EeRSO, 100/0, 97.5/2.5, 95/5, 92.5/7.5, and 90/10, respectively. The plasticization of PLA with EeRSO lowered the T g as well as cold‐crystallizat…
The inrush current is one of the most common low-frequency transients, and is crucial for transformer studies and design. Core materials have an impact on the inrush current of transformers due to their different magnetizing characteristics. However, how their differences affect inrush currents and the influence level…
In this paper, a focus was placed on the ability to decrease the amount of testing time while monitoring tan delta and PD simultaneously. Healthy and unaged cables do not need to be subjected to unnecessary stresses if no clear abnormalities are detected in diagnostic values. A case study was presented and able to sho…
The ultrasonic welding of dissimilar plastics is considered. This process depends on the diffusion of molecules to the surface of polymers at temperatures corresponding to the viscoplastic state. The weldability of a pair of dissimilar plastics depends on the compatibility of their acoustic properties, assessed in ter…
Abstract The high-strength steels and tailor welded blanks (TWB) are applied in construction of cars parts to reduction of cars weight [1, 2]. The application of these materials brings possible complicatons during the forming when it proves the considerable influence of stress-strain characteristics differences of of…
The development of bioengineered surface coatings with stimuli-responsive properties is beneficial for a number of biomedical applications. Environmentally responsive and switchable polymer brush systems have a great potential to create such smart biointerfaces. This study focuses on the bioconjugation of cell-instruc…
A pendant drop spreading underneath a partially wetting surface from an initial shape to its final equilibrium configuration and contact angle is studied. A mathematical formulation that quantifies spreading behavior of liquid drops over textured surfaces is discussed. The drop volume and the equilibrium contact angle…
Gelatin extraction from catfish bone using NaOH and its utilization as a template on a synthesis of mesoporous silica-alumina had been investigated. The extraction was prepared by immersing 25 g catfish bone in 125 mL of NaOH in concentration of 0.0; 0.05; 0.10; 0.15 and 0.20 M for 24 h, then washing with demineralize…
The effect of Nb content on microstructure, mechanical properties and phase formation in annealed and quenched binary Ti-Nb alloys were investigated using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD) analysis. The content of Nb varied in the range 0-37 mass…
Alumina ceramics are widely used in the demanding high temperature applications in which the high temperature elastic moduli ( E HT ) is a key property for their reliability and safety. In this paper, the elastic modulus of alumina was determined by dynamic method (impulse excitation technique) and static tests (three…
Tungsten dichalcogenides W X 2 ( X =S, Se) monolayer (ML) attracted much attention due their large spin splitting, which is promising for spintronics applications. However, manipulation of the spin splitting using an external electric field plays a crucial role in the spintronic device operation, such as the spin-fiel…
The objective of this research is to investigate the effect of NaOH treatment on bending strength of lamina composite reinforced by sugar palm fiber. To know of mechanism fracture can be done with visual inspection of the fracture surface. The Materials used are random sugar palm fibers that have been in the treatment…
Upconversion luminescence materials have recently received attentions because of theirs light conversion ability from infrared into visible and ultraviolet light. In this work, alkaline yttrium fluoride doped by ytterbium and thulium (AYF 4 : 20%Yb 3+ , 0.5%Tm 3+ ) were synthesized by molten salt method at 400 °C for…
It has been shown that raising the oxygen impurity concentration in starting mixture components reduces the temperature of the α–β phase transition of silicon nitride. At oxygen contents above 2 wt %, the phase transition involves silicon oxynitride formation and decomposition. With decreasing oxygen impurity concentr…
We demonstrate the use of solution-processed molybdenum trioxide (MoO3) nanoparticle-decorated molybdenum disulfide (MoS2) nanosheets (MoS2/MoO3) as hole injection layer (HIL) in organic lighting diodes (OLEDs). The device performance is shown to be significantly improved by the introduction of such MoS2/MoO3 HIL with…
Oxygen–reduction reaction (ORR) on Gd 0.1 Ce 0.9 O 2−δ (GDC) films with preferential orientations of [100] and [111] have been investigated by using electrochemical impedance spectra combined with direct current (DC) bias. Without DC bias, apparent activation energy for ORR is 0.43 eV on GDC(100) and 1.37 eV on GDC(11…