Materials Literature
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Polyurethane (PU) components of cardiovascular devices are subjected to oxidation-initiated surface degradation, which leads to cracking and ultimately device failure. In the present study, we investigated a novel bromoalkylation chemical strategy to covalently attach the antioxidant, di-tert-butylphenol (DBP), and/or…
Abstract Many operators have encountered failures due to MIC in seawater injection systems contaminated with sulphate-reducing bacteria (SRB). In some cases, severe pitting and grooves have resulted in flowlines being abandoned or replaced. On the other hand, there are reports of little or no significant MIC in some s…
Natural gas appears to be a fuel of great interest for solid oxide fuel cell (SOFC) systems. It mainly consists of methane, which can be converted into hydrogen by direct internal reforming (DIR) within the SOFC anode. However, a major limitation to DIR is carbon formation within the ceramic layers at intermediate tem…
Abstract FT‐IR and FT‐Raman spectra of orthanilic acid were recorded and analyzed. Surface‐enhanced Raman scattering (SERS) spectrum was recorded on a silver electrode surface. The vibrational wavenumbers were computed by the ab initio method using HF/6–31G* basis and they were found to be in good agreement with the e…
Abstract This article presents the effects of nanoclay and supercritical nitrogen on the crystallization and thermal behavior of microcellular injection‐molded polyamide‐6 (PA6) nanocomposites with 5 and 7.5 wt% nanoclay. Differential scanning calorimetry (DSC), X‐ray diffractometry (XRD), and polarized optical micros…
With anatase-type titanium dioxide as the raw materials, the rutile type titanium dioxide single crystal is prepared using the floating zone method. The results of XRD measurement show that the grown crystal is highly crystalline with a rutile structure, which has orientation to the c-axis. The four Raman vibration ch…
ZnS nanowires with heterocrystal and bicrystal structures were successfully synthesized using the DC-plasma chemical vapour deposition (CVD) method. The heterocrystalline ZnS nanowires have the zinc blende (ZB) and wurtzite (WZ) zones aligned alternately in the transverse direction but without an obvious period. The b…
When growing one-dimensional (1D) nanomaterials via the vapour–liquid–solid (VLS) model, the substrates usually need to be coated with a layer of catalyst film. In this study, however, an effective approach for the synthesis of boron nitride (BN) nanowires directly onto commercial stainless-steel foils has been demons…
Abstract A number of different CO2 corrosion rate prediction models have been developed for application in oil and gas production systems and are readily available in the literature or as industry standards. These models vary from the empirical models to the more recently developed mechanistic models. In this paper a…
In 2 S 3 nanocrystalline films are prepared on glass substrates by the spray pyrolysis technique using indium chloride and thiourea as precursors. The deposition is carried out at 350°C on glass substrates. The films are then annealed for two hour at 200, 400, 600, and 800°C in O 2 flow. This process allows the transf…
A strong effort has been devoted recently toward processing of metal–ceramic composites with tailored microstructure by colloidal methods. The aim of this work is to optimize the rheological behavior of concentrated Al 2 O 3 –nickel (Ni) aqueous suspensions and further slip casting in order to obtain dense green compo…
In this study, the use of a CO 2 supercritical fluid (SCF) and silver (Ag) nanoparticles is shown to improve the electrical contact between a metal and porous silicon (PS). Earlier problems concerning surface roughness are not observed. Scanning electron microscopy (SEM) showed that SCF processing at 100 °C with Ag na…
In this work, a new capping agent, cinnamic acid (CA) was used to synthesize Au nanoparticles (NPs) under ambient conditions. The size of the NPs can be controlled by adjusting the concentration of reductant (in our experiment sodium borohydride was used) or CA. The CA-stabilized Au NPs can self-assemble into ‘nanowir…
Abstract Salts of the [1,2,5]thiadiazolo[3,4‐ c ][1,2,5]thiadiazolidyl radical anion ( 1 ) and the early alkali metals, [Li(12‐crown‐4) 2 ][ 1 ] ( 3 ), [Na(15‐crown‐5)][ 1 ] ( 4 ), and [K(18‐crown‐6)][ 1 ] ( 5 ) as well as the salt [(Me 2 N) 3 S][ 1 ] ( 6 ) can be prepared by reduction of [1,2,5]thiadiazolo[3,4‐ c ][1…
We report a process for preparing microdot arrays of SiO 2 from a tetraethoxysilane precursor containing either a cationic (CTAB) or non‐ionic surfactant. Controlling the ink jet deposition parameters and precursor hydrolysis made it possible to obtain mesoporous silica with a Pm 3 n cubic structure, using CTAB, or an…
Abstract We report the electropolymerization and characterization of polypyrrole films doped with poly(m‐aminobenzene sulfonic acid (PABS) functionalized single‐walled nanotubes (SWNT) (PPy/SWNT‐PABS). The negatively charged water‐soluble SWNT‐PABS served as anionic dopant during the electropolymerization to synthesiz…
CsBr phosphor ceramics doped with different luminescence centres such as In2O3, Eu2O3, EuCl3, SmCl3, TbCl3, GdCl3 or NdCl3 as the candidate for a new optically-stimulable phosphor for medical X-ray imaging sensor were prepared using a conventional ceramic fabrication process. It was found that X-ray-irradiated Eu-dope…
Abstract Polarized Raman and IR spectra have been measured for Y(HCOO) 3 ·2H 2 O single crystal at room temperature. Assignment of the observed bands to the respective internal and external vibrations was proposed on the basis of factor group approach for the orthorhombic P 2 1 2 1 2 1 (D 2 4 ) space group and the lit…
Experimental investigations have been performed to understand the effects of prior loading on the creep and stress relaxation behavior of an amorphous polymer (polyphenylene oxide) and a semi-crystalline polymer (high density polyethylene) at room temperature. Of particular interest was the positioning of creep and re…
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