Materials Literature
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Abstract In this study, we examined the effect of alkali treatment and its variables, namely, the time (2, 4, 6, or 8 h) and the concentration of alkali (1, 5, or 17.5% w/w), on the linear density, strength, and stress‐relaxation properties of jute fiber. It was demonstrated that this kind of treatment led to the crea…
Abstract An approach leading to unsymmetrical azaphthalocyanines (AzaPcs) bearing one aryloxy and seven butoxy substituents on the periphery is described. Several cyclotetramerization methods were tested, including the template effect of a metal salt in a melt/solution and the Linstead method, but only one was found t…
Copper dodecanoate films prepared by emulsion method exhibit superhydrophobic property with water contact angle of 155° and sliding angle of <2°. The films have been characterised by using X‐ray diffraction, field emission scanning electron microscopy and Fourier transform infrared spectroscopy techniques. Surface…
The current–voltage ( I – V ) characteristics of Fe 3 O 4 /Nb-doped SrTiO 3 (Nb : STO) and Fe 3 O 4 /ZnO junctions prepared by pulsed laser deposition were investigated as a function of temperature. The rectifying behaviour was more distinctive in Fe 3 O 4 /Nb : STO than in the Fe 3 O 4 /ZnO. Contrary to Fe 3 O 4 /Nb…
Abstract A copolymer resin ( p ‐APDF) has been synthesized using the monomers p ‐aminophenol, dithiooxamide, formaldehyde in 1 : 1 : 2 M proportions in the presence of 2 M HCl as catalyst. The structure of p ‐APDF copolymer has been elucidated on the basis of elemental analysis and various physicochemical techniques,…
Abstract A novel, efficient, and ecocompatible electro copolymerization of anilines at platinum electrode using acetonitrile as non‐aqueous solvent and lithiumperchlorate as supporting electrolyte was carried and described here. The progress and mechanistic study of copolymerization was done using cyclic voltammetry.…
Spatio-temporal changes in taxonomic composition and structure of a diatom community were assessed between June 2006 and June 2007 at the intertidal zone of Homa lagoon, Izmir, Turkey. The communities were composed of a mixture of epilithic, epiphytic, epipsammic, and occasionally some pelagic diatoms. In total, 87 ta…
Temperature changes in the components of piezoelectric, elastic and dielectric tensors were studied in L-alanine crystals in the range 100-300 K. A jumpwise increase in the c(55) component of the elastic stiffness accompanied by maxima in damping of all face-shear modes observed at 199 K in L-alanine crystal were inte…
Abstract The influence of temperature during reactive extrusion of poly( L ‐lactide) (PLLA) on the molecular architecture and crystallization behavior was investigated for OO ‐( t ‐butyl) O ‐(2‐ethylhexyl) peroxycarbonate‐modified polymer. The long chain–branched PLLA (LCB‐PLLA) content and its structure in the result…
The failure cause of Φ127mm G105 IEU drill pipe upset was investigated through mechanical properties testing, optical morphologies and fracture surface analysis. The result show that drill pipe upset’s failure reason is the elephant hide and decarburization layer in its out-surface caused by improper upset treatment i…
The forming limit diagram of magnesium alloy ZK60 was developed with Hill’s instability criterion and M-K analysis. The relationship of forming limit with stain path, temperature and the thickness irregular coefficient were analyzed. The results show that the forming limit of ZK60 magnesium alloy increased little with…
It has a great tendency to the problem of environmental cracking under the service condition of LPG containing wet H2S surpassing the lowest allowance for steels. In order to quantitatively evaluate the cracking susceptibility on this steel in the wet H2S environment, the pre-fatigue crack M-WOL specimen stress corros…
Abstract Poly(vinyl chloride)(PVC) and dioctyl phthalate (DOP) were mixed with 5 and 10 wt % of Cloisite Na + , Cloisite 30B or Cloisite 93A. The obtained nanocomposites were characterized by thermal analysis using a thermogravimetric analyzer which showed that addition of 5 wt % of nanoclay to PVC increased its therm…
Gold nanoshells have been intensively investigated and applied to various biomedical fields because of their flexible optical tunability and biological compatibility. They hold great potential to serve as luminescent contrast agents excitable with near-infrared (NIR) lasers. In this paper, we describe the development…
Resistivity \ensuremath{\rho}($T$), Hall coefficient ${R}_{\mathrm{H}}$($T$), superconducting temperature ${T}_{c}$, and the slope of the upper critical field \ensuremath{-}d${H}_{c2}/$d$T$ were studied in poly- and single-crystalline samples of the Fe-based superconductor Lu${}_{2}$Fe${}_{3}$Si${}_{5}$ irradiated by…
Graphene is a leading contender for the next-generation electronic devices. We report a method to produce graphene membranes in the solution phase using polymeric imidazolium salts as a transferring medium. Graphene membranes were reduced from graphene oxides by hydrazine in the presence of the polyelectrolyte which i…
La 3+ (lanthanide 3+) ion doping may significantly improve the photoluminescence properties of CaSi 2 O 2 N 2 : Eu 2+ , a potential yellow–green phosphor for ultraviolet or blue light-emitting diodes. The optimization mechanism was studied in detail by the case of La 3+ doping. The La 3+ ions could stabilize Ca 2+ vac…
A rigorous analytical solution for the description of wave dynamics originated at the interface between a homogeneous half-space and a half-space metamaterial made by arrayed plasmonic nanospheres is presented. The solution is cast in terms of an exact analytical representation obtained via a discretized Wiener–Hopf (…
Three isomers of chondroitin sulfate (CS), i.e., CS-A, CS-B, and CS-C, are investigated as nanotube dispersants and are found to have vastly different abilities to disperse single-walled carbon nanotubes (SWNTs) in water due to their different intramolecular interactions. Only CS-A and CS-C effectively disperse SWNTs…
The effect of nanocrystallization on the electronic conductivity of 10 ZnO –30 Fe 2 O 3 –60 P 2 O 5 glass has been investigated using differential thermal analysis ( DTA ), XRD , R aman, and impedance spectroscopy. The structural evolution of glass during heat treatment at various temperatures for 24 h is characterize…