Materials Literature
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Abstract Reactive extrusion was employed to graft itaconic anhydride (IA) onto polyethylene, using thermally induced peroxide decomposition. It was found that an increase in IA concentration lead to an increase in the degree of grafting (DOG), but only up to 6 wt % IA. Using di‐cumyl peroxide (DCP) as the initiator re…
The first nonaqueous sol−gel route toward novel functional hybrid lamellar titanates is reported, enabling structural and morphological control of the nanostructured materials. The synthesis occurs at 220 °C in triethyleneglycoldimethylether (triglyme), with TiCl 4 and an amine−BH 3 complex (amine = t BuH 2 N, pyridin…
Self-assembly of nanostructures on surfaces is a promising area in the emerging field of "bottom-up nanolithography". We describe a systematic analysis of hydrophobically capped gold nanoparticle (Au NP) assemblies created within monolayers of saturated phospholipids deposited at the air/water interface. We show that…
Gold nanorods with aspect ratios of 2, 4, and 6 were generated by a seed-mediated growth method developed by Jana et al. and improved by Nikoobakht and El-Sayed. Nanorod formation during synthesis was investigated by time-resolved measurements of small-angle X-ray scattering (SAXS) and in situ UV−vis−NIR absorption. A…
Addressing the risks of nanoparticles requires knowledge about release into the environment and occupational exposure. However, such information currently is not systematically collected; therefore, this risk assessment lacks quantitative data. The goal was to evaluate the current level of nanoparticle usage in Swiss…
Abstract We have investigated polyketone (PK)/polyamide 6 (PA) polymer alloys having enhanced Charpy impact energy greater than that of polycarbonate (PC) as a result of moisture absorption. From the results of differential scanning calorimetry (DSC), Raman spectroscopy, and transmission electron microscope (TEM) obse…
This paper clarifies the reaction order of photoresist removal using atomic hydrogen by investigating the relationship between atomic hydrogen density ( n H ) and photoresist removal rate ( v rmv ). Atomic hydrogen was generated by decomposing hydrogen molecules with a tungsten hot-wire catalyst. In the reaction betwe…
A novel molecule-ion adduct of ammonium molybdate tetrahydrate (AMT) with beta-cyclodextrin (CD) was prepared in this work. Significant differences in spectral properties between AMT and the adduct AMT-beta-CD were observed by a series of experimental probes, such as powder X-ray diffraction, Fourier transformation in…
This article describes an investigation of the corrosion behavior of carbon steel in 2 M HCl solution with the addition of some cyanoacetohydrazide derivatives by weight loss, galvanostatic polarization, and potentiodynamic anodic polarization techniques. The explored methods gave almost similar results. Results obtai…
The temperature dependence of electron spin resonance (ESR) was studied in ${\text{EuFe}}_{2\ensuremath{-}x}{\text{Co}}_{x}{\text{As}}_{2}$ system. The ESR spectrum of all the samples indicates that the linewidth strongly depends on the temperature. Moreover, the linewidth shows the Korringa behavior, indicating an ex…
The thickness dependency of the Curie temperature in stress-free $\text{Pb}({\text{Zr}}_{0.5}{\text{Ti}}_{0.5}){\text{O}}_{3}$ ultrathin films under open-circuit conditions is revealed from the computation of some nontrivial statistical quantities (such as fourth-order cumulants), via a first-principles-based techniqu…
Abstract Two new bis(ketoiminato)zinc(II) compounds that show excellent precursor properties for the chemical vapor deposition (CVD) of zinc oxide materials are presented. The synthesis of the ketoiminato zinc complexes [Zn{[(CH 2 ) x OCH 3 ]NC(CH 3 )=C(H)C(CH 3 )=O} 2 ] ( 1 : x = 2; 2 : x = 3) is straightforward and…
Interfacial thermal resistance (ITR) in bi-layer nanofilms is investigated by nonequilibrium molecular dynamics simulation. The relationships among ITR, interfacial temperature, film thickness, heat flux direction and film materials are investigated. The ITR is found to become lower with increasing interfacial tempera…
We report a mechanistic investigation of the charge transfer processes that occur during photochemical grafting of liquid alkenes to H-terminated surfaces of diamond and amorphous carbon. Spectrally resolved photoelectron yield experiments were performed to directly characterize the photoemission of electrons from the…
The glass fiber/epoxy composites with different loading of organo-montmorillonite (OMMT) were prepared using the hand lay-up technique. The effects of OMMT loading on the mechanical and morphological properties of glass fiber/epoxy/OMMT nanocomposites have been investigated. In this study, the effect of UV exposure on…
A nanolatex copolymer (25−30 nm) of an imidalozium bromide acrylate is reported that provides stable waterborne dispersions of single-walled carbon nanotubes (SWCNT) and thermally and electrically conducting coatings that adhere to plastics. This approach to dispersing SWCNT leaps past previous reports by providing st…
Gastroliths, the calcium storage organs of crustaceans, consist of chitin-protein-mineral complexes in which the mineral component is stabilized amorphous calcium carbonate. To date, only three proteins, GAP 65, gastrolith matrix protein (GAMP), and orchestin, have been identified in gastroliths. Here, we report a nov…
Point contact Andreev reflection (PCAR) measurements indicated that the conductive spin polarization of the Co 2 MnGe Heusler alloy was enhanced substantially by the substitution of Ga for Ge. While the spin polarization of the conductive electrons of Co 2 MnGe and Co 2 MnGa was estimated to be around 0.6, that of the…
We prepared breath figure patterns on functional surfaces by the surface segregation of a statistical glycopolymer, (styrene-co-2-(D-glucopyranosyl) aminocarbonyloxy ethyl acrylate (S-HEAGl). The synthesis of the statistical glycopolymer is prepared in a straightforward approach by conventional free radical copolymeri…
Ultra-small-angle X-ray scattering (USAXS) is capable of probing structural inhomogeneities in the size range of 1 to 1000 nm. Recent developments of X-ray sources and optics make USAXS increasingly relevant to polymer research. In this review, we examine the current technical state of USAXS instrumentation, and brief…