Materials Literature
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In this work, sericite mica was initially modified with a multi‐step procedure and the novel composites of polyimide (PI) with the organophilic sericite mica were subsequently synthesized via in situ polymerization technique. XRD patterns revealed d 002 ‐spacing of clay was expanded from 0.99 to 2.77 nm. TEM photograp…
In the review hybrids of cationic porphyrins ( i.e. porphyrins functionalized by quaternary pyridinium groups) with nanocarbons such as fullerenes, carbon nanotubes and graphene are described. Selected examples of these species are characterized in regard of their properties and possible applications.
In this study, the possibility to modify low density polyethylene (PE-LD) with fly ash (FA) was tested. Four series of PE-LD composites filled with 1, 5, 20 or 50 wt % of FA were prepared by injection molding. The samples in each of the series differed in particle size of the filler used (0—15 µm, 15—30 µm, 30—60 µm).…
The electric and magnetic properties of anion-substituted antiferromagnetic MnSe1−xTex (0.1 ≤ x ≤ 0.4) semiconductors in the 77–700 K temperature range and magnetic fields under 1 T are studied. In the MnSe1−xTex solid solutions, negative magnetoresistance in the vicinity of the Néel temperature for x = 0.1 and for co…
Injectable biomaterials are being developed for a wide range of biomedical applications; however, characterization of materials (e.g., distribution, chemical composition) after injection is often difficult and relies on invasive and destructive procedures. To address this problem, this study utilizes a new magnetic re…
We show how a structural modification of graphene, which gives the carbon allotrope graphyne, can induce an energy gap at the $K$ point of the Brillouin zone. Upon adsorption on metallic surfaces, the same mechanism is responsible for a further modification of energy bands which occurs via the charge transfer mechanis…
ABSTRACT Fabrication, characterization, and a comparative study have been performed for chitosan‐based polymer electrolytes using two different dispersion media. Chitosan gel film (solid) electrolytes are fabricated using acetic acid or adipic acid as the dispersant for chitosan in combination with ionic liquid and li…
Polymer blends of incompatible components need to undergo compatibilization, in order to give rise to a blend with good physical properties. At the same way, polymer/clay nanocomposites show this problem because of different chemical nature of the polymer matrix and of the clay. Compatibilization is therefore more nec…
Multi walled carbon nanotubes (MWCNTs) were successfully synthesized using custom-made 80 nm pore-size alumina templates, and were uniformly filled with nickel ferrite (NFO) nanoparticles of 7.4 ± 1.7 nm diameter using a novel magnetically assisted capillary action method. X-ray diffraction confirmed the inverse spine…
This letter presents an infrared (IR) focal plane array (FPA) with metamaterial absorber (MMA) integrated to enhance its performance. A glass substrate, on which arrays of bimaterial cantilevers are fabricated as the thermal-sensitive pixels by a polyimide surface sacrificial process, is employed to allow the optical…
Abstract The entropically driven coassembly of nanorods (cellulose nanocrystals, CNCs) and nanospheres (dye‐labeled spherical latex nanoparticles, NPs) was studied in aqueous suspensions and in solid films. In mixed CNC‐latex suspensions, phase separation into an isotropic latex‐NP‐rich and a chiral nematic CNC‐rich p…
Borhan A. Albissa*, M-Ali AL-Akhrasb & Ihab Obaidatca Nanomaterials and Magnetism Lab, Physics Department, Jordan University of Science and Technology, 22110, Irbid, Jordanb Bio-Medical Physics Lab, Physics Department, Jordan University of Science and Technology, 11220, Irbid, Jordanc Physics Department, United Arab E…
We report the synthesis, crystallographic, optical, and triplet and singlet oxygen generation properties of a series of BF2 -rigidified partially closed chain bromotetrapyrroles as near infrared emitters and photosensitizers. These novel dyes were efficiently synthesized from a nucleophilic substitution reaction betwe…
The exposition of thermoplastic composites reinforced with natural fibers to moisture and heat is likely to lower their mechanical properties and restrain their use in the design of parts. The present work is focussed on investigating the effects of hygrothermal aging on the mechanical behaviour of injected polypropyl…
NAD(+) use is an ancestral trait of isocitrate dehydrogenase (IDH), and the NADP(+) phenotype arose through evolution as an ancient adaptation event. However, no NAD(+)-specific IDHs have been found among type II IDHs and monomeric IDHs. In this study, novel type II homodimeric NAD-IDHs from Ostreococcus lucimarinus C…
The dissolution kinetics of colloidal MnO 2 in aqueous hydrochloric acid is studied at 298 K by spectrophotometric methods. The decay profile of MnO 2 monitored by measuring absorbance due to MnO 2 at 390 nm was exponential. As the hydrochloric acid concentration was increased from 1.26 to 5.03 M, the dissolution rate…
The Mars Science Laboratory (MSL) CheMin instrument on the Curiosity rover is a transmission X-ray diffractometer (Co-Kalpha radiation source and a approx.5deg to approx.52deg 2theta range) where the analyzed powder samples are constrained to have discrete particle diameters <150 microns by a sieve. To date, diffracti…
ABSTRACT In this work, natural rubber/aramid fiber (NR/AF) composites were prepared with master batch method. AF was modified by using epoxy resin (EP) and accelerator 2‐ethyl‐4‐methylimidazole (2E4MZ) through surface coating on the basis of the complexing treatment with CaCl 2 solution. Hydroxyl‐terminated liquid iso…
Robust insulating rhombohedral Bi1−xLaxFe1−yTiyO3 multiferroic ceramics with 0.02 ≤ x ≤ 0.12 and 0.01 ≤ y ≤ 0.08 are prepared by a refined solid-state reaction electroceramic processing. Residual internal tensile stresses existed in the ceramics according to unit cell volume enlargement observed by X-ray diffraction a…
The electronic and structural details for the acetylene selective catalytic activation by one of the few small gold clusters whose experimental gas-phase initial geometry in neutral charge state is known, the gold heptamer, are investigated. Doing an exhaustive search of the acetylene–gold heptamer ZORA scalar relativ…