Materials Literature
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Hydroxyl-capped polylactic acid (PLA) oligomers are prepared by glycolysis reaction of PLA with ethylene glycol (EG) and used as a macromolecular cross-linker for epoxidized natural rubber (ENR). The glycolyzed PLA (GPLA) with three different molecular weights (2000, 10,000, and 44,000 g mol −1 ) are prepared by varyi…
The preparation of a poly(vinyl alcohol)/poly(acrylic acid)/glyoxal film (PVA = poly(vinyl alcohol); PAA = poly(acrylic acid)) with high tensile strength and hydrophobic properties by using the crosslinking reaction for OH group removal is reported herein. PAA was selected as a crosslinking agent because the functiona…
In this study we propose the high-performance technology to produce carbon nanotubes (CNT) in plasma jet reactor by means of a direct current plasma torch. This technology provides excellent opportunities to investigate a direct evaporation of materials and their subsequent condensation on the carbon surface. Experime…
The present paper reports the synthesis and characterization, photoluminescence thermoluminescence and mechanoluminescence studies of Ce 3+ doped SrZrO 3 phosphors. The effects of variable concentration of Cerium on meachanoluminescence (ML) and photoluminescence behavior were studied. The samples were prepared by com…
Metal chalcogenides based on heterometallic Ge-Cu-S offer dual attractive features of lattice stabilization by high-valent Ge(4+) and band gap engineering into solar region by low-valent Cu(+). Herein via cationic amine intercalation, we present three new copper-rich materials with the Cu-to-Ge ratio as high as 3. Two…
The various classes of gene delivery vectors possess distinct advantages and disadvantages, each of which impacts on cargo loading, delivery and, ultimately, its function. With this in mind, herein we report on a small layered double hydroxide (sLDH)-liposome composite system, drawing upon the salient features of LDH…
Mg alloys are gaining interest for applications as biodegradable medical implant, including Mg-Al-Zn series alloys with good combination of mechanical properties and reasonable corrosion resistance. However, whether the existence of second phase particles in the alloys exerts influence on the biocompatibility is still…
Gas phase spectral measurements for CdSe/ZnS core/shell nanocrystal quantum dots (QDs) before and after heating with both infrared (CO2) and visible lasers are reported. As-trapped QDs are spectrally similar to the same QDs in solution; however their photoluminescence (PL) intensities are very low, at least partly due…
We report an improved method for synthesizing gold nanorods (GNRs) by using 1,2,4-trihydroxybenzene as a reducing agent. The method allows a rich array of monodispersed GNRs with longitudinal surface plasmon resonance (LSPR) tunable from 698 to 913 nm to be generated. A large range of diameter distribution of GNRs fro…
Ethyl cellulose nanofibers were fabricated by electrospinning techniques using ethyl cellulose solution having concentrations of 150 g/l, using different volume ratios of a binary THF (tetrahydrofuran): DMAc (N,N dimethylacetamide) solvent system. The influence of the composition of the binary solvent system on the su…
Gold nanoparticles (GNPs) are emerging as promising novel agents for cancer therapy. However, the oxygen concentration in human tumors is highly heterogeneous, and there are many regions with very low levels of oxygen (hypoxia). A majority of solid tumors contain regions with oxygen pressure values of less than 0.7% i…
Here we report on the modification of fly ash (FA) with vinyltriethoxysilane (VTES) in order to enhance the dispersibility and avoid the agglomeration. FA was treated with nitric acid before the modification with VTES. The structure of fly ash particles before and after the modification was characterized by several so…
Two copper(II) complexes, Cu(tta)2(L 1 )2 (1), Cu(tta)2(L 2 ) (2) (where L 1 = 4-imidazolylbenzaldehyde, L 2 = (E)-3-(4-(1H-imidazol-1-yl)phenyl)-1-(4-methoxyphenyl)prop-2-en-1-one) have been synthesized from the reaction of Cu(tta)2 with L 1 and L 2 in the methanol medium, respectively. Their structures have been cha…
The evolution of the magnetic propagation vector of the magnetically ordered phases of TbMn2O5 has been studied as a function of magnetic field applied parallel to both [010] and [100] axes. The results have been used to construct (H, T) phase diagrams showing the regions of stability of the three distinct phases IC1,…
Abstract On a first attempt, the determination of 14 C and 36 Cl activity concentrations in basic operational waste (spent ion-exchange resins and perlite mixture), in decommissioning waste (construction concrete, sand, stainless steel and serpentinite) and irradiated graphite from the Ignalina NPP has been performed.…
Abstract Grand canonical Monte Carlo (MC) simulations are performed to analyse conformations of projection domains in a neurofilament (NF) brush composed of three types of tails (L, M, and H) at different concentrations of added salt. The NF is modelled as a rigid, uniformly charged cylinder (backbone), surrounded by…
In this work, a facile and catalyst-free method is developed to synthesize CdSe quantum wires (QWs) in organic solvent. Analysis on the intermediate products reveals that assembly of the initially-formed magic-sized CdSe clusters via oriented attachment plays a crucial role for generation of the well-defined QWs. Due…
Thermo-responsive materials, such as poly(vinylmethylether) (PVME), attract a common attention because of their unique physical properties resulted from metastable equilibrium between various types of interactions. In this work Monte Carlo (MC) and quantum-mechanical (QM) methods were used to study excluded volume and…
The RESET current of T-shaped phase change memory cells with 35 nm heating electrodes has been studied to understand the behavior of early cycling evolution. Results show that the RESET current has been significantly reduced after the early cycling evolution (1st RESET) operation. Compared the transmission electron mi…
Silver nanoparticles were embedded into cellulose fibres using N ‐methylmorpholine N ‐oxide as a direct cellulose solvent that was also the system from which silver nanoparticles were generated. The process of generation of silver nanoparticles in the N ‐methylmorpholine N ‐oxide enables the properties of cellulose fi…